Genuine 1995 Jeep Wrangler Oil Pump

1995 Jeep Wrangler Oil Pump Parts Questions & Experts Answers

• Q: How to disconnect the cable from the negative terminal of the battery and remove the oil pump in 3.6L V6 engine on 1995 Jeep Wrangler?

  A: Disconnect the cable from the negative terminal of the battery. Raise the front of the vehicle and support it securely on jackstands, applying the parking brake and blocking the rear wheels to prevent rolling. Drain the engine oil, then remove the lower splash shield fasteners and the splash shield. Take off the lower and upper oil pans, followed by the oil pump pick-up tube fastener, and remove the tube from the pump, discarding the pick-up tube O-ring. Disconnect the oil pump solenoid electrical connector from the engine side and remove the connector retaining clip. From the side of the block, depress the locking tab on the connector and push it into the block, rotating it slightly clockwise as needed. Remove the oil pump timing gear splash shield bolts and the splash shield. Press the oil pump chain tensioner away from the chain until a 3 mm Allen wrench can be inserted to hold it back. Use a permanent marker or paint to make reference marks on the chain and oil pump gear. Hold the oil pump gear to prevent movement, then remove the T45 Torx mounting bolt and the gear. Hold the tensioner, remove the Allen wrench, allowing it to release, then remove the spring from the dowel pin and slide the tensioner from the oil pump. Remove the oil pump mounting bolts and take out the pump. Clean all parts thoroughly in solvent and inspect the rotors, pump cover, and timing chain cover for damage; replace the assembly if necessary. Measure the oil pump cover for warpage using a straightedge and feeler gauge, and if warped beyond the limit, replace the pump. Measure the thickness of the outer and inner rotors with a micrometer, replacing the pump if either is below the specified value. Insert the outer rotor into the housing and measure the clearance between the rotor and housing; if it exceeds the maximum allowable clearance, replace the pump. Install the inner rotor and measure the clearance between the lobes of the inner and outer rotors, replacing the pump if the clearance is too great. Check the clearance between the surface of the oil pump cover and the rotors with a straightedge and feeler gauge, replacing the pump if the clearance is excessive. Place the oil pump onto the engine block using the aligning dowels, install and tighten the mounting bolts to the specified torque. Slide the oil pump chain tensioner onto the pivot, push it back against the spring, and insert a 3 mm Allen wrench to hold it in place. Center the oil pump timing chain gear onto the oil pump shaft and install the T45 mounting bolt, tightening it to the specified torque. Maneuver the oil pump solenoid into position and insert it through the block opening until it snaps in place. Install the timing gear splash shield and bolts, tightening them to the specified torque. Reinstall the remaining components in reverse order of removal, then refill the engine with oil and change the oil filter.