SEAL 3879854 - Caterpillar

Assembly Procedure
Table 1
Required Tools    
Tool     Part Number     Part Description     Qty    
A     -     Loctite 242 Thread locker     1    Note: Cleanliness is an important factor. Before the disassembly procedure, clean the exterior of the component thoroughly. Cleaning will help to prevent dirt from entering the internal mechanism.
Illustration 1 g03028262
Improper assembly of parts that are spring loaded can cause bodily injury.To prevent possible injury, follow the established assembly procedure and wear protective equipment.
Install fitting (10) . Tighten fitting (10) to a torque of 14 4 N m (124 35 lb in). Install spool assembly (8) and spring (9) .
Illustration 2 g01619331
Install O-ring seals (7) . Lightly lubricate seals (7) with lubricant being sealed.
Illustration 3 g01619329
Personal injury can result from being struck by parts propelled by a released spring force.Make sure to wear all necessary protective equipment.Follow the recommended procedure and use all recommended tooling to release the spring force.
Install cartridge assembly (5) into valve body (6) . Tighten cartridge assembly (5) to a torque of 50 5 N m (37 4 lb ft).
Illustration 4 g03028291
Install coil assembly (4) and apply Tooling (A) to the threads of cartridge assembly (5) . Install nut (3) . Tighten nut (3) to a torque of 10 1.5 N m (89 13 lb in).
Illustration 5 g01619327
Install seal (2) into modulating valve (1) .End By: Install the modulating valve. Refer to Disassembly and Assembly , "Modulating Valve (Torque Converter Lockup Clutch) - Install ".