Oil Pump: Service and Repair

REMOVAL

Fig. 19 Oil pump clearance check locations:

NOTE: Oil pan must be removed prior to removing oil pump.


1. Remove timing belt. Refer to TIMING BELT & COVER.
2. Remove timing belt tensioner and crankshaft sprocket.
3. Remove oil pump assembly attaching bolts, then the oil pump.
4. Remove oil seal from oil pump housing.

INSPECTION

1. Check oil pump case for cracks and damage.
2. Using a suitable feeler gauge, measure the following clearances as follows:
a. Body 0.004-0.007 inch (0.10-0.18 mm).
b. Side 0.0015-0.0035 inch (0.04-0.09 mm).
c. Inner Rotor to Case 0.001-0.002 inch (0.03-0.07 mm).

INSTALLATION

1. Install oil pump assembly and tighten attaching bolts to specifications.
2. Using oil seal installer tool No. MB998306, install new front oil seal into oil pump housing.
3. Reverse steps 1 and 2 in removal procedure, to install.