Jeep Wagoneer/Commando/Cherokee 1957-1983 Repair Information

Oil Pan

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REMOVAL & INSTALLATION 4-134 Engine



JEEPSTER/COMMANDO

CAUTION
The EPA warns that prolonged contact with used engine oil may cause a number of skin disorders, including cancer! You should make every effort to minimize your exposure to used engine oil. Protective gloves should be worn when changing the oil. Wash your hands and any other exposed skin areas as soon as possible after exposure to used engine oil. Soap and water, or waterless hand cleaner should be used.

  1. Raise and support the front end on jackstands.
  2.  
  3. Drain the oil.
  4.  
  5. Remove the oil pan attaching bolts and remove the oil pan.
  6.  
  7. Clean all the mating surfaces and install a new gasket coated with sealer on the pan.
  8.  
  9. Position the oil pan, install the bolts and tighten them to 9 ft. lb.
  10.  

FC-150
  1. Remove the engine from the truck.
  2.  
  3. Place the engine on a work stand and turn it upside down.
  4.  
  5. Remove the oil pan attaching bolts and remove the oil pan.
  6.  
  7. Clean all the mating surfaces and install a new gasket coated with sealer on the pan.
  8.  
  9. Position the oil pan, install the bolts and tighten them to 9 ft. lb.
  10.  
  11. Install the engine.
  12.  

6-225


CAUTION
The EPA warns that prolonged contact with used engine oil may cause a number of skin disorders, including cancer! You should make every effort to minimize your exposure to used engine oil. Protective gloves should be worn when changing the oil. Wash your hands and any other exposed skin areas as soon as possible after exposure to used engine oil. Soap and water, or waterless hand cleaner should be used.

  1. Raise and support the front end on jackstands.
  2.  
  3. Drain the oil.
  4.  
  5. Remove the oil pan attaching bolts and remove the oil pan.
  6.  
  7. Clean all the mating surfaces and install a new gasket coated with sealer on the pan.
  8.  
  9. Position the oil pan, install the bolts and tighten them to 10-15 ft. lb.
  10.  

6-226 Engine


CAUTION
The EPA warns that prolonged contact with used engine oil may cause a number of skin disorders, including cancer! You should make every effort to minimize your exposure to used engine oil. Protective gloves should be worn when changing the oil. Wash your hands and any other exposed skin areas as soon as possible after exposure to used engine oil. Soap and water, or waterless hand cleaner should be used.

  1. Remove the engine from the truck.
  2.  
  3. Place the engine on a work stand and turn it upside down.
  4.  
  5. Remove the oil pan attaching bolts and remove the oil pan.
  6.  
  7. Clean all the mating surfaces and install a new gasket coated with sealer on the pan.
  8.  
  9. Position the oil pan, install the bolts and tighten them to 9 ft. lb.
  10.  
  11. Install the engine.
  12.  

6-230 Engine


CAUTION
The EPA warns that prolonged contact with used engine oil may cause a number of skin disorders, including cancer! You should make every effort to minimize your exposure to used engine oil. Protective gloves should be worn when changing the oil. Wash your hands and any other exposed skin areas as soon as possible after exposure to used engine oil. Soap and water, or waterless hand cleaner should be used. See Figure 1

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Fig. Fig. 1: Oil pan gasket replacement 6 cyl-230 engine


  1. Unbolt and remove the pan.
  2.  
  3. Pull the ends of the pan gasket from the front and rear filler blocks.
  4.  
  5. Insert gasket aligning dowels in the holes on each side of the block at the front.
  6.  
  7. Place the new gasket on top of the old gasket. With the gaskets held in place by the dowels, make a cut through the gaskets, 3 / 32 " from the front filler block, or 5 / 16 " from the edge of the nearest hole. The cut must be so that the triangular end of the oil pan seal will cover the splice.
  8.  
  9. Remove both gaskets and discard the old one.
  10.  
  11. Clean the gasket mating surfaces thoroughly.
  12.  
  13. Coat both sides of the new gaskets with sealer, and the splice near the front filler block. With the dowels in the holes, position the gaskets on the block. Replace the ends of the oil pan seal at both filler blocks.
  14.  
  15. Coat the filler block seals with clean engine oil.
  16.  
  17. Install the pan and hand-tighten the bolts.
  18.  
  19. Working from the center bolts toward the ends, and alternating from side to side, torque the bolts to 12-15 ft. lb.
  20.  

6-232 and 6-258 Engine


CAUTION
The EPA warns that prolonged contact with used engine oil may cause a number of skin disorders, including cancer! You should make every effort to minimize your exposure to used engine oil. Protective gloves should be worn when changing the oil. Wash your hands and any other exposed skin areas as soon as possible after exposure to used engine oil. Soap and water, or waterless hand cleaner should be used.

  1. Raise the vehicle and drain the engine oil.
  2.  
  3. Remove the starter motor.
  4.  
  5. On the Commando, place a jack under the transmission bellhousing. Disconnect the engine right support cushion bracket from the engine block and raise the engine to allow sufficient clearance for the removal of the oil pan.
  6.  
  7. Remove all of the oil pan attaching bolts and remove the oil pan.
  8.  
  9. Remove the oil pan front and rear oil seals and side gaskets. Thoroughly clean the gasket surfaces of the oil pan and engine block. Remove all sludge and dirt from the oil pan sump.
  10.  
  11. When installing the front oil pan seal to the timing chain cover, apply a generous amount of Permatex® No. 2 to the end tabs. Also, cement the oil pan side gaskets to the mating surface on the bottom of the engine block. Coat the inside curved surface of the new oil pan rear seal with soap and apply a generous amount of Permatex® No. 2 to the gasket contacting surface of the seal end tabs.
  12.  
  13. Install the seal in the recess of the rear main bearing cap, making certain that it is fully seated.
  14.  
  15. Apply engine oil to the oil pan contacting surface of the front and rear oil pan seals.
  16.  
  17. Install the oil pan, lower the engine and connect the engine mount. Install the starter motor. Fill the crankcase with oil.
  18.  

All V8 Engines


CAUTION
The EPA warns that prolonged contact with used engine oil may cause a number of skin disorders, including cancer! You should make every effort to minimize your exposure to used engine oil. Protective gloves should be worn when changing the oil. Wash your hands and any other exposed skin areas as soon as possible after exposure to used engine oil. Soap and water, or waterless hand cleaner should be used.

  1. Drain the engine oil.
  2.  
  3. Remove the starter.
  4.  
  5. Remove the oil pan.
  6.  
  7. Install in the reverse order.
  8.  

On the 304, 360 and 401 V8s, follow the procedure given for the Sixes pertaining to the removal and installation of the rubber front and rear oil pan end seals. The 327 and 350 V8s have no rubber end seals for the oil pan. Thoroughly clean all mating surfaces and remove all sludge and dirt from the oil pan.

 
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