Usage:
| NOTICE |
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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 Tools And Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products. Dispose of all fluids according to local regulations and mandates |
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Personal injury can result from hot oil or hot components. At operating temperature, oil is hot and under pressure. Hot oil can cause burns. Remove the fill cap only when the engine is stopped, and the fill cap is cool enough to touch with your bare hand. Do not allow hot oil or components to contact skin. |
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NOTE: Cleanliness is an important factor. Before the removal procedure, the exterior of the component should be thoroughly cleaned. This will prevent dirt from entering the internal mechanism.
NOTE: Put identification marks on all hose assemblies and all tube assemblies for correct installation purposes. Plug all hose assemblies and tube assemblies. This helps to prevent fluid loss and this helps to prevent contaminants from entering the system.
1. Drain the hydraulic oil from the steering system.
Illustration 1
Rod end of cylinder
Illustration 2
Head end of cylinder
Illustration 3
Rod end of cylinder
2. Disconnect lubrication hose (1) from plug (2) at each end of steering cylinder (4).
3. Disconnect hose assembly (3) from each end of steering cylinder (4).
Illustration 4
4. Use a screwdriver in order to remove retaining ring (5) and plug (2) at each end of steering cylinder (4).
Illustration 5
5. Install tooling (A) in order to hold ballstud (6) while locknut (7) is being loosened.
Illustration 6
Shown for photo purposes
6. Use tooling (B) to remove locknut (7). Remove locknut (7).
Illustration 7
Illustration 8
7. Use Tooling (C) to remove the ball stud. Refer to M0080743, Tool Operating Manual, Ball Stud Breaker, for the correct procedure to remove the ball stud. Repeat this step for the remaining steering link ball studs.
8. Use Tooling (D) to support the weight of steering cylinder (4). The weight of steering cylinder (4) is approximately 144 kg (318 lb).
9. Remove steering cylinder (4).
10. Repeat Steps 1 through 9 to remove the remaining steering cylinders.
11. Use a suitable press to remove spherical bearing race (10) and ballstud (6) at each end of the steering cylinder (4).
12. Remove retaining ring (9) that holds spherical bearing race (10) to each ballstud (6). Remove spherical bearing race (10) from each ballstud.
13. Repeat Steps 11 and 12 for the remaining steering cylinder.
Disassemble Steering Cylinders
Start By:
a. remove steering cylinders
1. Put the cylinder into position on Tooling (A).
2. Install support (3) under the rod, and fasten strap (2) to hold the rod on the support.
3. Remove four bolts (1) and washers from the head. Remove the rod and the head from the cylinder.
4. Remove the nut from the rod with tooling (B).
5. Remove piston (4) from the rod.
6. Remove wear ring (5) and seal assembly (6) from the piston. Inspect the seals and ring, and make replacement as needed.
7. Install two 7/8" - 9 NC bolts through the head and in the cylinder. Move the rod out of head (7).
8. Remove head (7) and the bolts from the cylinder.
9. Remove O-ring seal and back-up ring (8) from outside of the head. Inspect the seal and ring, and make replacements as needed.
10. Remove seals (9), (10), and (11) from inside the head. Remove wear ring (12) from the head. Make replacements as needed.
Assemble Steering Cylinders
1. Install seal (9) and seal (10) in the head with tool (D). Install seal (10) with the lip toward the inside of the cylinder. Install the seal (11) with tooling (C). The lip of seal (11) must be toward the outside when installed. Install wear ring (12).
2. Install O-ring seal and back-up ring (8) on the outside of the head with the back-up ring toward the outside (bolt flange part of head). Put head (7) into position on the cylinder. Install 7/8" -9 NC bolts to hold the head in place.
3. Put clean SAE 10W oil on the seals in the head. Make sure the rod is in alignment with the head before the rod is installed. Install tool (E), and slowly push the rod through the head. Remove the bolts, and move the head back from the cylinder. Remove tool (E) from the rod.
4. Install seal assembly (6) and wear ring (5) on piston (4).
5. Install piston (4) and the nut on the rod.
6. Install tooling (B), and tighten the nut to a torque of 2700 ± 270 N·m (1990 ± 200 lb ft).
7. Remove tooling (B), and install the piston into the cylinder.
| NOTICE |
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The rod must be fully extended when the lockwashers and bolts are tightened in the head. This will keep the cylinder, piston and head in better alignment. |
8. Put the head into position on the cylinder, and install four bolts (1) and washers.
9. Remove the cylinder from tool (A).
End By:
a. install steering cylinders