2.1.14 Oil pump
Oil pump (33, 44 and 49 engines)
Backlash between gears when crankshaft lies firmly
against the lower side of the main bearings:
• crankshaft gear-lubricating oil pump gear
0.05 - 0.25 mm
• between the pump gears
0.16 - 0.26 mm
Diameter of drive shaft at bearings for body and
cover
17.966 - 17.984 mm
Diameter of shaft holes on body and cover 18.000 - 18.018 mm
Diameter of gear wheel hole 18.060 - 18.078 mm
Fixed shaft, diameter 18.028 - 18.039 mm
Protrusion of fixed shaft end below pump body face 0.5 - 1.0 mm
Thickness of cover gasket 0.06 - 0.08 mm
Outside diameter of gear 43.486 - 43.525 mm
Housing diameter 43.650 - 43.750 mm
Thickness of gears 24.000 - 24.027 mm
End play of gears 0.03 - 0.11 mm
Depth of housing 24.000 - 24.043 mm
Oil pump (66 and 74 engines)
Backlash between gears when crankshaft lies firmly
against the lower side of the main bearings:
• crankshaft gear-lubricating oil pump gear
0.05 - 0.25 mm
• between the pump gears
0.16 - 0.26 mm
Diameter of drive shaft at bearings for body and
cover
17.966 - 17.984 mm
Diameter of drive shaft bearing hole on body and
cover
18.000 - 18.018 mm
Inner diameter of bearing for gear wheel which
rotates on fixed shaft
18.000 - 18.018 mm
Diameter of fixed shaft at gear wheel 17.966 - 17.984 mm
Fixed shaft in pump body, diameter 20.035 - 20.048 mm
Protrusion of fixed shaft end below pump body face 0.5 mm
Thickness of cover gasket 0.06 - 0.08 mm
Outer diameter of gear wheels 55.824 - 55.870 mm
Housing diameter 56.000 - 56.120 mm
2. Specifications
4th Generation Engines 2-17
8370 79492
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