Oil Pump Inspection & Service

Fig. 43 Oil pump, disassembled:

1. Disassemble pump as shown in Fig. 43.
2. Inspect all parts for any signs of abnormal wear or damage.
3. Measure outside diameter of pulley flange. Diameter should be 1.1-1.1035 inch (27.94-28.03 mm).

Fig. 44 Measuring vane and cylinder clearance in direction of thrust:

4. Using a straightedge and feeler gauge, check clearance between vane and cylinder body in direction of thrust, Fig. 44. Clearance should be .0011-.0027 inch (.03-.07 mm).

Fig. 45 Measuring vane and cylinder body clearance:

5. Check clearance between vane and cylinder body, Fig. 45. Clearance should be .0094-0141 inch (.24-.36 mm).

Fig. 46 Measuring vane and rotor clearance:

6. Check clearance between vane and rotor, Fig. 46. Clearance should be .0051-.0059 (.13-.15 mm).

Fig. 43 Oil pump, disassembled:

7. Reassemble as shown in Fig. 43.