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Hydraulic Rotary Table

Operation and Maintenance

Manual

Model: LH3751001 Serial Number: 200

COSCO – Energy Drilling N490

SO 2385245 PO 49012E001768

Disclaimer

The information in this publication is subject to change without notice.

Improvements in design, engineering, materials, production methods, etc. may necessitate changes to the product and may result in inconsistencies between the numeric values, figures, and descriptions in this publication and the physical equipment. Cameron reserves the right to make any and all changes deemed necessary.

Although the author and publisher have made every effort to ensure that the information in this publication was correct prior to release, the author and publisher do not assume and hereby disclaim any liability to any party for any loss, damage, or disruption caused by errors or omissions, whether such errors or omissions result from negligence, accident, or any other cause.

Copyright

© 2013 Cameron. All Rights Reserved.

This document contains material protected under International and Federal Copyright Laws and Treaties. Any unauthorized reprint or use of this material is prohibited.

No part of this document may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or by any information storage and retrieval system, without express written permission from Cameron.

Trademarks

The following are registered trademarks or trademarks of Cameron, and/or its subsidiaries and/or affiliates in the USA and other countries:

LEWCO™ OEM™

All other brand names, product names or trademarks belong to their respective holders.

Published By

Cameron Drilling Systems 6401 W. Sam Houston Parkway N Houston, TX 77041 Tel: 713-983-4700 Tel: 832-782-6500

Document No. DS-LH3751001-200-OMM

Revision Level

Revision Date Description of Change

00 10 Oct 2013 Initial Release

ii

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Table of Contents

1.0 Introduction .............................................................................................................. 1

1.1 Conventions ................................................................................................................................... 2 1.2 Contact Information ....................................................................................................................... 2 1.3 Warranty and Liability Information .................................................................................................. 2 1.4 Warnings, Responsibilities, and Procedures ..................................................................................... 3 1.5 General Safety Provisions ................................................................................................................ 3

2.0 Lifting and Handling .................................................................................................. 4

2.1 Lubrication ..................................................................................................................................... 5 2.2 Lock-Out / Tag-Out ......................................................................................................................... 5

3.0 Installation ................................................................................................................ 5

4.0 Utility Requirements .................................................................................................. 6

5.0 Lubrication ............................................................................................................... 8

5.1 Rotary Table Locking Mechanism Lubricant .................................................................................... 8 5.2 Gear Oil .......................................................................................................................................... 8 5.3 Hydraulic Oil ................................................................................................................................. 11

6.0 Maintenance........................................................................................................... 12

6.1 Maintenance Schedule ................................................................................................................. 12 6.2 Disassembly Procedure ................................................................................................................. 17 6.3 Assembly Procedure ..................................................................................................................... 20

7.0 Preservation and Storage ......................................................................................... 25

7.1 Location ....................................................................................................................................... 25 7.2 Cleaning ....................................................................................................................................... 25 7.3 Preservation .................................................................................................................................. 26 7.4 Storage ......................................................................................................................................... 26 7.5 Storage Maintenance ................................................................................................................... 26 7.6 Drive Motor .................................................................................................................................. 27

8.0 Torque Specifications ............................................................................................... 27

9.0 Rotary Table General Assembly and Parts List ............................................................. 28

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1.0 Introduction

This manual is published as a general guide for the operation and maintenance of the Cameron-supplied hydraulic Rotary Table. Because of the many factors that may contribute to the proper function or malfunction of this equipment, and not having complete knowledge of each factor or combination of factors on location, all facets of this subject cannot be detailed here. Therefore, the scope of this presentation is confined. When situations are encountered that are not fully encompassed by complete and understandable instructions, the situation should then be referred to personnel at Cameron.

When servicing is necessary, outside of the scope of routine maintenance, it can be most effectively performed if the unit or primary components being serviced are moved from the location of operation to an area of adequate space. Shelter should also be available and readily accessible.

Use sound mechanical practices and proper safety precautions at all times. Ensure personnel are adequately trained and have all updated documentation and/or drawings prior to performing any maintenance on this equipment.

WARNING

Use of inadequately trained or unprepared personnel could result in damage to equipment and serious injury or loss of life to personnel.

Cameron reserves the right to change, discontinue, or modify Rotary Table models at any time without notice and without incurring any obligation. Improvements in design, engineering, materials, production methods, etc. may necessitate changes in the Rotary Table and may result in inconsistencies between this publication and the physical equipment. Cameron reserves the right to make any and all changes deemed necessary.

NOTE

The drawings, diagrams, and photographs shown in this publication may be of similar equipment and may not appear exactly like the

equipment supplied.

WARNING

Carefully read and understand the operation and maintenance instructions. Failure to follow these instructions may result in equipment

damage and severe personal injury, including loss of life.

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1.1 Conventions

WARNING, CAUTION, and NOTE statements are used throughout this document to emphasize important and critical information relating to the handling, installation, operation, and maintenance of the equipment. These statements must be read any time they appear, in order to ensure personal safety and prevent equipment damage.

WARNING

Warnings indicate the potential for catastrophic damage to equipment or the environment and severe personal injury, including loss of life.

CAUTION

Cautions indicate the potential for damage to equipment or the environment.

NOTE

Notes provide additional information for reliable and efficient handling, installation, and operation of equipment.

1.2 Contact Information

Mailing Address: Cameron

Drilling Systems – LeTourneau Products

6401 West Sam Houston Parkway North

Houston, Texas, USA 77041

Phone Resources: 1-713-983-4700 (Main)

1-866-972-6742 (24 Hours Toll-Free)

1-832-782-6742 (24 Hour Local)

Web Resources: [email protected] (Part Sales Email)

[email protected] (Customer Service Email)

1.3 Warranty and Liability Information

Equipment warranties are specified in the purchase contract. Failure to follow operation and maintenance instructions or making aftermarket modifications may invalidate third party certifications and void the equipment warranty.

mailto:[email protected]

mailto:[email protected]

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1.4 Warnings, Responsibilities, and Procedures

1.4.1 Owner and Operator Responsibilities

It is the buyer’s and operator’s responsibility to obtain all accessories and safety devices required to operate this product safely and complete the application.

1.4.2 Accessories and Safety Equipment

This product is supplied in accordance with the buyer’s specifications and does not necessarily include all accessories and safety devices required to put this product into operation.

Safety devices, such as, but not limited to, rotating equipment guards, chains, cables, and wrenches are available from other suppliers.

WARNING

Never disable guards, safety systems, or switches to any equipment for any reason.

1.5 General Safety Provisions

Before conducting maintenance or repair operations, the following general safety precautions and provisions should be followed at all times. All provisions or all the possible eventualities of accidents during use cannot be listed here. Proper training, precaution, and good judgment should always be followed when operating, maintaining, or repairing equipment.

1. Wear proper eye protection, such as safety glasses or goggles.

2. Remove jewelry, such as rings, watches, necklaces, etc.

3. Personnel should always wear Personal Protective Equipment (PPE) such as steel toe footwear, hard hat, etc. Ensure PPE clothing is available if the task requires such protection.

4. ALWAYS wear and properly secure a safety harness when working at an elevated level.

5. Turn off and lock-out any electrical power prior to performing any task on electrical equipment.

6. Turn off and bleed down any hydraulic pressure prior to performing any task on any hydraulic equipment.

7. Avoid working with loose tools or components directly above any other people.

8. ALWAYS ensure heavy and/or overhead components being removed are installed or moved and lifted with the proper equipment and the equipment is properly secured.

9. ALWAYS use the appropriate tools. NEVER use a tool for a purpose it is not designed for. NEVER modify any tool.

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2.0 Lifting and Handling

1. This product and many of its components are heavy and/or difficult to handle.

WARNING

All bolted connections on the equipment must be properly secured. Failure to properly secure the equipment and all associated components can result in property damage and severe personal injury, including loss

of life.

2. Use proper lifting gear of adequate capacity to avoid severe personal injury and damage to equipment or the environment.

WARNING

Lifting capacity of all lifting gear must accommodate the actual weights given on the freight documents. The preliminary weights given in

project documents may not match the exact weight of the equipment upon delivery. Failure to use adequately rated lifting gear can result in damage to property and severe personal injury, including loss of life.

3. Ensure sufficient clearance to other items and structures prior to attempting to lift the equipment.

WARNING

Ensure sufficient clearance to other items and structures when lifting to avoid damage to property and severe personal injury, including loss of

life.

4. Provide adequate and safe supports for all equipment and parts.

5. Do not lift the Rotary Table by the table cover.

6. Use lifting holes provided in the bottom corners of the Rotary Table housing.

7. Ensure proper PPE is used when lifting or handling equipment.

WARNING

Always wear approved personal protective equipment, such as safety glasses, steel toe footwear, and hard hat when lifting or handling any

equipment to avoid severe personal injury or loss of life.

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2.1 Lubrication

1. Prior to shipment, all lubricant is drained from the equipment.

2. Lubricate the Rotary Table before commissioning as outlined in the Section 4.0.

2.2 Lock-Out / Tag-Out

1. Shut down or turn off all drilling equipment and disconnect the power source during maintenance, in order to prevent severe personal injury.

2. Employ sound mechanical practices when conducting maintenance repairs or adjustments on energized equipment.

3.0 Installation

Safety guards should be installed for all moving parts. Decking around the Rotary Table should provide safe and secure footing. Install the Rotary Table using the following instructions:

1. Ensure that the Rotary Table is set level.

CAUTION

Angular or tilted operation may be detrimental to the lubrication system and result in serious damage to the Rotary Table and associated

drilling equipment. Lubricant leakage indicates a serious problem.

2. Ensure that the Rotary Table housing is properly supported.

2.1. The skid or foundation must be sufficiently sized and designed to maintain the equipment free of strain.

2.2. The housing must be adequately secured to the foundation.

2.3. Use locking devices and high-strength fasteners.

3. Ensure the Rotary Table is properly aligned to the drive equipment.

4. Ensure there is adequate clearance around the Rotary Table housing and support frame to prevent drilling mud buildup.

5. Provide ample clearance between the bottom of the Rotary Table and the top of the bell nipple to prevent overflow of drilling mud from reaching or building up on the underside of the Rotary Table.

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4.0 Utility Requirements

Hydraulic System

Maximum Allowed Working Pressure 3,000 psi

Maximum Required Flow 120 GPM

Maximum Pressure at the Flushing Line 95 psi

HPU Type Closed Center

Fluid Cleanliness Level ISO 4406: 18/16/13 NAS 1638: Class 7 or Better

Gear Lubrication Specifications

Reservoir Capacity 17 US Gallons (64.35 L)

Operating Temperatures ≥ +20°F (-7°C)

Gear Lubrication Oil AGMA No. 6 EP or ASTM/ISO-VG Grade 320 Noncorrosive, Antifoaming Gear Lube

Gear Lubrication Oil Viscosity 1533-1881 SSU at +100°F (+38°C)

Operating Temperatures -20°F to +60°F (-29°C to +16°C)

Gear Lubrication Oil AGMA No. 2 EP or ASTM/ISO-VG Grade 68 Noncorrosive, Antifoaming Gear Lube

Gear Lubrication Oil Viscosity 318-389 SSU at +100°F (+38°C)

Hydraulic Oil Specifications

Recommended Hydraulic Fluid

Recommended Oil Type Petroleum Based Hydraulic Oil

Oil Temperature Limits Normal operating temperature should be less than 122° F (50°C)

Recommended Viscosity in Motor Case at Operating Temperature 40 – 150 cSt / 187 – 720 SSU

Minimum Viscosity Limits at Operating Temperature in Motor Case

20 cSt / 98 SSU

Operating Temperatures: +77°F to +122°F (+25°C to +50°C)

Hydraulic Oil

Premium grade hydraulic oil with anti-wear and anti-rust additives.

The oil shall have FGZ fail stage minimum 11 as described in IP 334 (DIN 51354).

ISO Viscosity Grade 68

Viscosity 8.9 cSt @ +212°F (+100°C)

Viscosity Index 105

Pour Point -27.4°F (-33°C)

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Hydraulic Oil Specifications (Continued)


Hydraulic Oil




Viscosity 6.8 cSt at +212°F (+100°C)

Viscosity Index 105


Operating Temperatures: +28°F to +86°F (-2°C to +30°C)

Hydraulic Oil





Viscosity Index 105


Table Lock Lubrication Requirements

Locking Mechanism Lubricant NLGI Grade 2 Extreme Pressure Lithium Base Grease

Electrical Requirements for Controls (Solenoids/Measuring Instruments)

Voltage 24 VDC

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5.0 Lubrication

Proper lubrication is essential to trouble-free performance of the Rotary Table.

WARNING

Lubricate the Rotary Table before starting operation. All lubricant is drained from the product before it is shipped. Operating the Rotary Table without lubricant will cause serious damage to the table and

creates the potential for severe personal injury.

5.1 Rotary Table Locking Mechanism Lubricant

The Rotary Table locks, which are lubricated with grease, are accessible through slots on the right and left side of the top cover near the pinion end. Each lock has two grease fittings: one for the lock pivot and one for the lock actuator.

Apply one shot (approx. 1/4 cu. in.) of NLGI Grade 2 Extreme Pressure Lithium Base Grease to each fitting. See the Section 5.1 for further information.

5.2 Gear Oil

All rotating components (main bearing assembly, gears, and pinion bearings) are lubricated by a single oil bath reservoir. When the reservoir is properly filled with oil, the lower part of the pinion is submerged and carries the oil up to the gear as it rotates. A portion of the excess oil is deposited at the top of the main bearing, and this oil drains down through the main bearing assembly and returns to the reservoir.

Another portion of the excess oil is gathered by a collector on the upper portion of the pinion housing. This oil is directed into the pinion housing and lubricates the pinion bearings. Oil overflows from the pinion housing back to the reservoir.

Table 1: Gear Oil Specifications

Operating Temperature Lubricant Viscosity

≥ +20°F (-7°C) AGMA No. 6 EP or ASTM/ISO-VG

Grade 320 Noncorrosive, Antifoaming Gear Lube

1533-1881 SSU at 100°F (38°C)

-20°F to +60°F (-29°C to +16°C)

AGMA No. 2 EP or ASTM/ISO-VG Grade 68

Noncorrosive, Antifoaming Gear Lube

318-389 SSU at 100°F (38°C)

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5.2.1 Gear Oil Reservoir Capacity

Model LH375: 17 Gallons (64.35 L)

5.2.2 Draining the Gear Oil Reservoir

1. Remove the 2" drain plugs on the front face of the Rotary Table and remove the 1" magnetic drain plug from the front face of the pinion cartridge (Figure 1). Both must be open to completely drain the reservoir.

Figure 1: Reservoir Drain Plugs and Magnetic Plug

2. Carefully inspect the plugs for contamination from mud, water, or metal particles.

3. If the oil is contaminated, refer to the Section 4.2.4.

4. Clean the magnet on the plug, and replace the after the oil is drained.

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5.2.3 Filling the Gear Oil Reservoir

1. Remove the reservoir fill opening cap on top of the Rotary Table near the pinion end (Figure 2).

Figure 2: Gear Oil Reservoir

2. Fill the reservoir through the fill opening, using high-temperature, extreme pressure gear oil as specified in Table 1.

3. When the volume specified in the Section 4.2.1 is used, the oil level should be within the scribed area on the dipstick.

4. Operate the Rotary Table at a medium speed (10 rpm) for five minutes.

5. Stop and check the oil level again.

6. Adjust the oil level as needed to remain within the scribed area on the dipstick.

5.2.4 Contaminated Gear Oil

If the gear oil is contaminated, the Rotary Table should be immediately removed from service. If the Rotary Table cannot be released from service long enough to properly clean the reservoir, use the following procedure.

1. Drain the contaminated gear oil from the Rotary Table as soon as possible.

2. Fill the reservoir to the normal operating level with 20W or 30W mineral oil.

3. Operate the rotary under no load, at 1-15 rpm for 2 to 3 minutes.

4. Drain the reservoir.

5. Refill the reservoir with the clean gear oil per the specifications in Table 1 and proceed.

6. As soon as possible, remove the Rotary Table from service, disassemble, and clean the inside of the oil sump and pinion capsule.

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5.3 Hydraulic Oil

Use premium grade hydraulic oil with anti-wear and anti-rust additives.

Table 2: Hydraulic Oil Specifications

Hydraulic Oil Specifications

Recommended Hydraulic Fluid

Recommended Oil Type Petroleum Based Hydraulic Oil

Oil Temperature Limits Normal operating temperature should be less than 122° F (50°C)

Recommended Viscosity in Motor Case at Operating Temperature 40 – 150 cSt / 187 – 720 SSU

Minimum Viscosity Limits at Operating Temperature in Motor Case 20 cSt / 98 SSU


Hydraulic Oil




Viscosity 8.9 cSt @ +212°F (+100°C)

Viscosity Index 105



Hydraulic Oil





Viscosity Index 105


Operating Temperatures: +28°F to +86°F (-2°C to +30°C)

Hydraulic Oil





Viscosity Index 105


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6.0 Maintenance

A careful preventive maintenance program will help reduce downtime and lower the cost of repairs. The following represents a minimum program for the maintenance of the Rotary Table assembly. Careful attention by the owner or operator may indicate necessary adjustments or additions to the recommended maintenance schedule.

6.1 Maintenance Schedule

6.1.1 Daily

1. Check the gear oil level and adjust as necessary.

2. If there is evidence of contamination, see the instructions in Section 4.2.4.

CAUTION

Do not ignore contaminated lubricant. Severe and costly damage can occur to the gears and bearings if contaminated lubricant is used.

3. Lubricate the Rotary Table locking mechanisms.

Figure 3: Locking Mechanisms

4. Lubricate the adapter bushing, master bushing, and bushing locks with pipe-joint compound or equivalent.

5. Check the unit for dust, dirt, and debris. Clean as necessary.

6. Check the exterior for worn, damaged, loose, and/or missing parts.

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6.1.2 Weekly

1. Visually check the top and bottom of the Rotary Table for signs of oil leaks. If a leak is found, inspect the pinion shaft seals and replace if damaged.

Figure 4: Pinion Shaft Seal

6.1.3 Monthly

2. Drain a small amount of oil from the reservoir and check for contamination. If there is evidence of contamination, follow the instructions in Section 4.2.4.

3. Do not ignore contaminated lubricant. Severe and costly damage can occur to the gears and bearings.

CAUTION

Do not ignore contaminated lubricant. Severe and costly damage can occur to the gears and bearings if contaminated lubricant is used.

6.1.4 Semiannually

1. Under normal operating conditions, gear oil should be changed every 2500 operating hours or every six months, whichever comes first.

2. Check and inspect all fasteners for proper tightness.

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3. Clean the magnetic drain plug.

Figure 5: Magnetic Drain Plug

NOTE

The gear oil should be drained while it is at operating temperature.

6.1.5 Annually

1. Remove the Rotary Table from the housing, and inspect the interior of the reservoir for contamination and debris. Clean as necessary.

Figure 6: Reservoir Location

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Figure 7: Cutaway Sideview of Reservoir Location

2. Inspect the gears for proper operation and wear pattern.

3. Check the clearance in the Rotary Table bearing assembly and adjust as necessary.

4. Check the pinion bearings for excessive clearance and replace as necessary.

Figure 8: Pinion Bearing

5. Check the backlash in the gear set and adjust as necessary.

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Table 3: Maintenance Schedule Summary

Maintenance Task Daily Weekly Monthly Semi-

annually Annually

Check the gear oil level and adjust as necessary.

Check the lubricant for contamination. If there is evidence of contamination, see the Contaminated Gear Oil instructions in the Lubrication section.

Lubricate the Rotary Table locking mechanisms.

Visually check the top and bottom of the Rotary Table for signs of oil leaks. If a leak is found, inspect the pinion shaft seals and replace if damaged.

Lubricate the adapter bushing, master bushing, and bushing locks with pipe-joint compound or equivalent.

Check the unit for dust, dirt, and debris. Clean as necessary.

Visually inspect all the hydraulic hoses and connections for any sign of oil leaks.

Change the oil.

Check all fasteners for proper tightness.

Clean the magnetic pipe plug.

Remove the Rotary Table from the housing, and inspect the interior of the reservoir for contamination and debris. Clean as necessary.

Inspect the gears for proper operation and wear pattern.

Check the clearance in the Rotary Table bearing assembly and adjust as necessary.

Check the pinion bearings for excessive clearance and replace as necessary.

Check the backlash in the gear set and adjust as necessary.

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6.1.6 Hydraulic Filter

An ATEX Zone-1 Certified differential pressure switch is furnished with the filters to provide a signal when the filters are clogged and require service.

6.2 Disassembly Procedure

6.2.1 General Instructions

1. Remove any adapter bushings from the table bore.

2. Place the Rotary Table on solid supports that allow access to the underside.

3. Follow support instructions given in Section 1.4.

4. Preserve and protect any parts removed from the Rotary Table for future use.

5. Refer to Section 8.0 and the Parts Catalog for component identification.

6.2.2 Remove the Rotary Table from Housing

1. From the top of the Rotary Table:

1.1. Remove the four 1" socket head screws holding the top cover plate assembly to the rest of the table assembly.

1.2. Remove the top cover plate assembly.

2. From the bottom of the Rotary Table:

2.1. Remove the twenty 3/4" bolts holding the lower table retaining ring and remove the lower table retaining ring.

2.2. Remove the ten 1" socket head screws holding the lower table bearing retainer.

2.3. Screw two 1" NC-thread lifting eyes into the top of the Rotary Table.

2.4. Lift the table straight up. There may be some resistance as the Rotary Table is a snug fit into the table-retaining ring and has an O-ring seal.

2.5. After the Rotary Table has cleared the table housing, carefully set it aside for further disassembly as required.

2.6. Remove the Rotary Table shims from the shelf on which the main bearing sits. LH375 shims are a stack of circular rings with an inside diameter of approximately 37.5". Retain these shims, because they will be needed during reassembly of the Rotary Table.

6.2.3 Remove the Bearing Race and Gear from the Rotary Table

1. Place the Rotary Table right side up on supports large enough to bring the table to waist level.

2. With the ring gear on the underside of the table, gently heat the ring gear with a rosebud torch and a reducing flame.

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3. Keep the torch as far from the gear as practical and keep the torch moving at all times. The gear should fall from the table when free.

CAUTION

Be sure that the torch moves constantly over the entire surface of the gear. Do not overheat. Any change in color (yellow or blue) has

permanently damaged the gear.

4. Use 4 to 6 thin wedges between the table and gear faces to encourage movement.

5. The bearing race may be removed by gently heating it in the same manner.

6.2.4 Remove the Main Bearing from the Housing

1. With the Rotary Table removed from the table housing, lift out the balls and ball retainer of the main bearing.

2. Remove the six 3/4" socket head cap screws and main bearing retainers that hold the main bearing race in the table housing.

3. Pull upward on the lower table bearing retainer to remove the remainder of the bearing assembly and the lower table bearing retainer.

4. After the bearing assembly has cleared the housing, carefully set it aside. Handle carefully, because the bearing and retainer parts are not attached and will easily slip apart.

5. Remove the main bearing shim pack from the shelf in the table housing that supports the main bearing. Retain these shims, because they will be needed during reassembly of the Rotary Table.

6.2.5 Remove the Table Lock Assemblies

1. Unscrew the 2" hex head plugs from the right and left side of Rotary Table housing.

2. Screw a 1-8UNC bolt into the table lock pin beneath the hex head plug, and pull the pin.

3. Remove the table lock assembly from the top of the table housing.

4. Repeat Steps 2 and 3 for the remaining table lock assembly.

6.2.6 Remove the Pinion Cartridge

1. Remove the fill cap and the fill nipple.

2. Remove the eight 3/4" hex bolts holding the pinion cartridge in the Rotary Table housing.

3. Screw four 3/4" jackscrews into the jackscrew holes in the pinion cartridge flange.

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4. Remove the pinion cartridge from the Rotary Table housing.

5. Remove and retain the shims that are between the cartridge flange and the Rotary Table housing, because they will be needed during the reassembly of the table.

6.2.7 Disassemble the Pinion Cartridge

CAUTION

Disassembly of the pinion cartridge requires the application of low heat. Make sure the torch moves constantly over the entire surface of the

gear. Do not overheat. Any change in color (yellow or blue) has permanently damaged the pinion.

1. Remove any sprocket or hub that is installed on the pinion shaft.

2. Remove the pinion shaft key.

3. Retain the shaft to prevent rotation and unscrew the pinion lock nut using a spanner wrench.

4. Remove the eight 3/4" bolts holding the pinion retaining flange to the cartridge and remove the retaining flange.

5. Press the shaft out of the pinion cartridge toward the pinion end.

NOTE

After 3-1/2" of movement, the bearing on the pinion end and shaft end will disengage and the shaft will move freely.

After 5-1/4" of movement, the shaft end bearing will disengage and the shaft will move freely.

6. Remove the pinion shaft from the cartridge.

7. Remove the four 5/8" bolts and the two inner-end bearing retainers.

8. Press the inner and outer bearings from the pinion cartridge.

9. Press the shaft out of the pinion gear and the inner race of the pinion end bearing.

NOTE

Application of low heat is required to press the shaft out of the pinion gear and the inner race of the pinion end bearing.

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6.3 Assembly Procedure

6.3.1 General Instructions

1. All parts must be clean and free of burrs or paint coating on contact faces.

2. Follow part and assembly support instruction given in the warning section.

3. Refer to Section 8.0 and the Parts Catalog for component identification.

4. Before assembly, lubricate bolts with 30W oil, or equivalent.

5. Torque bolts to the values indicated in Section 7.0, unless stated otherwise on the assembly drawing in the Parts Catalog.

6.3.2 Assemble the Pinion Cartridge

1. Place the pinion shaft on a firm support that will prevent both lateral and longitudinal motion of the shaft.

2. Gently heat the pinion gear to 300°F (149°C) above room temperature.

CAUTION

Do not heat the bearing in excess of 250°F (121°C).

Use a tempil stick to monitor heat. If a heating torch is used, avoid applying heat directly on rollers and cage. Any change in color (yellow

or blue) indicates permanent damage to the components.

3. Place the pinion gear on the shaft, large diameter first, until the small diameter face of the gear is flush with the end of the pinion shaft.

4. Allow the gear to cool slowly at ambient temperature.

CAUTION

Do not quench with water.

5. After the pinion assembly is cool, position the pinion shaft assembly with the pinion gear face down. With the shaft sticking up, warm the pinion end (straight roller) bearing inner race, and place it on the shaft behind and firmly against the gear.

6. Hold in place until cool.

7. Press the outer race and roller assembly of the pinion end (straight roller) bearing into the pinion end of the pinion cartridge.

8. Install the two inner-end bearing retainers. Torque the four 5/8" x 1" bolts to 158 ft-lbs (lubed). Safety-wire the bolts.

9. Press the outer pinion (spherical roller) bearing into the outer end of the pinion cartridge.

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10. Install the pinion retaining flange, without the oil seal, onto the pinion cartridge subassembly.

11. Position the pinion cartridge subassembly over the pinion shaft assembly (see Figure 1).

12. Gently heat the inner race on the outer pinion (spherical roller) pinion bearing. Do not overheat the bearing race.

CAUTION




13. Lower the pinion cartridge onto the pinion shaft assembly until the outer pinion (spherical roller) bearing shoulder is firmly against the shoulder of the pinion shaft assembly.

14. Hold the bearing against the shoulder until it is cool.

15. After the shaft assembly has cooled, remove the pinion retainer flange, and press the pinion oil seal into the pinion retainer flange. Be sure that the oil seal lip is facing inward toward the bearing when installed.

16. Install the pinion flange retainer gasket, and bolt the pinion retainer flange to the pinion capsule with eight 3/4" x 1-1/2" bolts, and torque to 281 ft-lbs (lubed).

17. Safety-wire the bolts.

18. If the pinion retainer flange has a cutout, be sure the cutout is aligned with the drain plug in the pinion capsule.

19. Screw the pinion lock nut on the pinion shaft and tighten to 150 ft-lbs (lubed).

20. Align one of the slots in the nut with the keyway in the shaft and insert the key.

6.3.3 Install the Pinion Cartridge in the Rotary Housing

1. The face of the pinion gear is stamped with the part number, the mounting distance, and the backlash. Note and record the mounting distance and the backlash for later use.

2. Make a trial installation of the assembled pinion cartridge into the Rotary Table housing without shims or O-rings installed.

3. Ensure that the dowel in the pinion cartridge aligns with the hole in the Rotary Table housing.

4. Install at least four 3/4" bolts equally spaced on the pinion capsule. Tighten firmly.

5. With a depth micrometer, measure the distance from the inside diameter of the Rotary Table housing, adjacent to the pinion gear, to the face of the pinion gear Figure 9 below. The largest inside diameter is 50".

6. Add the depth micrometer measured distance to 25".

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7. Subtract the depth micrometer measured distance from the mounting distance stamped on the pinion.

8. The result is the required thickness of the shim pack between the pinion cartridge and the rotary housing. See Figure 10 for a sample calculation.

Figure 9: Depth Micrometer Measurement

9. Place the required shims on the inside of the pinion cartridge.

10. Repeat the above procedure to confirm the correct mounting distance has been obtained. If the original calculation and shim application was correct, the second calculation should result in a shim thickness of zero.

11. Torque the cartridge mounting bolts to 281 ft-lbs (lubed).

12. Safety-wire the bolts.

Figure 10: Sample Shim Thickness Calculation for LH375 Rotary Table

Shim Thickness = M – (D + 25)

M = Mounting Distance Stamped on Pinion

D = Distance Measured by Depth Micrometer

Example Values:

M = 25.625

D = 0.485"

Shim Thickness = 25.625 – (0.485 + 25) = 0.140"

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6.3.4 Install the Upper Main Bearing Race and Gear on the Rotary Table

1. Place the table top side down, on solid supports to allow access to the top side of the table.

2. Gently heat the upper bearing race to 150°F to 200°F (66°C to 93°C).

CAUTION




3. Lower the race into place on the table. Be sure that it is firmly seated on the table. Hold the race to assure that it stays firmly seated on the table as it cools.

4. Heat the ring gear to 150°F to 200°F (66°C to 93°C).

5. Lower the ring gear onto the table until it rests firmly in place, and ensure that the bolt holes in the gear align with the holes in the table.

6.3.5 Set the Main Bearing Internal Clearance

1. After the upper bearing race, ring gear and table have cooled, place the balls and ball spacer on the upper bearing race.

2. Add the middle bearing race, the lower ball spacer and balls, the lower bearing race and the lower table bearing retainer.

3. Install the ten 1" x 2-3/4" socket head screws and tighten in a crisscross order to no more than 100 to 150 ft-lbs (lubed). Do not warp the lower table bearing retainer.

CAUTION

Be careful not to warp the lower table bearing retainer.

4. Measure the clearance between the bottom of the table and the lower table bearing retainer using a feeler gauge in at least six evenly spaced places around the table circumference.

5. These measurements must not vary more than 0.005". If the variation is excessive, remove the parts and reassemble, taking care to ensure that all parts are properly seated and the lower table bearing retainer is moved down evenly on the table.

6. Add 0.007" to the feeler gauge measurement. This is the Rotary Table shim pack thickness. The shim pack will compress when tightened to give an internal bearing clearance of 0.001" to 0.003". This should be checked after the bolts have been tightened to the proper torque value.

7. Remove the lower table bearing retainer, lower race, lower ball spacer and balls, the middle race, and the upper ball spacer and balls from the table.

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6.3.6 Set the Gear and Pinion Backlash

1. Set the Rotary Table shims aside and retain for later use.

2. Install the lower bearing retainer, the lower bearing race, the lower ball spacer, and balls in the Rotary Table housing.

3. Place 0.140" shims, from main bearing shim pack, on the main bearing support in the Rotary Table housing.

4. Install the middle bearing race and the upper ball spacer and balls in the Rotary Table housing.

5. Set the Rotary Table, with the upper bearing race and ring gear installed, into the Rotary Table housing.

6. Rotate the table to assure that the bearing is fully seated and that the gears are meshed.

7. Gently rock the pinion shaft back and forth. Do not move the table.

8. The rocking movement is determined by the backlash in the gear set. When the movement is measured at a distance of 7-5/8" from the center of the pinion shaft, it should be equal to the backlash stamped on the pinion gear. If the backlash is not correct, shims must be added or removed from the main bearing shim pack on the main bearing support. Adding a 0.001" shim will add approximately 0.001" to the backlash.

9. After the backlash is properly set, remove the table from the housing.

10. Install the six main bearing retainer blocks and 3/4" x 1-1/2" socket head screws and torque to 281 ft-lbs (lubed).

6.3.7 Install the Table

1. With the main bearing and main bearing retainer in the housing, install the Rotary Table shim pack in the lower table bearing retainer.

2. Make sure that the bolt holes are in alignment.

3. Install the table O-ring seal on the skirt of the Rotary Table and grease thoroughly.

4. Lower the table into the bearing assembly and make sure that the holes in the Rotary Table skirt are aligned with the holes in the lower table bearing retainer.

5. Install the ten 1" x 2-3/4" socket head screws in the lower bearing retainer.

6. Torque the socket head screws to 679 ft-lbs (lubed).

7. Install the twenty 3/4" x 1-3/4" drill head bolts in the lower table retaining ring.

8. Torque the drill head bolts to 281 ft-lbs (lubed). Safety-wire the bolts.

9. Check the gear backlash again.

6.3.8 Install the Table Lock Assemblies

1. From the top of the housing, place the left and right locks into position.

2. Insert the table lock and screw pin into the housing and the table lock assemblies from the left and right sides of the rotary housing.

3. Install the 2" hex head plug from the right and left sides of the Rotary Table housing

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6.3.9 Install the Top Cover Assembly

1. Set the top cover plate assembly on the base with the brand and size on the pinion shaft end of the base.

2. From the top of the Rotary Table, align the cover with the table and the four mounting bolt holes.

3. Install the four 1" x 2" socket head screws (Grade 8) holding the top cover plate assembly to the Rotary Table.

4. Torque the socket head screws to the recommended torque as indicated in Section 7.0.

5. Check the operation of the right and left Rotary Table locks.

7.0 Preservation and Storage

The following recommendations can be used for multiple types of Rotary Tables and Rotary Table drives. The customer must apply any recommendations applicable to their specific application.

7.1 Location

The unitized Rotary Table should be supported in a manner similar to the working support. The temporary supports should be high enough to allow free circulation of air below the skid to prevent condensation and accumulation of water. An indoor location with adequate drainage that prevents standing water is preferred.

7.2 Cleaning

Dirt, grease and other accumulated material should be removed from the unitized Rotary Table before storage. Power cleaning (steam or pressurized water) is preferred.

For electric motor drive versions, the drive reduction box/chain case and the rotary lubrication systems should be flushed and drained. Give special attention to the removal of drilling fluid accumulations in the rotary sump. If water has entered the sump during the washing process, this water must be removed completely.

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7.3 Preservation

1. Remove any loose paint. Clean rusted surfaces to bright metal and repaint.

2. Repaint any areas where the paint is thin.

3. Circulating preservative oil (Shell VSI 32 or equivalent) through the lubrication system is recommended. If this is not available, clean oil should be circulated through the system to coat all parts with an oil film.

4. After circulating, the oil sump should be drained.

5. Grease lubricated parts should be thoroughly greased (filled) with the usual operating grease.

6. Cover all unpainted exposed parts with dry film type rust preventative. Do not coat the braking surface of the inertia brake.

CAUTION

Do not coat the surface of the inertia brake with rust preventative. If the braking surface is covered by a film of rust preventative compound, it will compromise the capability of the braking system upon resuming

operation.

7. If a control panel is included, cover the panel with a weather tight cover over all openings above the base and bind tightly in place. Desiccant packages should be installed in all electric enclosures to absorb internal moisture in order to prevent the buildup of condensation and subsequent corrosion of internal components.

8. Hydraulic hoses and all piping ports must be closed with the proper size O-ring plug or cap to prevent contamination and oil leakage from the components that are disconnected.

9. Hoses and wiring should be covered and not stored in direct sunlight.

7.4 Storage

Condensation in the rotary and chain guard is a main concern during storage. Plug all breather openings and seal all hatches. Operating a small heater (75-100 W) in each cavity is the preferred preservation method. If heaters are not available use the following procedure.

1. Plug all breather openings and seal all hatches.

2. Remove the sump drain plugs.

3. Tilt the unit to assure the maximum, long-term drainage of any accumulated condensation.

4. Cover the drains with wire mesh to prevent the entrance of insects.

7.5 Storage Maintenance

1. Check the unit monthly to determine the condition of the preservation.

2. Repair any areas showing signs of preservative breakdown or damage.

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7.6 Drive Motor

If applicable, follow the electric or hydraulic motor manufacturer’s specifications for storage and preservation. This information can be found in the Accessory Manuals.

8.0 Torque Specifications

Steel Fastener Torque Specifications (Lubed)

Fastener Size

(Fraction/ Decimal)

Thread Series

SAE Grade 5 Fasteners SAE Grade 8 Fasteners ASTM A193 Grade B7

Fasteners

USA Units (ft-lb)

Metric Units (N-m)

USA Units (ft-lb)

Metric Units (ft-lb)

USA Units (ft-lb)

Metric Units (N-m)

1/4 20 UNC 6 9 9 12 7 10

0.250 28 UNF 7 10 10 14 8 11

5/16 18 UNC 13 18 18 25 15 20

0.3125 24 UNF 14 20 20 28 16 22

3/8 16 UNC 23 31 33 44 26 36

0.375 24 UNF 26 35 37 50 30 40

7/16 14 UNC 37 50 52 71 42 57

0.4375 20 UNF 41 56 58 79 47 64

1/2 13 UNC 56 76 80 108 64 87

0.500 20 UNF 63 86 90 122 72 98

9/16 12 UNC 81 110 115 156 93 126

0.5625 18 UNF 91 123 128 174 103 140

5/8 11 UNC 112 152 158 215 128 173

0.625 18 UNF 127 172 179 243 145 196

3/4 10 UNC 199 270 281 381 227 308

0.750 16 UNF 222 301 314 425 253 343

7/8 9 UNC 321 435 453 614 366 496

0.875 14 UNF 354 480 500 678 404 547

1 8 UNC 481 652 679 921 549 744

1.000 14 UNF 539 731 762 1034 616 835

1-1/8 7 UNC 600 813 963 1305 778 1054

1.125 8 UN 621 842 997 1352 805 1092

12 UNF 673 912 1079 1463 872 1182

1-1/4 7 UNC 846 1147 1358 1842 1097 1487

1.250 8 UN 873 1184 1401 1900 1132 1534

12 UNF 937 1270 1504 2039 1215 1647

1-3/8 6 UNC 1109 1504 1781 2414 1438 1950

1.375 8 UN 1185 1607 1902 2578 1536 2083

— 12 UNF 1263 1712 2027 2748 1637 2220

1-1/2 6 UNC 1473 1997 2363 3204 1909 2588

1.500 8 UN 1563 2120 2509 3402 2027 2748

— 12 UNF 1657 2246 2659 3605 2148 2912

1-3/4 — — — — — — — —

1.750 8 UN — — — — 3300 4474

2 — — — — — —

2.000 8 UN — — — — 5018 6804

Bolt And Cap Screw Markings On Head

B7 Studs

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9.0 Rotary Table General Assembly and Parts List

NOTE

The component descriptions and general assembly diagrams featured in this section are intended to highlight the main components that are available for all rotary tables and should be used for reference only.

Refer to the serial number-specific Parts Catalog for detailed assembly and subassembly drawings and parts lists for a given rotary table.

The following components are called out by item number on the general assembly reference diagram in Figure 11.

Table 4: Parts List

Item Component Item Component

0001 COVER-ROTARY TABLE, L-375 0016 SHIM SET-MAIN BEARING, L-375

0002 ROTARY TABLE, MACHINED L375 0017 SHIM SET-LWR BRG RETAINR,L-375

0003 SET-GEAR, L-375 0018 SHIM SET-PINION CARTRIDGE,L375

0004 BEARING-ROTARY TABLE, L-375 0020 O-RING 2-465 BUNA 70

0005 HOUSING-ROTARY TABLE, MACH 0021 O-RING .275 40.75 70D BUN

0006 RETAINER-LOWER TABLE, L-375 0022 GASKET-BEARING RETAINER, L-375

0007 RETAINER-LOWER BEARING, L-375 0024 BOLT HX .750 1.750 NC G8 DH

0009 BEARING-CYLINDRICAL ROLLER 0026 WASHER LOCK SPR.750 1.27 .198

0010 BEARING-SPHERICAL ROLLER 0027 CSCR SK 1.00 NC 2.75

0011 FLANGE-BEARING RETAINER 0033 PIPE PLG 1.000 CS SQ MAGNETIC

0012 NUT-PINION SHAFT, L-375 0035 RETAINER-INNER PINION BRG,L375

0013 SHAFT-PINION, L-375 HYD DRIVE 0036 BOLT HX .625 1.50 NC G8 DR

0014 CARTRIDGE-PINION, MACH L-375 0044 RETAINER-INNER PINION BRG,L375

0015 SEAL-OIL 0045 BOLT HX .625 1.50 NC G8 DR

Figure 11: Section View

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Figure 12: Table Lock Assembly – Top View

Figure 13: Pinion Cartridge Assembly

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Figure 14: Section End View

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PO Box 1212Houston, TX 77251-1212Tel 713.983.2211Fax 713.983.2611

[email protected]@c-a-m.com

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