RING 4737562 - Caterpillar

Remove Implement Hydraulic Pump
Before any hydraulic lines are disconnected from the hydraulic pump, release the pressure in the hydraulic system and drain the hydraulic tank. Start the engine and move the ejector forward all the way. Stop the engine and loosen the cap on the hydraulic tank slowly. Drain the hydraulic tank.
TYPICAL EXAMPLE1. Remove four bolts (3) that hold the inlet tube assembly to the pump.2. Disconnect steering outlet hose assembly (2) from the pump.3. Disconnect outlet hose (1) for the scraper hydraulic circuit.
TYPICAL EXAMPLE4. Fasten a hoist to implement hydraulic pump (5).5. Remove two nuts (4) that hold the pump in position. Remove the pump. The weight of the pump is 120 lb. (54 kg).Install Implement Hydraulic Pump
TYPICAL EXAMPLE1. Fasten a hoist to implement hydraulic pump (1). Make sure the splined drive shaft in the pump is clean and dry before it is in installed in the transfer gear case. Install the pump and two nuts that hold it.
TYPICAL EXAMPLE2. Connect two outlet hose assemblies (2) and (3) to the pump.3. Connect inlet tube assembly (4) to the pump.4. Fill the hydraulic tank with oil to the correct level. See Lubrication and Maintenance Guide.Disassemble Implement Hydraulic Pump
start by:a) remove implement hydraulic pump Make a mark across the cover assembly for correct installation of parts. 1. Remove four bolts (1) from the cover assembly. 2. Make a separation of the cover assembly. 3. Make a note of the direction of the rotation arrow on the front cartridge (2) cam ring. Make a mark to show the direction of rotation on the front cover (4). Remove cartridge (2) from the front cover (4) and shaft (3). 4. Remove one O-ring seal (5) and two ring seals (6) from the front cover. Remove the outer bearing retainer from the front cover and remove the bearing, shaft and washer. 5. Remove retainer (7) from the shaft with tool (A). Remove bearing (8) and washer (9). 6. Remove O-ring seal (10). Remove lip type seal (11) from each side of the front cover. Check the condition of the seals. If the parts have damage, use new parts for replacement. 7. Remove O-ring seal (13) and seal ring (12) from the cartridge. 8. Remove two socket head bolts (16) and make a separation of the cartridge assembly. Make a note of the direction of the rotation arrows on cam ring (15) and rotor (14). 9. Remove two seal and retainer assemblies (17) from each end plate (18). 10. Remove and inspect O-ring seal (19) from each retainer (20). The sharp edge of the vane (22) goes toward the direction of rotation of rotor (14).11. Remove ten vanes (22) and ten vane inserts (21). 12. Make a note of the direction of rotation arrow on the rear cartridge (23) cam ring. Make a mark on the rear cover (26). Remove O-ring seal (24) and seal ring (25) from the rear cartridge. Remove O-ring seal (27) and two ring seals (28) from the rear