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PSA PC8000- RFS 14-12-16
FOLDING RETRACTABLE STAIRWAYManual for Komatsu PC8000 ExcavatorFULL ACCESS SYSTEM GROUND LEVEL TO OPERATORS CAB
(FRS, FIXED STAIR & WALKWAYS)
Model No.:PSA-PC8000-RFS
Serial No.: PC8000-001-FULL to ~
Date Manufactured: Jan 2013
CONTENTS
Page 3 Section 1 Installation and Mounting DrawingsStair Mountings
Tee Beam
Fixed Upper Stair
Mid Position Strut
Mounting Assembly
Bolting Plates
Mounting Frame and Isolator Boxes
Folding Stairs
Handrails
Top walkway & Access
Fixed Upper Stair
Handrails - Lower Stair
32 Section 2 Operating Procedure
33 Section 3 Recommended Maintenance Procedure
Section 4 Drawings and Repair Parts lists
34 4 Assembly Complete
36 4 Top Fixed stair Assembly
Parts List
38 4-1 Mounting Assembly
Parts List
40 4-2 Landing Assembly
Parts List
41 4-3 Stair Upper Assembly
Parts List
43 4-4 Stair Lower Assembly
Parts List
45 4-5 Pivot Assembly
Parts List
47 4-6 Hydraulic Cylinder Assembly
Parts List
Valve Diagram
50 4-7 Power Pack Assembly
Parts List
53 4-8 Electrical Controls
Wiring Diagrams
Optional Electrical Equipment
Pg2PSA PC8000- RFS 14-12-16
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Pg3PSA PC8000- RFS 14-12-16
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 1. Installation Top Bolting Pads PS-24 771
PROCEDURE - See Drawing Page 4
After the RFS landing is fitted:
1. Fit the Cleats to the Cleat Template per View W and View Y
2. Measure up the corner of the electrical room from the height of the landing of the
Power Step RFS stair per Views W and Z, position the Cleat Template and tack
weld it in place.
3. Weld the Cleats to the corner of the electrical room per View V.
4. Mark the heights of the Bolting Pads per Views U and Zz.
5. Assemble the Bolting Pad Template and Bolting Pads to The Cleats at the corner
of the electrical room, per Views S, U and Zz.
6. Weld the Pads to the wall per View T.
NOTE
Follow all on-site/Mine lifting and safety procedures when installing
PSFS to Excavator.
Pg4PSA PC8000- RFS 14-12-16
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 1. Installation Top Bolting Pads PS-24 771
Pg5PSA PC8000- RFS 14-12-16
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 1. Installation Tee Beam PS-24 772
Procedure.
1. Bolt the Tee Beam and its' accessories to the Bolting Pads per View Z.
2. Fit the Top Strut to the Beam per View Y. Weld the Bolting Pad to the electrical
room wall, also per View Y. Use safer welding, lifting and general working
procedures at all times.
Welding: Cat SP to AS1554 Cat SP unless noted otherwise.
6 cfw uno.
VIEW Y
VIEW Z
Pg6PSA PC8000- RFS 14-12-16
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 1. Installation Fixed Upper Stair PS-24 773 Sht. 1
PROCEDURE.
With the stair assembled per Drg 24 177A,the lower stair mountings installed per Drg 24186
and the top mountings assembled per Drg 24 772:
Fit the stair assembly to the excavator per View Z, with the bottom end fitted to the lower
mountings per View Y and the top end fitted to the top mountings per Views W & X.
(See Drawings Page 7)
This work is to be undertaken in conjunction with the instructions given on Drg 24 774.
Change the order of the various tasks to suit prevailing conditions, eg the
availability of crane/s.
NOTE
Follow all on-site/Mine lifting and safety procedures when installing
PSFS to Excavator.
NOTE
For Mounting Mid Position Strut
see Drawing PS-24775 - Pg 11
Pg7PSA PC8000- RFS 14-12-16
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 1. Installation Fixed Upper Stair PS-24 773 Sht. 2
VIEW W
VIEW X
VIEW Y
Pg8PSA PC8000- RFS 14-12-16
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 1. Installation Fixed Upper Stair PS-24 774
NOTE
Follow all on-site/Mine lifting and safety procedures when installing
PSFS to Excavator.
PROCEDURE.
1. With the fixed stair mounted to the excavator per Drg 24 773,check that the landing
at the top of the stair is located beside the lower level of the OEM cagin landing,
per Details V and W. If it is not, adjust the position of the whole fixed stairs by
moving it relative to the bottom mountings, per Detail X.
2. IF, when the position of the fixed stair is finally resolved per '1' above, the 100 x 10
flatbar slider attached under the channel frame of the landing does not continue
over the rubber cushions of the mountings, extend the slider per View S and weld
an additional Stiffener between inside the channels using the material provided.
3. Adjust the lateral position of the fixed stair so it is 25 - 40mm away from the lower
level cabin landing, per Detail W. Adjust the lateral position by loosening
clamping bolts and sliding the top and bottom mountings sideways on the SHS
beams.
4. Cut off the frame channels of the top stair landing where they extend past the top
mountings and relocate the Top End Panel so it is approximately aligned with the
centre line of the Tee Beam,per View W.
5. Re-install the OEM emergency escape ladder. Inspect the space around the
ladder - if, per View U, it is found that the outer clamp plate on the horizontal run
of the Tee Beam might snare the clothing of a person using the ladder, weld the
brackets to the beam per Detail T and permanently remove the outer clamp plates.
NOTE
Unless directed otherwise, welding must comply with AS1554 Cat SP.
Pg9PSA PC8000- RFS 14-12-16
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 1. Installation Fixed Upper Stair PS-24 774 Sht. 1
NOTE
Follow all on-site/Mine lifting and safety procedures when installing
PSFS to Excavator.
W
V
VIEW Z
VIEW Y
VIEW SDETAIL X
Pg10PSA PC8000- RFS 14-12-16
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 1. Installation Fixed Upper Stair PS-24774 Sht. 2
Pg11PSA PC8000- RFS 14-12-16
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 1. Installation Mid Position Strut PS-24775
PROCEDURE.
Fit the Mid Position Strut between the stair frame and the wall of the excavator house.
Locate the strut near the back wall of the fuel tank. Holes are provided in the stair frame
to bolt the isolator mounting to. If these cannot be used, for instance because the
strut would be obstructed by the fuel tank, drill holes to suit. Such holes should be
distanced at least 50mm from existing holes in the stair channel flange.
One end yoke is not fully welded to the strut pipe.
Cut length of the strut to suit and weld the end yoke fully.
Check the other end.
Pg12PSA PC8000- RFS 14-12-16
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 1. Installation Mounting Assembly PS-24376
Pg13PSA PC8000- RFS 14-12-16
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 1. Installation (1) Bolting Plates P30 377 & P30 378
INSTRUCTIONS
See drawing P30 378 (Page15)
1. Per View 1 and Detail Z, fit the three inside Mounting Isolator Box Sides
underneath the Closer Plate, with the Side Pad Supports fitted and rubber elements
in place. Use appropriate thread locking compound on bolts and nuts attaching the
Side Pad Supports.
2. Using the Installation Carrier, sling the Stair Mounting Frame into place under the
machine walkway, with rubber elements sitting in place on top, per View 2 and
Detail Y.
3. Also per View 2, fit the two Inner Isolator Shells to their bolting pads but without any
rubber inside.
PROCEDURE.
See drawing P30 377 (Page14)
1. Drill holes for Installation Bolts (shown View 1-1, location View2) in the top plate of
the outer beam (Beam 1) of the side walkway of the excavator - ~18 or ~19 holes.
2 Look at the part of the walkway beam structure shown by the arrow Y in Views 1-1
and 1-2.
- If the lower edge of the inner vertical plate of Beam 1 terminates at the level of
the bottom of the adjacent Beams 2 & 3 as shown in Detail Y-1, allowing the 10mm
fillet weld called for, proceed to '3'.
- If the lower edge of the inner vertical plate of Beam 1 terminates above the level
of the bottom of the adjacent Beams 2 & 3 as shown in the left side of Detail Y-2,
preventing the weld called for in Detail Y-1, fit the Repair Plate to the lower edge of
the vertical plate, full length between Beams 2 & 3.
3. Grind/cut the necessary weld preparations, and fit the Closer Plate under Beam 1
(shown in View 1-1, location View 2, weld prep details View 1-2). Temporarily
support the Closer Plate with the Installation Bolts and other means if required.
Weld the Closer Plate to the machine and remove the Installation Bolts.
4. Fit and weld the Closer Reinforcing Gussets and Closer Gusset Flange to the
Closer Plate and beam, (Views 1-1, 2 and Detail Z).
5. Fit and weld the Inner Isolator Bases under Beams of the walkway (Views 1-1, 1-2
and 2).
NOTE
Follow all on-site/Mine lifting and safety procedures when installing
PSFS to Excavator.
Pg14PSA PC8000- RFS 14-12-16
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 1. Installation (1) Bolting Plates P30 377
VIE
W 1
-2
DE
TA
ILZ
DE
TA
ILY
-2
VIE
W 2
DE
TA
ILY
-1
VIE
W 1
-1
Pg15PSA PC8000- RFS 14-12-16
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 1. Installation (2) Mounting Frame P30 378
VIE
W Z
VIE
W 1
VIE
W 2
VIE
W Y
Pg16PSA PC8000- RFS 14-12-16
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 1. Installation (2A) Isolator Boxes P30 384
See Drawing P30-384 (Page 11)
1. Per Drawing P30 376 and View 1 (Pg7),assemble the Outer Isolator components
on the Mounting Frame. Adjust the clearance or compression of the isolator
elements - the vertical isolator pads should be slightly compressed when initially
installed so assemble with spacer pads in the bottom of the isolator to achieve the
appropriate compression. Horizontally (in/out and forward/backward), initial
assembly can vary from 2mm compression to 2mm clearance. Position the
spacers in consistent positions in all three assemblies.
2. Per Views 2-1 & 2-2, tie the partly assembled isolator boxed in place on the
mounting beam. Use 6mm steel wire cable and a turnbuckle to tighten each box to
the beam. Note that the views do not show turnbuckles but they are required. The
required locations on the beam of the mounting frame is shown in View 3.
3. Per View 4, tie the Top Isolator End Stops and their isolator pads together with tape
- insulation tape, masking tape or duct tape etc.
4. Bolt the three taped-together assemblies to the underside of the box beam closer
plate, per View 5. The tape need not be removed.
NOTE
Follow all on-site/Mine lifting and safety procedures when installing
PSFS to Excavator.
NOTES.
1. USE SAFE WORKING PRACTICES.
2. Apply an appropriate thread-lock compound to all bolts & nuts.
3. Bolt selections are listed on Drg P30 376.
4. One 'Mounting Isolator End Stop P30 352' with a clearance hole cut in it is to be
fitted in the rearmost Outer Islator Mounting, see View 3.
Pg17PSA PC8000- RFS 14-12-16
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 1. Installation (2A) Isolator Boxes P30-384
VIE
W 3
VIE
W 2
-2V
IEW
2-1
VIE
W 5
VIE
W 4
VIE
W 1
Pg18PSA PC8000- RFS 14-12-16
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 1. Installation (3) Isolators P30 379
PROCEDURE
See Drawing P30 379
1. Per View 1, fit the Top Pad Stops to the closer plate above the beam of the
mounting frame, at each isolator box. If it is necessary to lower the mounting beam
to make space for hands and/or tools, keep the arms of the mounting beam
engaged in the inner isolator shells and lower the beam.
PLACE BLOCKS OF WOOD OR SIMILAR SPACERS BETWEEN THE MOUNTING BEAM
AND THE CLOSER PLATE OR THE WALKWAY STRUCTURE SO AS TO ELIMINATE
THE DANGER OF CRUSHING A HAND IF THE BEAM MOVES. See View 2.
2. Per Views 1 & 3, fit the the Mounting Isolator Floor Plates to the inner Isolator Box
Sides. Put the Mounting Isolator Elements between the Mounting Frame beam and
the Floor Plates, with 5mm Packing Sheets between the isolator elements per
View 4.
3. Per View 3, fit the Mounting Isolator Bottom Pad Stops to the Floor plates.
4. Per View 3, fit the outer Isolator Box Side with the Side Pad Support fitted and
isolator elements in place. Use thread locking compound on the bolts and nuts
attaching the Side Pad Suports.
5. Per View 3, fit the Mounting Isolator End Stops and Elements.
6. Remove the Inner Isolator Shells and fit the isolator elements, per View 5.
NOTE
Follow all on-site/Mine lifting and safety procedures when installing
PSFS to Excavator.
NOTES.
1. USE SAFE WORKING PRACTICES AT ALL TIMES.
2. The isolators must be correctly adjusted as regards clearance or compression on
the isolator pads. Insert/remove spacers in order to achieve the required results.
- the top and bottom isolators must hold the beam of the mounting frame firm
(vertically). Add/remove any spacers from UNDER the beam,- horizontally, a range
from a small clearance over the isolator pads (up to 2mm) through to a small
compression (up to 2mm) is acceptable.
Where required these spacers can be fitted only on one side of the isolator
assembly, that is, not shared in thickness front and back. Ensure that the spacers
are positioned in such a way that they cannot work free past the relevant
keeper/s.
3. Mounting Isolator End Stop P30 352 00S' with a clearance hole cut in it is to be
fitted in the rearmost Outer Isolator Mounting, see View 6.
Pg19PSA PC8000- RFS 14-12-16
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 1. Installation (3) Isolators P30 379
VIEW 2
VIEW 3
VIEW 4
VIEW 5
VIEW 1
Pg20PSA PC8000- RFS 14-12-16
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 1. Installation (3A Mounting Frame P30-385
NOTES.
1. USE SAFE WORKING PRACTICES.
2. One 'Mounting Isolator End Stop P30 352' with a clearance hole cut in it is to be
fitted in the rearmost Outer Islator Mounting, see View 3.
NOTE
Follow all on-site/Mine lifting and safety procedures when installing
PSFS to Excavator.
PROCEDURE
See Drawing P30 385 (Page 21)
1. Per View 1, fit the Mounting Frame, fitted with Isolator Boxes, under the Closer
Beam and bolt in place.
2. Per View 2, fit and bolt the Inner Mounting Isolators to their bolting pads.
3. Remove the beams and bolts holding the isolator boxes to the mounting beam.
Pg21PSA PC8000- RFS 14-12-16
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 1. Installation (3A) Mounting Frames P30-385
Pg22PSA PC8000- RFS 14-12-16
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 1. Installation 4 Mounting Braces P30 380
Pg23PSA PC8000- RFS 14-12-16
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To suit Komatsu PC8000 Excavator
Section 1. Installation Folding Stair P30 381
PROCEDURE.
1. Fit the stair set to the flanges of the mounting frame. Note, per View 2, that the top bolts in the
flanges must be inserted throught the hollow beam of the mounting frame.
2. Fit the stair's Power Unit in an appropriate place such as under the stair/ladder that leads from the
lower walkway up to the cabin and motor house roof. Pipe up the hydraulics etc. (Not shown.)
VIEW 1
VIEW 2
Pg24PSA PC8000- RFS 14-12-16
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To suit Komatsu PC8000 Excavator
Section 1. Installation
Mounting Braces + Handrails & Small Components - PS-24787
PROCEDURE - See Page 25
VARY THE ORDER OF THESE TASKS TO SUIT.
1. Fit the Inner Handrail 24 792 02 to the original toeboard of the excavator walkway,
either by drilling and bolting the toeboard or by welding on
Bolting Pads 24 792 04
2. Fit Outer Handrail Loop 24 792 01 by welding it to the dropper of the Inner
Handrail and by fitting and welding Mounting Bends 24 792 03 to the base of the
new handrail posts and the Outer Handrail Loop. Note that the attachment to the
outer handrail loop should not attach to the top rail, therby blocking free and safe
movement of hands along the rail. View 2 shows an approx height above the
walkway floor - actual installed height should match the outer handrail of the stair
landing.
3. P30 371 Mezzanine Stair Tread to the cleats on the closer plate. Weld the Floor
Extension P30 373 to the side of the border beam of the excavator walkway with its'
surface level with the floor of the walkway. Bolt the Toeboard P30 372 to the inside
edge of the RFS landing.
4. Fit the Fender Bar parts as shown in Detail Z. The purpose of the fender is to guide
the stair into the stowed position without catching on any fixed components if it is
distorted by an accident.
5. Cut the OEM walkway toeboard to dims on View 2. Remodel the OEM handrails to
suit, if necessary using straight pipe and bends supplied with the kit.
NOTE
Follow all on-site/Mine lifting and safety procedures when installing
PSFS to Excavator.
Pg25PSA PC8000- RFS 14-12-16
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 1. Installation
Handrails and Small Components PS-24 787
See Procedure Pg. 24
VIE
W 2
VIEW 1
VIEW 2
Pg26PSA PC8000- RFS 14-12-16
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 1. Installation
Lower Stair Mountings & Handrails PS- 24788
PROCEDURE.
After fitting the RFS stair set to the excavator per
View Y and Detail Z:
- fit the Lower Mounting Beam and the
components shown in Views X-1 & X-2
- fit the RFS Landing Extension and Outer
Handrail per Views X-1 & X-2.V
IEW
Y
VIE
W
X-1
VIE
W
X-2
DE
TA
ILZ
Pg27PSA PC8000- RFS 14-12-16
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 1. Installation Top Walkway & Access PS-24 193
PROCEDURE.
See Drawing page 28
Refering to Views Y and Z-1 and Z-2:
1. Close off the opening in the handrails and toeboard that where the original ladder
emerged on to the walkway behind the cabin.
2. Cut away the original handrails beside the new stair to make an accessway to the
cabin walkway 600 - 700 mm wide.. Trim the sides of the opening to suit.
3. Make supports to suit and raise the floor of the walkway near the cabin door. Raise
the height of the toeboard bordering the raised floor using the material provided.
Cut the toeboard away, down to floor level, in the accessway to the fixed stair.
NOTE
Follow all on-site/Mine lifting and safety procedures when installing
PSFS to Excavator.
Pg28PSA PC8000- RFS 14-12-16
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 1. Installation Top Walkway & Access PS-24 193
Welding: all Cat SP to AS1554 unless directed otherwise.
5mm continuous fillet weld unless noted otherwise.
VIEW Z-1
VIEW Z-2
VIEW Y
Pg29PSA PC8000- RFS 14-12-16
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 1. Installation Fixed Upper Stair PS-24 190B
Fit Handrail Opening Loop, Mezzanine Stair Handrail and RFS Landing Back Toeboard
as shown and noted.
Use safe lifting and working procedures at all times.
Welding: Cat SP to AS1554 unless specifically directed
otherwise, 5 cfw uno.
Pg30PSA PC8000- RFS 14-12-16
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 1. Installation Lower Stile Handrails PS-24786
PROCEDURE
1. Fit Lower Stile Handrails per View Y.
2. Drill holes to suit for top post base.
3. Use Nut Strip per Detail Z to fit nuts for top post base in inaccessible space.
Pg31PSA PC8000- RFS 14-12-16
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To suit Komatsu PC8000 Excavator
Section 1. Installation General Arrangement P30 320
Pg32PSA PC8000- RFS 14-12-16
To Lower Stairway (from the machine)
Position excavator in a level, safe area, away from the work face, whenever possible.
Position the excavator body square to the tracks, lower bucket, apply park brake and
lower engine speed to idle.
Descend stairway behind cabin to lower walkway.
Check that the area below and behind the Folding Retractable Stairway (FRS) is clear of
people and obstacles, and lower stairway by operating the two position electrical switch
adjacent to the stairway, to the down position by pressing the switch down.
Hold the switch in the down position until stairway is fully extended and lowered.
If the excavator is parked on uneven ground, the bottom of the stairway may touch the
ground before the FRS is in the fully extended and lowered position.
Should this occur, descend the stairway with caution.
Bottom of stairway is designed to rest on the ground in the fully lowered and extended
position, but can be used in the fully lowered position without resting on the ground.
To Raise Stairway
Ascend the stairway onto the lower walkway of the excavator.
Ensure the area around the stairway is clear of people and standing to the side, clear of
the area the handrails and stairway raises into, operate the electrical switch to the raise
position (up).
Hold the switch in the up position until the stairway is in the fully raised position.
The stairway is now raised and stored.
Note:
The stairway is interlocked with the swing interlock of the excavator, and the machine will
not swing with the stairway out of the fully raised position.
Operation of the FRS mechanically extends the lower stair section as the stairway is
lowered by means of the link rods to the upper platform of the FRS.
There is no method of individual control of the upper and lower sections.
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 2 Operating Procedure
OPERATING NOTES
NOTE: FLOW CONTROL VALVE ADJUSTMENT:
The valve should be positioned to restrict the flow and speed of the Power Step when
lowering. Adjust the knob on top of the valve by turning left or right (clockwise) when the
step is being lowered, until it is lowering at a safe and reasonable speed.
When it is adjusted, lock the adjusting knob by tightening the grub screw located on the
side of the knob.
NOTE: MAGNETIC 'GO' SWITCH ADJUSTMENT:
The switch target trigger area is located on the opposite side and end from the cable entry
point on the switch. Once it is mounted to the switch bracket, adjust the switch in or out
from the stair steel trigger point, to be within 3mm - 10mm from touching each other when
the stair is in the desired rest position.
[DO NOT EXCEED 10MM DISTANCE BETWEEN THE SWITCH AND STRIKER PLATE].
Test by raising and lowering the Power Step a couple of times and adjust again if
necessary.
Pg33PSA PC8000- RFS 14-12-16
Daily
Visually check stairway and structure for damage, loose components,
handrails, etc.
Check for hydraulic oil leaks from hydraulic cylinders, plumbing and hoses.
Notify the appropriate supervisor for any observed damage or malfunction.
500 Hours
Grease all grease nipples. Lower or raise stairway for accessibility.
Check hydraulic oil level in power pack and top up as necessary. (Stairway in
lowered position).
Check main mounting bolts for torque.
Top up using same hydraulic oil as used in hydraulics of machine.
Thoroughly check all electrical wiring for damage, replace as necessary.
Repeat daily check as above.
5000 Hours
Change hydraulic oil in tank of hydraulic power pack (10.0 litres).
It is recommended that the same hydraulic oil be used in the power pack as the
hydraulics of the machine.
Grease all grease nipples. Lower or raise stairway for accessibility.
Retorque all main mounting bolts
Repeat daily check as above.
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 3 Recommended Maintenance Procedure
Pg34
FOLDING RETRACTABLE STAIRWAYTo suit Komatsu PC8000 Excavator
Section 4 Assembly Complete
See Page 34
PSA PC8000- RFS 14-12-16
ITEM PART NO. PART NAME QTY
1 PS-24177A TOP FIXED STAIR ASSEMBLY 1
2 PS- 30 376A MOUNTING ASSEMBLY 1
3 PS-30 318A LANDING ASSEMBLY 1
4 PS-30 333A STAIR - UPPER - ASSEMBLY 1
6 PS- 30 301A STAIR - LOWER - ASSEMBLY 1
7 PS-63009-ASSY HYDRAULIC CYLINDER 1
8 PS-80104A-RFS HYDRAULIC - POWER UNIT - ASSEMBLY 1
Pg35PSA PC8000- RFS 14-12-16
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 4. Assembly Complete
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 4-1 Top Fixed Stair Assembly PS-24177A
See Parts List Page 37
Pg36PSA PC8000- RFS 14-12-16
Pg37PSA PC8000- RFS 14-12-16
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 4-1 Top Fixed Stair Assembly PS-24177A
See Drawing Page 36
Item Part No. Part Name Qty
1
1A
2
3
4
5
6
7
8
9
10
11
11A
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
PS-24172
PS-24168
PS-P30321
PS-24755
PS-24161
PS-24175
PS-24173
PS-24758
PS-24761
PS-24154-99
PS-24763
PS-24160-03
PS-24160-00
PS-24766
PS-24181
PS-21930
PS-24183
PS-24185
PS-24765-02
CPS-M20X140ZP
CPS-M12X150ZP
CPS-M12X120ZP
CPS-M12X40ZP
CPS-M12X35ZP
CPS-M12X25ZP
CPS-M12NZP
CPS-M20WH
CPS-M12WH
FIXED STAIR FRAME
TOP LANDING FLOOR PANEL
STAIR TREAD
TEE BEAM
LOWER MOUNTING BEAM
HANDRAILS - INNER
HANDRAILS - OUTER
MOUNTING CUSHION ASSEMBLY
MOUNTING CUSHION SHELF (Incl clamp Pl.)
TEE BRACKET
TOP STRUT
CLAMP PLATE
LOWER MOUNTING BEAM BRACKET
MID POSITION STRUT
LIFTING LUG
BUSH ISOLATOR
ISOLATOR HALF
ISOLATOR PIN
ISOLATOR BOLTING PAD
BOLT-M20 x 140
BOLT-M12 x 150
BOLT-M12 x 120
BOLT-M12 x 40
BOLT-M12 x 35
BOLT-M12 x 25
NUT-M12
WASHER-HARDENED-M20
WASHER-HARDENED-M12
1
1
16
1
1
1
1
1set
1
2
1
2
2
1
4
6
2
2
1
6
16
2
12
94
36
148
6
260
Pg38
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 4-1 Mounting Assembly PS- 30 376A
See Parts List Page 39
PSA PC8000- RFS 14-12-16
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 4-1 Mounting Assembly PS- 30 376A
(Includes all Items below excluding 14,15,&16)
See Drawing Page 38
PSA PC8000- RFS 14-12-16
Pg39
Item Part No. Part Name Qty
1
2
2A
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
PS-30365
PS-30369
PS-30375
PS-30366-01
PS-30366-02
PS-30358
PS-30359
PS-30352
PS-30353
PS-30354
PS-30355
PS-30356
PS-30357
PS-30367
PS-30371
PS-30372
PS-30373
PS-M24X100ZP
PS-M24X90ZP
CPS-M16X60ZP
CPS-M16X50ZP
CPS-M16X25ZP
CPS-M12X35ZP
CPS-M12X25ZP
PS-M24NZP
CPS-M16NZP
CPS-M12NZP
CPS-M24WH
CPS-M16WH
CPS-M12WH
MAIN MOUNTING BEAM
BOX BEAM CLOSER
FENDER BAR
MOUNTING ARM BRACE-ARM END TIE
MOUNTING ARM BRACE-DIAGONAL
INNER ISOLATOR SHELL
INNER ISOLATOR BASE
MOUNTING ISOLATOR END STOP
MOUNTING ISOLATOR-BOX SIDE
MOUNTING ISOLATOR-TOP PAD STOP
MOUNTING ISOLATOR-BOTTOM PAD STOP
MOUNTING ISOLATOR-FLOOR PLATE
MOUNTING ISOLATOR-SIDE PAD SUPPORT
MOUNTING ISOLATOR ELEMENT
MEZZANINE STAIR TREAD
TOEBOARD
FLOOR EXTENSION
BOLT-M24 x 100
BOLT-M24 x 90
BOLT-M16 x 60
BOLT-M16 x 50
BOLT-M16 x 25
BOLT-M12 x 35
BOLT-M12 x 25
NUT-M24
NUT-M16
NUT-M12
WASHER - HARDENED- M24
WASHER - HARDENED- M16
WASHER - HARDENED- M12
1
1
1
1
1
2
2
12
6
6
6
3
6
1set
2
1
1
4
4
24
4
64
15
28
8
28
15
16
116
58
Pg40
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 4-2 Landing Assembly PS- 30 318A
PSA PC8000- RFS 14-12-16
Item Part No. Part Name Qty
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
PS-30318
PS-24159
PS-24162
PS-24784
PS-30382
PS-30312
PS-63009-B
PS-P30382-04
PS-M24X100ZP
PS-M24X90ZP
CPS-M12X35ZP
CPS-M12X25ZP
CPS-M12X20ZP
PS-M24NZ
CPS-M12NZ
CPS-M24WH
CPS-M12WH
LANDING FABRICATION
LANDING EXTENSION
LANDING TOEBOARD
HANDRAIL-LANDING
HANDRAIL-REPLACEMENT
LANDING-GRID
BUSHES-CLEVIS
BOLTING PAD
BOLT-M24 x 100
BOLT-M24 x 90
BOLT-M12 x 35
BOLT-M12 x 25
BOLT-M12 x 20
NUT-M24
NUT-M12
WASHER-HARDENED-M24
WASHER-HARDENED-M12
1
1
1
1
1
1
2
3
4
4
4
14
12
8
28
16
56
Pg41
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 4-3 Stair - Upper Assembly PS-30 333A
See Parts List Page 42
PSA PC8000- RFS 14-12-16
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 4-3 Stair Upper Assembly PS-30 333A
Parts List
See Drawing Page 41
PSA PC8000- RFS 14-12-16
Pg42
Item Part No. Part Name Qty
1
1A
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
PS-30333
PS-30323
PS-30321
PS-30307
PS-30308
PS-30315
PS-40001
PS-30334
PS-30313
PS-32266-SAN
PS-38998-C
CPS-M10X80PR
PS-91107
PS-30335
CPS-M12X40ZP
CPS-M12X35ZP
CPS-M12NZP
CPS-M12WH
STRINGER ASSEMBLY
TOP TREAD
TREAD STEP
BUSHING UPPER & CRANK PIVOT
BUSHING-CENTER-PIVOT
BUFFER-BRACKET
RUBBER STOP
BUFFER-FRAME-LOWER-STAIR
PIVOT-SHAFT-TOP
NON-SLIP NOSING
FRS-SPRING SET
ROLL-PIN-M10 x 80
WASHER-MACHINED
BUSHES-CLEVIS
BOLT-M12 x 40
BOLT-M12 x 35
NUT-M12
WASHER-HARDENED-M12
1
1
7
4
2
2
4
1
1
7
1
2
2
2
14
28
46
96
Set of 2
Pg43
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 4-4 Stair Lower Assembly PS-30 301A
See Parts List Page 44
PSA PC8000- RFS 14-12-16
Pg44
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 4-4 Stair Lower Assembly PS-30 301A
Parts List
See Drawing Page 43
PSA PC8000- RFS 14-12-16
Item Part No. Part Name Qty
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
PS-30301L
PS-30301R
PS-30302L
PS-30302R
PS-30300L
PS-30300R
PS-30322
PS-30321
PS-24778
PS-32266-SAN
PS-36021
CPS-M12X45ZP
CPS-M12X35ZP
CPS-M12X30ZP
CPS-M12NZP
CPS-M12WH
STAIR STRINGER-LH
STAIR STRINGER-RH
STAIR-EXTENSION-LH
STAIR-EXTENSION-RH
STAIR-STILE-CAP-LH
STAIR-STILE-CAP-RH
TREAD-STEP-NARROW
TREAD-STEP-STD
HANDRAIL-LOWER SECTION
NON-SLIP NOSING
TORQUE TUBE LINKAGE
BOLT-M12 x 45
BOLT-M12 x 35
BOLT-M12 x 30
NUT-M12
WASHER-HARDENED-M12
1
1
1
1
1
1
1
7
1set
8
1
4
28
38
70
140
Pg45
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 4-5 Pivot Assembly
See Parts List Page 46
PSA PC8000- RFS 14-12-16
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 4-5 Pivot Assembly
Parts List
See Drawing Page 45
PSA PC8000- RFS 14-12-16 Pg46
Item Part No. Part Name Qty
1
1A
2
2A
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
PS-30306
PS-30306-04
PS-30303
PS-30303-01
PS-30304
PS-30305
PS-30327
PS-29004
PS-29003
CPS-M10X80PR
PS-M24X120ZP
PS-M20X100ZP
PS-M20X60ZP
CPS-3/4”X4 1/2”UNF
PS-29004-N
PS-29003-N
PS-M24NN
PS-M20NN
CPS-3/4” N/L UNF
CPS-M24WH
CPS-M20WH
CPS-W3/4”X5”
CRANK ASSY- PRIMARY
SHAFT - PRIMARY
CRANK ASSY - SECONDARY
SHAFT - SECONDARY
CRANK-REACTION-ARM
MECHANISM LINK
ROD-LINKAGE-(2041mm)
ROD END-LH
ROD END-RH
ROLL PIN
BOLT- M24 x 120 10.9
BOLT- M20 x 100 10.9
BOLT- M20 x 60 10.9
BOLT- 3/4”-x 4 1/2” Gr 8
NUT- LOCKING-LH
NUT- LOCKING-RH
NUT- M24-NYLOC
NUT- M20-NYLOC
NUT- NYLOC-3/4”
WASHER-HARDENED-M24
WASHER-HARDENED-M20
BOLT-3/4” x 5” Gr8 UNF
2
1
2
1
2
2
2
2
2
4
4
4
4
2
2
2
4
8
4
8
24
2
Pg47
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 4-6 Hydraulic Cylinder Assembly PS-63009-ASSY
See Parts List Page 48
PSA PC8000- RFS 14-12-16
Pg48PSA PC8000- RFS 14-12-16
Item Part No. Part Name Qty
1
2
3
4
5
-
PS-63009-A
PS-63009-C
PS-63009-TP
PS-63009-P
CPS-M8x56ZP
PS-63103-N
HYD CYLINDER 2 1/2”
CYLINDER-BUSH-CLEVIS
PIN-CYLINDER-TOP
PIN-CYL-BOTTOM+WASHER
SPLIT PIN - M8 - CLEVIS PIN-TOP
SEAL KIT
2
8
2
2
6
1 NOT SHOWN
Item Part No. Part Name Qty
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
PS61160-KIT
PS-61159
PS-61157
PS-61154
PS-61149
PS-61148
PS-63201
PS-61158-5MM
PS-61160
PS-61147
PS-63202
PS-63202-B
PS-63202-C
PS-61163
PS-61006-1
PS-61166
HARD PLUMBING KIT
FITTING-ELBOW- 9/16”JIC x 1/4”BSPP
FITTING-O RING 1/4BSPP x 9/16”JIC
FITTING-ELBOW-O RING 1/4BSPP x 9/16”JIC
FITTING-TEE-9/16”JIC-M/M
FITTING-TEE-9/16”JIC / 1/4” BSPP
VALVE-PILOT OPERATED-LOCKING
FITTING- 5mm RESTRICTION 90 DEG.
TUBES - 4off 110mm, 1 off 517mm
FERRULES
FLOW CONTROL VALVE
FITTING-JIC NIPPLE
FITTING-JIC SWIVEL
FITTING-REDUCER-3/4”UNO-1/4”BSPP
FITTING-GREASE NIPPLE-90
FITTING-TEE 9/16”
.
3
2
1
1
1
1
4
.
10
1
1
1
4
2
2
CYLINDERS
PLUMBING
Incl. all items listed below
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 4-6 Hydraulic Cylinder Assembly PS-63009-ASSY
Parts List
See Drawing Page 47
Pg49PSA PC8000- RFS 14-12-16
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 4-6 Hydraulic Cylinders (Valve Diagram)
Pg50
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 4-7 Power Pack Assembly PS-80104P (Not including Cradle)
Single Valve Power Pack PS-80104P-FRS (Including Cradle)
PSA PC8000- RFS 14-12-16
10
8
7
6
3
4
9
11
14
18
12
17
16
15
13
2
5
1
21
Pg51
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 4-7 Power Pack Assembly PS-80104P (Not including Cradle)
Single Valve Power Pack PS-80104P-FRS (Including Cradle)
PSA PC8000- RFS 14-12-16
19 20
1
13
Item Part No. Part Name Qty
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
PS-514.9.154
PS-509.5.140
PS-115.6.126
PS-147.900.724
PS-147.481.311A
PS-114.4.951
PS-106.936.308
PS-131.2.19
PS-122.11.1258
PS-149.115.123
PS-538.6.200
PS-118.64
PS-147.790.308
PS-122.11.1276
PS-149.990.991
PS-541.3.126
PS-541.6.89
PS-122.11.357
PS-21613
PS-149.120.820
PS-506.4.254
PLASTIC TANK
TANK FILLER CAP
TANK PLUG
PUMP & HOUSING ASSEMBLY
24V MOTOR
DRIVE COUPLING
EMERGENCY HAND PUMP
CLOSED CENTRE (A1 VALVE)
MANUAL OVERRIDE BUTTON
BASE PANEL (MANIFOLD)
REAR BRACKET
PUMP FILTER
SINGLE VALVE COVER
COVER SWITCH
COVER LIGHT
PUMP PICK UP TUBE
RELIEF TUBE
BUZZER
MOUNTING CRADLE
MASTER SWITCH
O RING SEAL 5.34 x 101
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Pg52PSA PC8000- RFS 14-12-16
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 4-7 Power Pack Assembly
Single Valve Power Pack - Electrical
NOTE.THE RELIEF PRESSURE OF THE POWERPACK IS TO BE SET TO 2800PSI.
IF THE POWERPACK IS REPLACED,THIS RELIEF PRESSURE WILL NEED TO BE
RESET USING INLINE GAUGES.
FAILURE TO DO SO MAY RESULT IN ACCIDENT OR INJURY.
BLUE BROWN
ORANGE WHITE
Pg53PSA PC8000- RFS 14-12-16
Proximity Switch AssemblyMounted on Fixed Landing
Control Pendant SwitchMounted on Handrail
3
4 25
1
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 4-8 Electrical Controls
Item Part No. Part Name Qty
1
2
3
4
5
PS-73013
PS-73013-B
PS-77005
PS-77009-AR
PS-75430
CONTROL PENDANT SWITCH
CONTROL PENDANT BRACKET
HAND RAIL SWITCH HARNESS
SWITCH HARNESS
PROXIMITY SWITCH
1
1
1
1
2
WARNING
LOW OR FAULTY BATTERIES WILL VOID
WARRANTY ON THE POWER PACK AND ALL
ELECTRICAL SWITCHES AND COMPONENTS
PS-77009-AR
HARNESS
Pg54PSA PC8000- RFS 14-12-16
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 4-8 Electrical Controls Wiring Diagram 1
Pg55PSA PC8000- RFS 14-12-16
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 4-8 Electrical Controls Wiring Diagram 2
Pg56PSA PC8000- RFS 14-12-16
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 4-8 Electrical Controls Wiring Diagram 3
Pg57PSA PC8000- RFS 14-12-16
1
5
3 42
O P T I O N A L E X T R A O N L Y
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Section 4-8 Electrical Controls
1. AERIAL BULKHEAD
2. POWER ON LED
3. LADDER UP LED
4 LADDER DOWN LED
5. POWER/LOGIC PLUG
SUGGESTED WIRING FOR HYDRAULIC POWERSTEP STAIRWAY SYSTEM
Remote Control Unit PS-2394Raise/lower Transmitter
PS-2393
Pg58PSA PC8000- RFS 14-12-16
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Emergency Lanyard Kit
PS-HITEX-L/YARD KIT
O P T I O N A L E X T R A O N L Y
Pg59PSA PC8000- RFS 14-12-16
FOLDING RETRACTABLE STAIRWAY
To suit Komatsu PC8000 Excavator
Powerstep Emergency Circuit ( Ladder Down)