main n nose gear b.737
DESCRIPTION
boeing 737TRANSCRIPT
MAIN GEAR and NOSE GEAR OVERHAUL ASSY / DISASSY
BOEING 737 SERIES
PREPARED BY : SUKAMTO.M01
FOR TRAINING PURPOSE ONLY
PT MULADATU
NOTICEThis handout is a part of the training material to get trainees familiar with the B737 landing gear system.
The imformation contained herein is for training purpose only and may not be copid, disclosed to third parties or
used for any purpose, without the express writen from……..
The values of pressure, temperature, speed, power, weight etc., are for the illustrative meaning only and are not
necessarily representative of the correct value.
It will not be reviced and does not amend or supersede applicable service bulletins, overhaul manuals and writen
instruction.
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MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
PT MULADATU
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MAIN AND NOSE LANDING GEAR
TABLE OF CONTENT
No Subject Page
01 Introduction- History
04
02 Main Gear Build-Up and Nose Gear Build-Up- General, Description, Interchangeability and Life-Limited Part
07,60
03 Main Gear Assembly and Nose Gear Assembly- Description, Operation and Leading Particulars
16,68
04 Main Gear Shock Strut and Nose Gear Shock Strut- Description, Operation, Seal Replacement and Sleeve Installation
18,70
05 Corrosion Preventive Compound- Article on corrosion, Application of MIL-H-11796 and BMS 3-27- Tee bolt, Universal and Lower Drag Strut Installation
26
06 Grease Application
39
07 Main Gear Side Strut
46
08 Main Gear Uplock Assembly
56
09 Main Gear and Nose Gear Minor Components
59,74
10 Nose Gear Locklink Assembly
61
11 Main Gear and Nose Gear Oerhaul Process 60,77
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04
MAIN AND NOSE LANDING GEAR
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05
MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
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06
MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
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SAFETY PRECAUTION
OBEY ALL WARNINGS, CAUTIONS AND NOTES MENTIONED IN
APPLICABLE DOCUMENT(S).
MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
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MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
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MAIN AND NOSE LANDING GEAR
HYDRAULIC INSTALLATIONHARNESS INSTALLATION
MAIN GEAR BUILD-UP
CMM.32-16-11NO ASSIGNED PART NUMBER
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MAIN GEAR BUILD-UP
CMM.32-16-11NO ASSIGNED PART NUMBER
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MAIN AND NOSE LANDING GEAR
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CMM.32-16-01 CMM.32-11-11
CMM.32-16-31CMM.32-17-11 CMM.32-17-01
MINOR COMPONENT
Aft Trunion Nut Assembly
Actuator Beam Assembly
Support Link Assembly
Bearing Assembly fwd trunion
Bolt Assembly Lower Side StrutShaft Up-Lock Support
Bolt , Fwd Trunion Bearing
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Interchangeability and Life-limited Parts ( example )
-Service letter has been released to provide landing gear structural component interchangeability Imformation- Drawing 65C73761 outlines interchangeability which are FAA approved.- As drawing 65C73761 is reviced to add new part numbers, service letter will be reviced also.
09
MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
PT MULADATU
Interchangeability and Life-limited Parts ( example )
- Service letter has been released to provide landing gear structural component interchangeability Imformation- Drawing 65C73761 outlines interchangeability which are FAA approved.- As drawing 65C73761 is reviced to add new part numbers, service letter will be reviced also.
10
MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
PT MULADATU
Interchangeability and Life-limited Parts ( example )
- This drawing includes component life limit data
- Serialization of life limited components is needed to track life limited parts
11
MAIN AND NOSE LANDING GEAR
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PT MULADATU
Interchangeability and Life-limited Parts ( example )
12
MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
PT MULADATU
How to Use Interchangeability list
- This drawing includes component life limit data.
- Serialization of life limited components is needed to track life limited parts.
13
MAIN AND NOSE LANDING GEAR
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How to Use Interchangeability list.
A. All part numbers listed within a block are fully interchangeable witheach other for listed gross weights. Only part/assembly numbers atthe interchangeable level are shown in this document. See CMM/OHM, D6-17370 for lower level components. If only one part is shown for an item, there is no alternate part available.
B. Some blocks are separated into groups of numbers is differentairplane gross weight limitations. All parts within the block may be interchanged provided the maximum gross weight limitation of each part is not exceeded. C. All part numbers listed within a block which is separated by a solidline from the previous or following block, are not generally interchangeable with part numbers listed in the block. Refer to flagnotes for imformation that will permit interchangeability across solid lines in some instances.
14
MAIN AND NOSE LANDING GEAR
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MAIN AND NOSE LANDING GEAR
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MAIN GEAR ASSEMBLYCMM.32-16-01PN.65-737761-11 thru –16, thru –42, -65, -66, -81, -82, -87, -88, -97, -109,-110, -115, -116, -121, -122, -125 thru –128.
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MAIN AND NOSE LANDING GEAR
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MAIN AND NOSE LANDING GEAR
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SHOCK STRUT
CMM.32-11-11PN.65-46100-5, -6, -9 thru –31, -33, thru –79
18
MAIN AND NOSE LANDING GEAR
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MAIN AND NOSE LANDING GEAR
SUPPORT TUBE –ORIFICE
ORIFICE PLATE SHOCK- STRUT
MATERING PIN
INNER CYLINDER
OUTER CYLINDER
SEAL ADAPTER
BEARING LOWER
BEARING UPPER
DRAIN TUBE
GLAND NUT
SNUBBING VALVE
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MAIN AND NOSE LANDING GEAR
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MAIN AND NOSE LANDING GEAR
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MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
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MAIN AND NOSE LANDING GEAR
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MAIN AND NOSE LANDING GEAR
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MAIN AND NOSE LANDING GEAR
FLUID AND NITORGEN SERVICINGMAIN GEAR SHOCK STRUT
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MAIN AND NOSE LANDING GEARFOR TRAINING PURPOSE ONLY
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MAIN AND NOSE LANDING GEAR
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MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
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MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
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MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
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MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
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MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
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MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
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MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
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MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
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MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
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MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
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MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
PT MULADATU
MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
PT MULADATU
MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
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MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
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MAIN AND NOSE LANDING GEAR
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MAIN AND NOSE LANDING GEAR
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MAIN AND NOSE LANDING GEAR
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MAIN AND NOSE LANDING GEAR
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SIDE STRUT
CMM.32-17-11 PN.65-73761-21 thru –26, -50, -55, -56, -77, -85, -86, -93 thru –96, -103, -105, -106, -111, -123, -124.
MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
PT MULADATU
MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
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MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
PT MULADATU
MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
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MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
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MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
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MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
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MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
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MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
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MAIN AND NOSE LANDING GEAR
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MAIN AND NOSE LANDING GEAR
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UP-LOCK ASSEMBLY
CMM.32-17-01PN.65-46141-5 thru -12.PN.65-46141-15 thru -26
MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
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MAIN AND NOSE LANDING GEAR
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MAIN GEAR MINOR COMPONENT CMM.32-16-31
MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
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Overhaul Main Gear Process Special process (No cap) Common process (cap)
Diss Assembl
y
Hard Chrom Platting
Grinding &
machining
BakingShootpennin
g
HoningBoring
NDT MPI/FP
I
SandBlastin
g
Cadmium
Platting
Painting
Cleaning,
Stripping
Main Gear Assy
Main LG Shock Strut
Main LG Up Lock
Main LG Side Strut
Main LG Minor
Component
Major Part
Inner CylinderOuter Cylinder
Upper/Lower Torsion LinkTrunnion Link
Upper/Lower Drag StrutUniversal-Lower Side Strut
Trunion PinAttach Fitting-Tee Bolt
Universal Reaction LinkActuator Beam Arm
Reaction LinkUpper/Lower Side StrutLink Assembly Up Lock
Bellcrank Up LockHook Up Lock
Fuse Bolt-Fwd Trunnion BearingActuator Beam
Fuse Nut-Aft Trunion
Metering PinSupport Tube Oriffice
Orifice Plate-Shock StrutDrain TubeGland Nut
Pin Torsion LinksUpper/Lower Bolt Drag StrutBolt Tee Fitting Attechment
Nut – Trunion PinUpper/Lower Link Down Lock
Shaft Spring SupportBolt-Reaction Link Side Strut
Bolt-Upper Side StrutBolt Side Strut
Bolt Reaction Link UplockBolt-Downlock Link pivot
Shaft Uplock SupportBolt Reaction Link
Bolt Actuator Beam OitboardBolt Lower Side Strut
Support LinkTrunnion Bearing
Fwd Trunion Bearing
MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
PT MULADATU
SAFETY PRECAUTION
OBEY ALL WARNINGS, CAUTIONS AND NOTES MENTIONED IN
APPLICABLE DOCUMENT(S).
MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
PT MULADATU
B.737 NOSE GEAR INSTALLATION (BUILD UP 32-21-38).
General, Description and Operation.
The nose gear supports the forward end of the fuselage and provides directional control while the airplane is on the ground. The nose gear includes a drag brace, shock strut and torsion links, and hydraulically actuated to retract forward and up into wheel well recessed into the lower nose section of the airplane.
The nose gear buid up is an interchangeable module consisting of nose gear assembly, wheel and tire assemblies, taxi light and wiring harness, hydraulic tubing, nose wheel steering depressurization valve, steering cable and nose wheel steering control mechanism.
The unit provides rolling support with shock absorbing and steering capabilities. Steering inputs are transferred to the steering actuators throught a vontrol cable to the control mechanism and matering valve to provide steering control.
Electrical components consist of a taxi light and wiring harness
Weight………. 320 pounds.
MAIN AND NOSE LANDING GEAR
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NOSE GEAR BUILD- UP
MAIN AND NOSE LANDING GEAR
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MAIN AND NOSE LANDING GEAR
CMM 32-26-01 ( B.737-200 )CMM 32-21-48 ( B.737-300/400/500 )
CMM 32-21-58. ( B.737-300/400/500 ) CMM 32-21-11 ( B.737-200 )
CMM 32-34-13
NOSE GEAR MINOR COMPONENTSOHM 32-01-03
PIN DRAG BRACE CENTER
PIN DRAG BRACE UPPER
LOWER DRAG BRACE UPPER DRAG BRACE
BOLT DRAG BRACE LOWER
AFT LOCK MECHANISM SHAFT
FOR TRAINING PURPOSE ONLY
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Interchangeability and Life-limited Parts( example )
- Service leter has been released to provide landing gear structural component Interchangeability imformation.- Drawing 65C73762 outlines Interchangeability which are FAA approved.- As drawing 65C73762 is reviced to add new part number, service letter will be reviced also.
MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
PT MULADATU
Interchangeability and Life-limited Parts( example )
- Service leter has been released to provide landing gear structural component Interchangeability imformation.- Drawing 65C73762 outlines Interchangeability which are FAA approved.- As drawing 65C73762 is reviced to add new part number, service letter will be reviced also.
MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
PT MULADATU
Interchangeability and Life-limited Parts ( example )
- This drawing includes component life limit data
- Serialization of life limited components is needed to track life limited parts
MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
PT MULADATU
Interchangeability and Life-limited Parts ( example )
MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
PT MULADATU
A. All part numbers listed within a block are fully interchangeable witheach other for listed gross weights. Only part/assembly numbers atthe interchangeable level are shown in this document. See CMM/OHM, D6-17370 for lower level components. If only one part is shown for an item, there is no alternate part available.
B. Some blocks are separated into groups of numbers is differentairplane gross weight limitations. All parts within the block may be interchanged provided the maximum gross weight limitation of each part is not exceeded. C. All part numbers listed within a block which is separated by a solidline from the previous or following block, are not generally interchangeable with part numbers listed in the block. Refer to flagnotes for imformation that will permit interchangeability across solid lines in some instances.
How to Use Interchangeability list.
MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
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NOSE GEAR ASSEMBLY CMM 32-21-48.
PART NUMBER 65-73762-21 / -25 / -26 / -27 / -28
The nose gear assembly includes the shock strut, torsion links, steering collar, steering cylinders and steering metering valve.
The shock strut absorbs and impacts during take-off, landing and taxiing operations.The torsion links keep radial alignment of the shock strut inner and outer cylinders during compression and extension. The metering valve sends hydraulic fluid to the steering cylinders, which push their piston to turn the steering collar to turn the nose gear.
Length – Centerline of axle to mounting trunion holes.Compressed – 35.5 inches.Extended – 47.5 inches.Weight – 190 pounds.
MAIN AND NOSE LANDING GEAR
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Nose Gear Assembly Ref CMM 32-26-01 ( B.737-200 ) Ref CMM 32-21-48 ( B.737-300/400/500 )
MAIN AND NOSE LANDING GEAR
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NOSE GEAR SHOCK STRUT ASSEMBLY.CMM 32-21-58.
PART NUMBER 65-46200-60, -61, -62, -68, -74, -76, -77, -78, -80.-81, -82, -83.
The strut is the main supporting member of the nose gear. Its main structural components are the inner cylinder, which includes the axle, and the outer cylinder, which attaches to the airplane structure. Internal component s include a tapered metering pin, an orifice plate and support tube, and upper and lower centering cams. The inner and outer cylinders are made of high strength steel (270-300 ksi). All pinned joints are assembled with bushings or bearings.
The lower centering cam is keyed to outer cylinder and the upper centering cam is keyed to the inner cylinder. Cam action centers the gear when the shock strut extended. An air valve for inflating the strut is located at the top of outer cylinder. A check valve for servicing the strut with hydraulic fluid is located on the bottom of inner cylinder. A metering pin, connected to the inner cylinder , moves through an orifice plate supported by a tube assembly and varies the fluid flow as the strut is compressed or extended.
Length (extended) – 51 inchesLength (compressed) – 39 inchesAxle Length – 23 inchesWeight (wet) – 168 lbsWeight (dry) – 164 lbs
Hydraulic Fluid – (Prefered) BMS 3-32 Type 1 (with corrosion inhibitor) fluid, D50022 or Type 2 (without corrosion onhibitor) D00467 (Optional) MIL-H-6083 or MIL-H-5606 and Lubrizol 1395 antifriction additive hydraulic fluid, D50090.Fluid Capacity – 6 pints.
Description, Operation and Leading Particulars.
MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
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NOSE GEAR SHOCK STRUT ASSEMBLY.
MAIN AND NOSE LANDING GEAR
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NOSE GEAR SHOCK STRUT
MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
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MAIN AND NOSE LANDING GEARNOSE GEAR SHOCK STRUT DISASSY
Outer CylinderInner CylinderSteering Plate Upp/LwrMatering PinSupport Tube OrificeStem Support OrificeGland NutPlate Upper Orifice
FOR TRAINING PURPOSE ONLY
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NOSE GEAR SHOCK STRUT SEAL NOSE GEAR SHOCK STRUT SEAL REPLACEMENTREPLACEMENT
MAIN AND NOSE LANDING GEAR
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NOSE GEAR SHOCK STRUT SEAL
REPLACEMENT Dinamic Seals.
Greene Tweed T-seals.
7339BFT972P3 Using two back-up rings.
Shamban Seals ( optional )
S34692-339GLF17 T-sealS33327 Hatseal ll
MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
PT MULADATU
MAIN AND NOSE LANDING GEAR
FLUID AND NITORGEN SERVICINGNOSE GEAR SHOCK STRUT
FOR TRAINING PURPOSE ONLY
PT MULADATU
NOSE GEAR MINOR COMPONENT
CMM 32-21-38.
MAIN AND NOSE LANDING GEAR
UPPER DRAG BRACE
LOWER DRAG BRACE
BOLT DRAG BRACE LOWER
AFT LOCK MECHANISM SHAFT
PIN DRAG BRACE UPPERPIN DRAG BRACE CENTER
FOR TRAINING PURPOSE ONLY
PT MULADATU
NOSE GEAR LOCK LINK ASSEMBLYCMM 32-34-13
P/N.65-46245-1 thru –14. DESCRIPTION AND OPERATION
• The nose gear lock link assembly is a two-segment linkage which attaches to the folding joint of the upper and lower drag strut and to airplane structure. Each segment has a shim adjusted stop.
• The assembly folds during nose gear extension or retraction. When the gear comes to the full up or full down position, external spring force pulls the lock link into an overcenter position, which locks the drag braces to hold the nose gear in the up or down position.
MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
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NOSE GEAR LOCK LINK ASSEMBLY
LOCK LINK ASSY - FWD
SHAFT – CENTER LOCK
LOCK BRACE ASSY – AFT
MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
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NOSE GEAR LOCKLINK MECHANISM OPERATION
Lock Brace
Lock Spring Bungee
Lock Link
MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
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Nose Gear Overhaul Process Special process (No cap) Common process (cap)
Diss Assembl
y
Cleaning,
Stripping
Nose Gear Assy
Nose Gear Shock Strut
Nose Gear Minor
Component
Nose Gear Locklink
Hard Chrom Platting
Machining&
Grinding
BakingShoot
peenning
HoningBoring
Inner CylinderOuter CylinderTorsion Links
Collar steeringUpper Drag BraceLower Drag Brace
NDT MPI/FP
I
SandBlastin
g
Cadmium
Platting
Painting
Metering PinSupport Tube Matering Pin
Drain TubeGland Nut
Pin Torsion LinksOrifice Plate-Upper
Stem-orifice Support TubeShaft Spring Support
Support Tube Upper OrificeSteering Plate UpperSteering Plate LowerBolt Steering Collars
Bolt Torsion Link ApexPin Drag Brace CenterPin Uper Drag Braces
Shaft Aft Lock MechanismLock Brace Assy Aft
Bolt Lower Drag BraceLock Link Assy FwdShaft Center Lock
Pin Trunion LHPin Trunion RH
Major Part
MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
PT MULADATU
REFERENCES
The following references material has been used for the development of this handbook:Training Manual B737
Service Letter 737-SL-32-018-DAircraft Maintenance Manual ( AMM )
Component Maintenance Manual ( CMM )Overhaul Manual ( OHM )
MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
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MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
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MAIN AND NOSE LANDING GEAR
FOR TRAINING PURPOSE ONLY
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ADDITIONAL PAGE
B.737 Series Landing Gear System
FOR TRAINING PURPOSE ONLY
PT MULADATU
FOR TRAINING PURPOSE ONLY
B.737 Series Landing Gear System
INNER DOOR
INNER DOOR
UNIVERSAL SISE STRUT ATTACHMENT
UNIVERSAL SISE STRUT ATTACHMENT
SHOCK STRUT
SHOCK STRUT
UPLOCK ROLLER
UPLOCK ROLLER
INNER DOOR PUSHROD
INNER DOOR PUSHROD
PT MULADATU
B.737 Series Landing Gear System
FOR TRAINING PURPOSE ONLY
PT MULADATU
B.737 Series Landing Gear System
FOR TRAINING PURPOSE ONLY
PT MULADATU
FOR TRAINING PURPOSE ONLY
B.737 Series Landing Gear System
PT MULADATU
B.737 Series Landing Gear System
FOR TRAINING PURPOSE ONLY
PT MULADATU
FOR TRAINING PURPOSE ONLY
B.737 Series Landing Gear System
PT MULADATU
B.737 Series Landing Gear System
FOR TRAINING PURPOSE ONLY
PT MULADATU
FOR TRAINING PURPOSE ONLY
B.737 Series Landing Gear System
PT MULADATU
FOR TRAINING PURPOSE ONLY
B.737 Series Landing Gear System
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B.737 Series Landing Gear System
FOR TRAINING PURPOSE ONLY
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FOR TRAINING PURPOSE ONLY
B.737 Series Landing Gear System
PT MULADATU
locked position.
FOR TRAINING PURPOSE ONLY
B.737 Series Landing Gear System
PT MULADATU
B.737 Series Landing Gear System
FOR TRAINING PURPOSE ONLY
PT MULADATU
B.737 Series Landing Gear System
FOR TRAINING PURPOSE ONLY
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B.737 Series Landing Gear System
FOR TRAINING PURPOSE ONLY
PT MULADATU
FOR TRAINING PURPOSE ONLY
B.737 Series Landing Gear System
PT MULADATU