SEAT GP 1640504 - Caterpillar

Start By:a. remove implement pump 1. Remove fitting (3) from valve block (1).2. Remove bolts (2) and remove valve block (1) from pump body (4). Remove the bias cylinder from the spring in the pump body. Remove the gasket from the pump body. 3. Remove stem (5), stem (6), pin (7) and check valve assembly (8) from the valve block (1). 4. Remove spring (10), water plate (9) and control cylinder (11). 5. Remove bearing assembly (12). Remove the spacers under bearing assembly (12). 6. Remove cylinder block (13) from shaft (14).
The spring located within the cylinder block is under high compression and can cause bodily harm, if caution is not used, if or when the retaining ring is removed.
7. Carefully compress the spring with a press, and remove the retaining ring (15) with tool (B). 8. Remove spring washer (16), spring (17) and spring washer (18) from cylinder block (13). 9. Remove bolts (19) and cover (20) from pump body (4). 10. Remove key lock (21). 11. Remove piston and shoe assembly (22) from the pump body (4).12. Remove bolts (23) and cover (24). 13. Remove O-ring seal (25), bearing spacer (26) and bearing (27).14. Remove the O-ring seal, the bearing spacer and the bearing from the opposite side. 15. Remove shaft (14), swashplate (28) and the yoke and bumper assembly from the pump housing. Remove the bearing race from each side of pump body (4). 16. Remove bearing assembly (29). 17. Remove bearing race (30) and inner lip seal (31). 18. Remove outer lip seal (32).Assemble Hydraulic Pump
If new swashplate or bearings are installed, refer to topic, Hydraulic Pump/Swashplate Bearing in Specifications, Form No. SENR3488. If shaft, shaft bearing, head or housing is replaced refer to topic, Hydraulic Pump/Shaft Bearing Endplay in Specifications, Form No. SENR3488. 1. Install the inner and outer seals in the pump housing with tool group (A). 2. Lower the temperature of bearing race (30) and install it in pump housing (4).3. Install bearing assembly (29).4. Install the yoke and bumper assembly in the pump housing. 5. Follow the procedures below to provide the proper preload on the bearings.6. Lower the temperature of the bearing race, and install it in the pump housing. Install bearing (27) and bearing spacer (26). Do not install the O-ring seal at this time. 7. Install cover (20) and tighten bolts (19) to a torque of 15 to 17 N m (11 to 13 lb.ft.). 8. Turn the pump housing over. Lower the temperature of the bearing race, and install it in the pump housing. Install bearing (27) and bearing spacer (26). Do not install the O-ring seal at this time. 9. Rotate the yoke assembly back and forth to seat the bearings.10. Measure the distance between the spacer and housing with a depth micrometer as shown. 11. Install the proper shim (33) to have a 0.25 to 0.40 mm (0.010 to 0.016 in.) axial preload. Install bearing spacer (26), O-ring seal, cover and bolts. Tighten the