OIL PUMP INSPECTION

1. Measure the clearance between the end of the oil pump housing and the outer rotor and inner rotor at four places along their circumferences.

• If not as specified, replace the oil pump.

Clearance

Standard: 0.02-0.04 mm {0.0008-0.0015 in}

Maximum: 0.05 mm {0.0019 in}

2. Measure the clearance between the oil pump boss and the inner rotor.

• If not within the specification, replace the oil pump.

Oil clearance

Standard: 0.040-0.115 mm {0.00157-0.00453 in}

Maximum: 0.125 mm {0.00492 in}

3. Measure the spring free length.

• If not as specified, replace the oil pump.

Specification

Outer diameter (mm {in})	Free length (mm {in})	No. of coils	Wire diameter (mm {in})
13.0 {0.512}	53.0 {2.09}	12.0	1.2 {0.047}

4. Measure the spool and inspect for wear.

• If not as specified, replace the oil pump.

Outer diameter

Standard: 13.970-13.980 mm {0.5500-0.5503 in}

Minimum: 13.970 mm {0.5500 in}