Assembling Oil Pump

Oil pump is assembled in reverse order of disassembly. Do not mix gears and keys - return to correct location. Oil pump gaskets should always be replaced. Use only "factory made" gaskets. Lock rings are often damaged when removing them. It is advisable to install a new lock ring when assembling pump. Make sure ring is engaged and seated in retaining groove.

Bolts and nuts must be drawn down evenly to approximately 50 inch-pounds, but no more than 60 inch-pounds torque (four to five foot-pounds).

This is important because the oil pump cover gasket and body gasket are made from plastic material. If overtightened, the plastic material will be squeezed out of place and eliminate pump gear side clearance which may seize and damage the pump parts.

If a leakage problem exists, disassemble pump and inspect all gasket surfaces making sure they are flat and smooth. Install new gaskets and reassemble pump, tightening four bolts and two nuts evenly to 50 inch-pounds torque.

On late models, oil hose connections have one piece band type clamps and must be replaced each time hoses are connected. Use Hose Clamp Tool Part No. 97087-65 to squeeze clamps tight as shown in Fig. 3D-1C.

Figure 3D-1. Oil Pump - Exploded View (1967 and Earlier)

Figure 3D- 1A Oil Pump - Exploded View (1968 and Later)

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