Genuine 1998 Jeep Wrangler Oil Pan

1998 Jeep Wrangler Oil Pan Parts Questions & Experts Answers

• Q: How to disconnect the cable from the negative terminal of the battery and remove the oil pan in 3.6L V6 engine on 1998 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. Remove the lower splash shield fasteners and take off the splash shield. Remove the bolts, nuts, and studs, then carefully separate the lower oil pan from the upper oil pan, avoiding prying between them to prevent damage to the sealing surfaces. Tap the pan with a soft-face hammer to break the gasket seal, and if it still sticks, use a putty knife carefully. Remove the dipstick tube bracket mounting bolt and pull the dipstick tube out of the upper oil pan using a twisting motion. Disconnect the exhaust cross under pipe flange fasteners and remove the cross under pipe. Remove the four transmission-to-oil pan mounting bolts, the torque converter access plate, and the rubber plugs below the plate. Remove the two upper pan-to-rear main seal housing bolts, being cautious of the hard-to-see oil pan-to-rear main seal bolts that can be easily missed. Remove the nineteen upper oil pan bolts around the perimeter of the pan, then carefully separate the oil pan from the engine block using the indented prying points and a putty knife if necessary. Clean the pan(s) with solvent, removing all old sealant and gasket material from the mating surfaces, and check for distortion around the bolt holes. Apply a 1/8-inch wide by 1/16-inch high bead of RTV sealant to the sealing surface of the pan, install the upper pan and bolts, and tighten them finger-tight. Tighten the upper pan-to-trans axle bolts first, then the remaining bolts in a circular pattern from the middle outwards. Installation of the remaining components follows the reverse order of removal. Refill the engine with oil, start and run the engine until normal operating temperature is reached, and check for leaks. For the lower oil pan, apply a 1/8-inch wide by 1/16-inch high bead of RTV sealant to the sealing surface, install the lower pan to the upper pan and bolts, and tighten them in a circular pattern from the middle outwards. Refill the engine with oil, start and run the engine until normal operating temperature is reached, and check for leaks.