Oil Pump

DISASSEMBLE
(1) Remove the relief valve as follows:
(a) Remove cotter pin. Drill a 3.175 mm (1/8 inch) hole into the relief valve retainer cap and insert a self-threading sheet metal screw.





Fig. 86

(b) Clamp screw into a vise and while supporting oil pump, remove cap by tapping pump body using a soft hammer. Discard retainer cap and remove spring and relief valve (Fig. 86).





Fig. 87

(2) Remove oil pump cover (Fig. 87).
(3) Remove pump outer rotor and inner rotor with shaft (Fig. 87).
(4) Wash all parts in a suitable solvent and inspect carefully for damage or wear.

ASSEMBLE
(1) Install pump rotors and shaft, using new parts as required.
(2) Position the oil pump cover onto the pump body. Tighten cover bolts to 11 Nm (95 in. lbs.) torque.
(3) Install the relief valve and spring. Insert the cotter pin.
(4) Tap on a new retainer cap.
(5) Prime oil pump before installation by filling rotor cavity with engine oil.