Service Manual

12
6
LUBRICATION SYSTEM
6. Remove injector pump timing gear with a three
jaw puller, Fig. 11.
a. Remove 2 nuts and injector pump. Discard
O-ring.
Fig. 11 – Removing Injector Pump
O–RING
7. Remove parts in sequence shown, Fig. 12.
a. Remove 3 screws and camshaft retainer.
b. Remove remaining 5 screws.
c. Remove timing gear case and discard gasket.
Fig. 12 – Removing Timing Gear Case
A
B
B
8. Inspect rotors for wear or damage, Fig. 13.
NOTE: If pump rotors are worn or damaged,
replace the gear case.
Fig. 13 – Inspect Rotors
OIL PUMP
ROTORS
9. Remove and check pressure relief valve
assembly, Fig. 14.
a. Make sure plunger has no nicks or burrs.
b. Check pressure relief valve spring free length.
10. Spring free length: 35.5 mm ± (1.400” ± .040”)
Fig. 14 – Checking Pressure Relief Valve
SCREW
SPRING
WASHER
PLUNGER