Oil Pump Disassemble and Assemble

Fig. 14 Disassembled View Of Oil Pump:

DISASSEMBLE
1. Remove five screws and rear cover from oil pump Fig. 13.
2. Remove gears, plug, pressure regulator valve plunger and spring.
3. If necessary, remove pickup tube and O-ring from oil pump body.

Fig. 15 Checking Drive Gear To Oil Pump Housing Clearance:

INSPECTION
After disassembling the oil pump, thoroughly clean all oil pump components and check them for excessive wear and damage.
1. Using a suitable straight edge and feeler gauge, Fig. 15, check oil pump clearances.
2. Check clearances for the following oil pump components:
a. Clearance between idler gear and oil pump body should be .004-.007 inch.
b. Clearance between drive gear and oil pump body should be .014-.018 inch.
c. End clearance should be .001-.004 inch.
3. If clearances obtained are not within specified limits, replace worn or damaged oil pump components.

ASSEMBLE
1. Install valve plunger and spring.
2. Using a suitable sealer, coat threads of pressure regulator valve plunger plug and install. Torque plug and attaching bolts to specifications.
3. Install oil pump gears into oil pump body.