- Wheel Loader:
- 950H (S/N: N1A1-UP)
- 962H (S/N: N4A1-UP)
- 966H (S/N: A6G1-UP)
- 972H (S/N: A7G1-UP)
- 962H (S/N: N4A1-UP)
Introduction
This publication contains the information for installation of the inclined ladder. A complete listing of the parts that are contained in this kit are listed in the Parts Manual, SEBC1492. This supplemental product support literature should be used with the appropriate Service Manual and the appropriate Parts Manual that is available for this standard machine.
Do not perform any procedure and do not order parts that are outlined in this publication until you understand the information that is contained in this document.
Machine Preparation
- Connect the steering frame lock. Refer to Disassembly and Assembly, "Steering Frame Lock - Separate and Connect".
Note: The following preparation must be done before starting this procedure.
NOTICE |
---|
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, "Caterpillar Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products. Dispose of all fluids according to local regulations and mandates. |
Personal injury can result from hydraulic oil pressure and hot oil. Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system. Make sure all of the attachments have been lowered, oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand. |
Installation of the 291-3707 Ladder Ar for the 950H and the 962H Wheel Loaders
Removal of Standard Ladder Gp and Left Hand Fender
- Remove four bolts (B) and four washers (A). Remove ladder assembly (C) .
Illustration 1 | g01349035 |
Standard ladder group (A) Washer (B) Bolt (C) Ladder assembly (D) Front handrail (E) Rear handrail (F) Left hand fender assembly |
- Remove handrails (D) and (E). Retain handrails and hardware for later use.
- Remove fender assembly (F) .
Install the New Fender Assembly
- Use the original hardware and install the 278-9579 Fender assembly (24) .
Illustration 2 | g01351301 |
New left fender |
- Reinstall the left hand rear handrail (E) .
Install the Tool Box Assembly
- Use the following hardware and install the two 278-9587 Console Assemblies (5) onto the frame:
Illustration 3 | g01350087 |
Tool box assembly |
- Use the following hardware and install the 272-2785 Door (3) onto the 278-9582 Tool Box Assembly (4) :
- Use the included hardware and install the 294-2382 Latch As (1) and the 222-5151 Pawl (2) onto the 272-2785 Door (3) .
- Use the following hardware and install the 278-9582 Tool Box Assembly (4) onto the two 278-9587 Console Assemblies (5) .
Install the Ladder Group
- Use the following hardware and install the 306-2277 Ladder As (33) onto the 278-9594 Bracket Assembly (26) :
Illustration 4 | g01351996 |
View of ladder assembly |
- Use the following hardware and install the 306-1643 Step Assembly (31) onto the 306-2277 Ladder As (33) :
- Use the following hardware and install the 306-2271 Arm Assembly (32) onto the 267-1780 Plate (22) :
Illustration 5 | g01352304 |
View of arm assembly |
- Use a 5L-4035 Retaining Ring (42) and install the 254-4152 Cylinder (10) and a 254-4151 Roller (9) onto the 306-2271 Arm Assembly (32) .
- Use a 5L-4035 Retaining Ring (42) and install a 254-4151 Roller (9) onto the other side of the 306-2271 Arm Assembly (32) .
- Slide the 254-4152 Cylinder (10) and the two 254-4151 Rollers (9) into the 306-2277 Ladder As (33) from the bottom.
Illustration 6 | g01359868 |
View of subassembly of the inclined ladder |
- Use the following hardware and fasten the end of the 254-4152 Cylinder (10) onto the 306-2277 Ladder As (33) :
- Install the 303-2112 Gas Spring (30) .
Illustration 7 | g01359880 |
View of subassembly of the inclined ladder |
- Use the following hardware and install the two 254-4154 Plates (11) onto the 306-2277 Ladder As (33) :
Illustration 8 | g01359888 |
View of subassembly of the inclined ladder |
- Use the following hardware and install the two 254-4156 Step Belts (12) onto the two 254-4154 Plates (11) :
- Use the following hardware and install the 234-1530 Step As (6) onto the two 254-4156 Step Belts (12) :
- Use the following hardware and install the 278-9594 Bracket As (26) onto the 278-9579 Fender As (24) :
Illustration 9 | g01362167 |
View of the inclined ladder |
- Use the following hardware and install the 267-1780 Plate (22) onto the tool box:
Install the Hose Assembly
- Install the 3V-4791 Grommet (39) into the left fender.
Illustration 10 | g01355660 |
Front view of inclined ladder group |
- Use a 4J-5477 O-Ring Seal (40) and install the 254-5257 Elbow (19) onto the bottom port of the 254-4152 Cylinder (10) .
- Mount the 7I-1024 Guard (64) onto one end of the 310-4761 Hose As (27). Run this end of the hose through the 3V-4791 Grommet (39) and connect the hose onto the 254-5257 Elbow (19).
- Use the following hardware and install the 254-8698 Cover As (20) onto the 306-2277 Ladder As (33) :
Illustration 11 | g01357012 |
Inclined ladder group |
- Preassemble the following parts:
Illustration 12 | g01360048 |
View of assembled block |
- Insert the 254-4189 Block (15) into the opening on the 306-2277 Ladder As (33). Turn the 254-4189 Block within the frame of the ladder. Slide the 254-4189 Block (15) to the top of the opening on the 306-2277 Ladder As (33). Tighten the 8T-4137 Bolt (53) .
Illustration 13 | g01360067 |
View of installation of the block assembly |
- Route the 310-4761 Hose As (27) per Illustration 14.
Illustration 14 | g01357040 |
Top view of hose for the Inclined ladder group |
- Use the following hardware and secure the 310-4761 Hose As (27) :
- Disconnect hose (Y) from the top of the parking brake control valve (Z) .
Illustration 15 | g01357047 |
View of Area "C" from Illustration 14 (Y) Hose for the parking brake actuator (Z) Parking brake control valve |
- Install the 148-8434 Tee As (46) onto the parking brake control valve.
- Reconnect hose (Y) .
- Use a 3J-1907 O-Ring Seal (38) and install the 143-7685 Special Adapter (36) into the 149-2848 Coupling As (4) .
- Place the ring of the 153-6223 Dust Plug (5) over the 143-7685 Special Adapter (36) and 149-2848 Coupling As (4) .
- Use a 4J-5477 O-Ring Seal (40) and connect the 310-4761 Hose As (27) onto the 143-7685 Special Adapter (36) .
Installation of the 291-3712 Ladder Ar for the 966H and the 972H Wheel Loaders
Removal of the Standard Ladder Gp and Left Hand Fender
- Remove four bolts (D) and four washers (E). Remove ladder (C) .
Illustration 16 | g01360184 |
Left hand view of machine (A) Rear handrail (B) Front handrail (C) Ladder assembly (D) Bolts (E) Washers (G) Support assembly |
- Remove handrail (B). Retain the hardware for later use.
- Remove handrail (A). Retain the handrail and the hardware for later use.
- Refer to view "F-F" in Illustration 16. Remove four bolts (D) and four washers (E). Remove the support assembly (G) .
- Use the original hardware and install the 267-1783 Fender As (LH) (24) .
Illustration 17 | g01360182 |
View of left hand rear fender (A) Rear handrail |
- Use the original hardware and install the 272-2787 Handhold As (Front, LH) (25) .
- Use the original hardware and reinstall the original rear handrail (A) .
Install the Tool Box Gp
- Use the following hardware and install the two 267-1702 Console Assemblies (3) onto the frame:
Illustration 18 | g01361025 |
Views of the Tool box gp |
- Use the following hardware and install the 272-2785 Door (5) onto the 272-2776 Tool Box Assembly (4) :
- Use the included hardware and install the 294-2382 Latch As (1) and the 222-5151 Pawl (2) onto the 272-2785 Door (5) .
- Use the following hardware and install the 272-2776 Tool Box Assembly (4) onto the two 278-9587 Console Assemblies (3) .
Install the Ladder Group
- Use the following hardware and install the 303-1459 Ladder As (32) onto the 267-1778 Bracket Assembly (22) :
Illustration 19 | g01360492 |
Inclined ladder group |
- Use the following hardware and install the 306-1643 Step Assembly (34) onto the 303-1459 Ladder As (32) :
- Use the following hardware and install the 302-6793 Arm Assembly (30) onto the 259-3011 Plate (20) :
Illustration 20 | g01360570 |
View of arm assembly |
- Use a 5L-4035 Retaining Ring (46) and install the 254-4152 Cylinder (11) and a 254-4151 Roller (10) onto the 302-6793 Arm Assembly (30) .
- Use a 5L-4035 Retaining Ring (46) and install a 254-4151 Roller (10) onto the other side of the 302-6793 Arm Assembly (30) .
- Slide the 254-4152 Cylinder (11) and the two 254-4151 Rollers (10) into the 303-1459 Ladder As (32) from the bottom.
Illustration 21 | g01360613 |
View of ladder assembly |
- Use the following hardware and fasten the end of the 254-4152 Cylinder (11) onto the 303-1459 Ladder As (32) :
- Use the following hardware and install the two 254-4154 Plates (12) onto the 303-1459 Ladder As (32) :
Illustration 22 | g01360648 |
View of ladder assembly |
- Use the following hardware and install the two 255-7504 Step Belt (67) onto the two 254-4154 Plates (12) :
- Use the following hardware and install the 234-1530 Step As (7) onto the two 255-7504 Step Belts (76) :
- Use the following hardware and install the 267-1778 Bracket As (22) onto the 267-1783 Fender As (24) :
Illustration 23 | g01361218 |
View of ladder assembly |
- Use the following hardware and attach the 259-3011 Plate (20) onto the tool box:
Install the Hose Assembly
- Install the 3V-4791 Grommets (42) into holes that are on both sides of the left fender.
Illustration 24 | g01360706 |
View of ladder assembly |
- Use a 6V-8397 O-Ring Seal (51) and install the 254-5257 Elbow (19) onto the bottom port of the 254-4152 Cylinder (11) .
- Mount the 7I-1024 Guard (68) onto one end of the 224-2312 Hose As (6). Connect the hose onto the 254-5257 Elbow (19). Run the other end of the hose through the 3V-4791 Grommets (42).
- Use the following hardware and install the 302-6795 Cover (31) onto the 303-1459 Ladder As (32) :
Illustration 25 | g01361604 |
View of ladder assembly and fender |
- Preassemble the following parts:
Illustration 26 | g01361492 |
View of assembled block and plate |
- Insert the 254-4189 Block (15) into the opening on the 303-1459 Ladder As (32). Turn the 254-4189 Block within the frame of the ladder. Slide the 254-4189 Block (15) to the top of the opening on the 303-1459 Ladder As (32). Tighten the 8T-4137 Bolt (56) .
Illustration 27 | g01361506 |
View of installation of block |
- Route the 224-2312 Hose As (6) per Illustration 28.
Illustration 28 | g01360817 |
Top view of inclined ladder gp with hose |
- Use the following hardware and secure the 224-2312 Hose As (6) :
- Disconnect the hose from the top of the parking brake actuator.
Illustration 29 | g01360831 |
View of connection to the parking brake actuator |
- Install the 148-8433 Tee As (38) onto the parking brake actuator.
- Reconnect the hose for the parking brake actuator onto the 148-8433 Tee As (38) .
- Use a 3J-1907 O-Ring Seal (41) and install the 143-7685 Special Adapter (37) into the 149-2848 Coupling As (39) .
- Place the ring of the 153-6223 Dust Plug (5) over the 143-7685 Special Adapter (37) and 149-2848 Coupling As (39) .