1. INSPECT OIL PUMP DRIVEN ROTOR BODY CLEARANCE

(a) Install the drive rotor and driven rotor to the rear extension housing.

(b) Using a feeler gauge, measure the body clearance between the drive rotor and extension housing.

Standard clearance:

0.08 to 0.17 mm (0.0031 to 0.0067 in.)

Maximum clearance:

0.17 mm (0.0067 in.)

If the body clearance is greater than the maximum, replace the drive rotor and drive rotor.

2. INSPECT OIL PUMP DRIVE ROTOR TIP CLEARANCE

(a) Using a feeler gauge, measure the tip clearance between the drive rotor and driven rotor.

Standard clearance:

0.05 to 0.15 mm (0.0020 to 0.0059 in.)

Maximum clearance:

0.15 mm (0.0059 in.)

If the tip clearance is greater than the maximum, replace the drive rotor and driven rotor.

3. INSPECT OIL PUMP SIDE CLEARANCE

(a) Using a steel straightedge and feeler gauge, measure the side clearance of the oil pump.

Standard clearance:

0.03 to 0.10 mm (0.0012 to 0.0039 in.)

Maximum clearance:

0.10 mm (0.0039 in.)

If the side clearance is greater than the maximum, replace the drive rotor and driven rotor.