CAB A 9W0026 - Caterpillar

1. Drain the coolant from the cooling system.
Typical Example2. Remove fuel transfer pump (3). See the topic, Remove And Install Fuel Transfer Pump.3. Disconnect wire harness (4).4. Loosen the hose clamp that holds the hose in position on elbow (5). Move the hose away from the elbow.5. Remove the bolts, and remove water line adapter (1) and tube (2) from the engine. 6. Remove the bolts, and remove elbow (7) from the top of the oil pump and tube (6).7. Remove the bolts, and disconnect elbow (8) from the bottom of the oil pump. 8. Fasten a hoist and tooling (A) to oil pump (9). Remove the bolts, and remove oil pump (9) from the pump drive. The weight of the oil pump is 39 kg (86 lb).9. Remove O-ring seal (10) from the pump drive. The following steps are for installation of the oil pump.
The oil pump must turn freely by hand, and the pump must have oil for lubrication before it is installed.
10. Put O-ring seal (10) in position on the pump drive. Put clean engine oil on the O-ring seal.11. Fasten a hoist and tooling (A) to oil pump (9). Align the splines on the oil pump shaft with the splines in the oil pump drive. Install the oil pump.12. Install the bolts to connect elbow (8) to the oil pump.13. Put elbow (7) in position on tube (6) and the top of the oil pump. Install the bolts to hold it in place.14. Make sure the O-ring seal is in position on the end of tube (2). Put clean oil on the O-ring seal. Put the gasket, water line adapter (1) and tube (2) in position, and install the bolts that hold it.15. Put the hose in position on elbow (5), and tighten the clamps that hold it.16. Connect wire harness (4).17. Install fuel transfer pump (3). See the topic, Remove And Install Fuel Transfer Pump.18. Fill the cooling system with coolant to the correct level. See the Maintenance Manual.Disassemble And Assemble Oil Pump
Start By:a. remove oil pump
Cover (2) has spring tension under it. To prevent personal injury, loosen bolts (1) slowly and evenly to remove the tension under the cover.
1. Remove bolts (1), cover (2), gasket (3), spring (4) and valve spool (5) from the pump body. 2. Remove cover assembly (6) and the gasket from the pump body. 3. Remove cover assembly (7) from the pump body. 4. Use tooling (A) to remove bearings (8) from cover assembly (7). 5. Remove shaft assemblies (10) from body assembly (9). 6. Use a press to remove gears (11) from the shaft assemblies. 7. Use tooling (A) to remove bearings (12) from body assembly (9). The following steps are for assembly of the oil pump. 8. Make an alignment of bearings (12) so that the joints are 45 15° from a line through the center of the bearing bores as shown.9. Use tooling (A) to install bearing (12) in the body assembly until they