PUMP GP-FUEL 2775192 - Caterpillar

Start By:a. Remove the lockup clutch and solenoid valve. Refer to Disassembly and Assembly, "Lockup Clutch and Solenoid Valve (Torque Converter) - 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.
Typical Example1. Remove coil (1) and the cartridge assembly (not shown) from the valve body. Check O-rings for wear or damage and replace if necessary. 2. Remove cover (2) from the valve body. Remove the valve body. Remove the O-ring seal from the cover. 3. Remove body (3) from the valve body. 4. Disassemble body (3) as follows:a. Remove spring (12), orifice (11) and O-ring seal (10) from the body.b. Remove inner and outer springs (8), shims (7) and inner and outer pistons (6) from the body.c. Remove plug (9) and the O-ring seal from the body.d. Remove cover (4) and O-ring seal (5) from the body. 5. Remove spool (16) and stop (17) from the valve body. Remove slug (15) from the spool.6. Remove plug (13) and spring (14) from the valve body 7. Use Tooling (A) to remove the retaining ring from spool (16).8. Remove retainer (20), spring (19) and ball (18) from spool (16). 9. Remove plug (22) and valve (21) from the valve body. 10. Remove cover (23) and spring (26) from the valve body. Remove O-ring seal (25) and shims (24) from the cover.11. Remove plug (29) and spool (27) from the valve body. Remove slug (28) from the spool. 12. Use Tooling (A) to remove the retaining ring from spool (27). 13. Remove retainer (32), spring (31) and ball (30) from spool (27). 14. Remove nipple assembly (34) and dust cap (35) from the valve body. As necessary, remove other plugs (33) and the seals to replace the seals.