TUBE ASSEM. (L.H.) 6S4642 - Caterpillar

Illustration 1 g01577633
(4) O-ring seal
Before operating the engine, the oil pump must be lubricated with clean engine oil. The oil pump must turn freely by hand. Damage to the drive gear and internal pump damage can occur if the oil pump is not lubricated with clean engine oil.
Oil type ... SAE 30Oil temperature ... 50 °C (122 °F)Pump speed ... 3000 rpmOil pressure ... 359 kPa (52 psi)Minimum oil flow ... 185 L/min (49 US gpm) (1) Gear Length of the new gear ... 50.000 0.025 mm (1.9685 0.0010 inch)Depth of bore in oil pump body for the gear ... 50.13 mm (1.974 inch)Note: Gears may be heated to a maximum temperature of 316 °C (601 °F) for installation in the shaft. (2) Oil pump shaft assembly Diameter of the shaft ... 18.000 0.005 mm (0.7087 0.0002 inch)Bore in oil pump body for the shaft ... 18.050 0.010 mm (0.7106 0.0004 inch) (3) Oil pump drive gear may be heated to a maximum temperature of 316 °C (601 °F) for installation in the shaft.