MIRROR GP 2790467 - Caterpillar

Remove Oil Pump
start by:a) remove fuel transfer pump1. Drain the coolant from the cooling system.2. Drain the oil from the oil pan. 3. Remove fuel lines (1) and bracket (2) from the engine. 4. Remove bolts (3) and (5) to remove adapter (4) and tube (6) from the engine. 5. Remove bolts (7) to disconnect elbow (8) from the oil pump. 6. Remove bolts (9) to remove oil pump (10) and adapter (11) from the oil pump drive. The weight of the oil pump is 39 kg (85 lb.).Install Oil Pump
1. Make sure the O-ring seals are in position on adapters (3), (4) and elbow (2). Put clean engine oil on the seals. The oil pump shaft must turn by hand and the pump must have oil for lubrication before it is installed.2. Put oil pump (1) and adapter (4) in position in the oil pump drive. Make sure the splines of the oil pump are correctly engaged with the splines of the oil pump drive. Install the bolts that hold oil pump (1) and adapter (4) in position. 3. Install the bolts that connect elbow (2) to oil pump (1). 4. Make sure O-ring seal (9) is in position on tube (8) and put clean engine oil on the seal.5. Put tube (8) and adapter (6) with the gaskets for tube (5) and water pump (7) in position and install the bolts. 6. Install fuel lines (10) and bracket (11) on the engine.7. Fill the engine with oil to the correct level.8. Fill the cooling system with coolant to the correct level.end by:a) install fuel transfer pumpDisassemble Oil Pump
start by:a) remove oil pump 1. Remove adapter assembly (1) from the pump.
Cover (2) has spring tension on it. Loosen the bolts that hold it slowly and the same amount to remove the tension on the cover.
2. Remove the bolts, cover (2), gasket (3), spring (4) and valve spool (5) from the pump. 3. Remove cover assembly (6) and the gasket from the pump. 4. Remove cover assembly (7) from the pump. 5. Use tooling (A) to remove bearings (8) from cover assembly (7). 6. Remove shaft assemblies (10) from body assembly (9). 7. Use a press to remove gears (11) from the shaft assemblies. 8. Use tooling (A) to remove bearings (12) from body assembly (9).Assemble Oil Pump
1. Make an alignment of bearings (1) so the joints are .45 15° from a line through the center of the bearing bores as shown.2. Use tooling (A) to install bearings (1) in the body assembly until they are 1.5 0.5 mm (.059 .020 in.) below the gear bore in the body assembly. Check the inside diameter of the bearings after installation. The diameter must be 31.837 0.070 mm (1.2534 .0028 in.). 3. Heat gears (2) to a maximum temperature of 316°C (600°F). 4. Install the gears on shaft assemblies (3) until they are 34.0 0.5 mm (1.34 .020 in.) from the cover end