Oil Pump: Service and Repair

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

REMOVAL

1. Refer to TIMING BELT and remove timing belt as outlined.
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

Fig. 17 Measuring Oil Pump Body & Side Clearances:

Fig. 18 Measuring Oil Pump Inner Rotor To Case Clearance:

1. Check oil pump case for cracks and damage.
2. Using a suitable feeler gauge, measure the following clearances referring to Figs. 17 and 18, as follows:
a. Body clearance should be .004-.007 inch (0.10-0.18mm).
b. Side clearance should be .0016-.0037 inch (0.040-0.095mm).
c. Inner rotor to case clearance should be .001-.002 inch (0.03-0.07mm).

INSTALLATION

1. Install oil pump assembly and tighten attaching bolts to specifications.
2. Using seal installer tool No. MD998717-01 or equivalent, install new front oil seal into oil pump housing.
3. Reverse steps 1 and 2 in removal procedure, to install.