PLATE-REACTION 2P5725 - Caterpillar

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.
1. Remove four bolts (2) that hold inlet tube assembly to the pump.2. Disconnect steering outlet hose assembly (1) from the pump.3. Disconnect outlet hose (3) from the scraper hydraulic circuit. 4. Fasten straps and a hoist to the implement hydraulic pump (4). Remove the nuts that hold the implement hydraulic pump. The following steps are for the installation of the implement hydraulic pump.5. Put the implement hydraulic pump (4) in position with the nuts that hold it.6. Connect outlet hose (3) to the scraper hydraulic circuit.7. Connect steering outlet hose assembly (1) from the pump.8. Install bolts (2) that hold inlet tube assembly to the pump.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 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 cover.13. Disassemble the rear cartridge assembly (23) as in Steps 8 through 11.Assemble Implement Hydraulic Pump
1. Install O-ring seal (10) in the front cover. Install small lip type seal (11) in the cover with tooling (A). Install the seal with the lip