HYDRAULIC AR 3W3721 - Caterpillar

2. Remove cover (23) and spring (26) from the valve body. Remove O-ring seal (25) and shims (24) from the cover.3. Remove plug (29) and spool (27) from the valve body. Remove slug (28) from the spool. If necessary, repeat Steps 7 and 8 to disassemble spool (27). 4. Remove plug (22) and valve (21) from the valve body. 5. Remove retainer (20), spring (19) and ball (18) from spool (16). 6. Use Tooling (A) to remove the retaining ring from spool (16). 7. Remove spool (16) and stop (17) from the valve body. Remove slug (15) from the spool.8. Remove plug (13) and spring (14) from the valve body. 9. 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. 10. Remove body (3) from the valve body. 11. Remove cover (2) from the valve body. Remove the valve body. Remove the O-ring seal from the cover. 12. Remove coil (1) and the cartridge assembly (not shown) from the valve body. Check the O-ring seals for wear or damage and replace if necessary. Clean all parts thoroughly. Put a thin coat of clean oil on them before assembly. To determine the correct amount of shims (24), refer to the topic Lockup Clutch Tests in Power Train, Systems Operation, Testing and Adjusting, for the machine that is being serviced! 13. Tighten the bolts on cover (23) to a torque of 30 7 N*m (22 5 lb ft)14. Tighten the coil nut to a torque of 5 0.5 N*m (45 5 lb inch). End By:a. Install lockup clutch valve. Refer to Disassembly and Assembly, "Torque Converter Lockup Clutch Valve - Install" for the machine that is being serviced.