FILTER GP-OIL 1013834 - Caterpillar

1. Disconnect hose (3) from the rear of pressure reducing valve group (1).2. Disconnect two hoses (4) from the bottom side of the valve group. Mark all hoses for correct location during installation of valve group.3. Remove two bolts (2) and set aside pressure reducing valve group (1). Inspect the O-ring seals. If necessary, install new seals. For installation of the pressure reducing valve mounting group, reverse the removal steps.Disassemble Pressure Reducing Valve
Start By:a. remove pressure reducing valve 1. Remove the large nut (1) from the body of the pressure reducing valve. 2. Remove check ball (2) and spring assembly (3) from the valve body. 3. Remove ends (4) and (5) from the spring. 4. Remove valve spool (6) and spring (7) from the valve body. 5. Remove the threaded insert (8) and fitting (9) from the valve body. 6. Remove valve (10). Remove and inspect O-ring seals and back-up rings (11).Assemble Pressure Reducing Valve
7. Install back-up rings and O-ring seals (11) on valve (10). 8. Install fitting (9) and threaded insert (8) in the valve body. 9. Install spring (7) and valve spool (6) in the valve body. 10. Install ends (4) and (5) in the spring. 11. Install spring assembly (3) and check ball (2) in the valve body. 12. Install large nut (1) on the body of the pressure reducing valve.End By:a. install pressure reducing valve