CRANKSHAFT 5S6431 - Caterpillar

To prevent possible personal injury, release all the pressure from the hydraulic system before any lines are disconnected.
1. Remove bolts (1) and swing access panel (2) back. 2. Disconnect and plug three hoses (3). 3. Remove one bolt (4) and swing access panel (5) back. 4. Remove four bolts (6) and remove hand metering unit (7). These steps are for the installation of the hand metering pump.3. Put hand metering pump (7) in position with bolts (6). Connect hoses (3) to the hand metering pump.4. Close access panel (2) and (5) and install bolts (1) and (4).Disassemble Hand Metering Pump
Start By:a. remove hand metering pump 1. Remove bolts (1) and adapter (2) from pump (3). 2. Put identification marks on all parts for correct assembly.3. Remove fittings (4), check valve (6) and plug (5) from the pump body. 4. Remove bolts (8) that hold cap (7) and the gerotor to pump body (3). 5. Remove cover (7), gerotor (11), drive (10) and spacer (9) from pump body (3).6. Remove O-ring seals (12) and (13) from pump body (3), gerotor (11) and cover (7). 7. Remove sleeve (14) from pump body (3). 8. Remove pin (17) and spool (15) from sleeve (14).9. Remove springs (16) from spool (15). 10. Remove ring (18), bushing (19), O-ring seal (20), race (21), bearing (22) and race (23) from pump body (3). 11. Remove seals (24) and (25) from bushing (19). 12. Remove plug (26) from the pump body. 13. Use a 10-32 screw (27) to remove seat (28). Remove ball (30) and retainer (29) from the pump body.14. Remove O-ring seals (31) from seat (28).Assemble Hand Metering Pump
1. Inspect and make replacement of all parts of the hand metering pump that are worn or damaged. 2. Install O-ring seals (3) on seat (2).3. Install the retainer and the ball. Use a 10-32 screw (1) to install seat (2) in pump body (4).4. Install the plug in pump body (4) to a torque of 11.3 N m (100 lb in). Make sure the plug is even with or below the pump body surface after it is tightened. 5. Use tool group (A), and install lip-type seal (5) in bushing (7). Make sure the lip of the seal is toward the inside of the pump as shown.6. Install seal (6) in bushing (7). 7. Install six spring (9) in spool (8) with three springs on each side. Make sure the curves of the springs are in contact and in the center of the spool. 8. Install spool (8) in sleeve (10). Make sure the ends of springs (9) are engaged in the notch (slot) of sleeve (10).9. Install pin (11) in the sleeve and the spool. 10. Install sleeve (10) in pump body (4) as shown. 11.