SEAL, DUST 0931378 - Caterpillar

Start By:a. Remove the transmission hydraulic control. Refer to Disassembly and Assembly, "Transmission Hydraulic Control - Remove" for the machine that is being serviced. Cleanliness is an important factor. Before the disassembly procedure, the exterior of the component should be thoroughly cleaned. This will help to prevent dirt from entering the internal mechanism. 1. Remove six O-ring seals (1) from switch manifold (2).2. Put identification marks on coil assemblies (3) for correct installation. Remove nuts (4) and remove coil assemblies (3) from the cartridge assemblies.3. Remove plug (5) from the switch manifold and remove the O-ring seals from the plug. 4. Remove cartridge assemblies (6) from the switch manifold. 5. Remove O-ring seals (7) and back-up rings (8) from each of the cartridge assemblies. 6. Remove two bolts (9), the cover and wire harness (10) from the switch manifold. 7. Remove lip seal (11) from the switch manifold. 8. Use Tooling (A) to remove bearing (12) from the switch manifold. 9. Remove two plugs (14) from pressure control valve (13). Remove the O-ring seal from each plug. The pressure control valve for each clutch is identified on the pressure control valve body by a letter at location (15) on the valve body.
Do not at any time mix the components between valve groups during disassembly or assembly.
Valve group (A) is for clutch No. 3 Valve Group (B) for clutch No. 1. Valve group (C) is for clutch No. 2. Valve group (E) is for clutch No. 5. Valve group (F) is for clutch No. 4. Valve group (G) is for clutch No. 6. Valve group (H) is for clutch No. 7.10. Use the following procedure to disassemble the valve groups:a. Remove two screws (28) and body (26) from the valve body.b. Remove two springs (20), shims (21) and two pistons (22) from body (26). There is no center plug (27) on valve group (H).c. Remove springs (23), orifice (24), O-ring seal (25) and three plugs (27) from body (26).d. Remove stop (19), spool (18) and spring (16) from the valve body.e. Remove slug (17) from spool (18). 11. Use the following procedure to disassemble spools (18) from the valve groups:a. Use