SEAL AS 1173269 - Caterpillar

Illustration 36 g00743040
Illustration 37 g00743041
Install return spring (19) and guide pin (20). Use Tooling (B) in order to compress the spring. Compress the spring until guide pin (20) is in a position that allows you to install piston locking pin (21) .
Release the tension on the spring by unscrewing Tooling (B) .
Repeat Step 20 and Step 21 until all six of the following items have been installed: return springs, guide pins and locking pins .
Illustration 38 g00743045
Install the following items to brake disc housing (13) : O-ring seals (25), plugs (26), O-ring seals (22), adapters (23) and bleeder screws (24) .
Illustration 39 g00743046
Connect a suitable pressure gauge and relief valve to the supply port for the parking brake. Connect Tooling (C). Use Tooling (C) in order to pressurize the port to a pressure of 4140 kPa (600 psi). Turn off the tap and check the pressure gauge for leakage.Note: Do not exceed 4140 kPa (600 psi).Note: If a drop in pressure is noticed, the seal for the parking brake should be checked.
Illustration 40 g00743048
With the service brake piston in the fully released position, install ten outer plates (27), and nine friction plates (28) in alternating order. Start with an outer plate and end with an outer plate. Lubricate the plates with clean oil when you are installing the plates .Note: When all plates are installed the plates should sit below the level of the splines in brake disc housing (13). If this is not the case then the pressure in the parking brake port should be checked.
Illustration 41 g00743049
Install O-ring (30) on spindle (29) .
Do not install spindle (29) without fitting retaining studs and special nuts (32) .
Illustration 42 g00743050
Obtain two 1/2 inch - 16 x 6 guide pins. Install two guide pins (31) to the brake disc housing .
Install four special nuts (32) to spindle (29) .
Use a suitable lifting device in order to lower spindle (29) in position, as shown.
Evenly tighten special nuts (32) to a torque value of 120 10 N m (90 7 lb ft).
Remove two guide pins (31) .
Illustration 43 g00743051
Apply 155-0695 Thread Lock Compound to the threads of bolt (33) prior to assembly. Install 30 bolts (33) and the washers. Tighten the bolts to a torque value of 135 15 N m (100 10 lb ft).
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Rotate the brake assembly so that anchor (1) is facing upward.
Install the O-ring seals to six plugs (34). Install the six plugs, as shown.
Illustration 45 g00743053
Install Tooling (D) in order to align the nine friction discs. Release the oil pressure from the parking brake. Remove Tooling (C) and the pressure gauge. Remove Tooling (D) .
Illustration 46 g00743054
Install spacer (35), bearing (36) and Duo-cone seal (37) .End By:a. Install the brake assembly to the wheel assembly. Refer to Disassembly and Assembly, RENR4575 (9EL3671), "R2900 L.H.D. Power Train".b. Install the wheel assembly and the brake assembly to