OIL PUMP INSPECTION

1. Measure the clearance between the inner rotor and the outer rotor using a feeler gauge.

• If it exceeds the maximum specification, replace the inner rotor or outer rotor, or both.

Standard tip clearance

0.02-0.18 mm {0.0008-0.0070 in}

Maximum tip clearance

0.20 mm {0.0078 in}

2. Measure the clearance between the outer rotor and the body using a feeler gauge.

• If it exceeds the maximum specification, replace the outer rotor or oil pump, or both.

Standard body clearance

0.09-0.175 mm {0.0036-0.0068 in}

Maximum body clearance

0.20 mm {0.0078 in}

3. Measure the side clearance using a straight edge and feeler gauge.

• If it exceeds the specification, replace the inner rotor, outer rotor, oil pump, or all of them.

Standard side clearance

0.03-0.07 mm {0.0012-0.0027 in}

Maximum side clearance

0.09 mm {0.0035 in}

4. Measure the free length of the plunger spring using a vernier caliper.

• If it is less than the specification, replace the plunger spring.

Free length

45.94 mm {1.8087 in}