ISUZU Amigo/Pick-ups/Rodeo/Trooper 1981-1996

Front Cover Oil Seal

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REMOVAL & INSTALLATION



See Figures 1 and 2



Click image to see an enlarged view

Fig. Fig. 1: Use a prybar to remove the old oil seal, but be careful not to distort the cover flange



Click image to see an enlarged view

Fig. Fig. 2: Install the seal to the cover using a suitable installation driver

Timing Chain Engines

  1. Disconnect the negative battery cable.
  2.  
  3. Drain the cooling system.
  4.  


CAUTION
When draining the coolant, keep in mind that cats and dogs are attracted by ethylene glycol antifreeze, and are quite likely to drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantity. Always drain the coolant into a sealable container. Coolant should be reused unless it is contaminated or several years old.

  1. Disconnect the radiator hoses and remove the radiator.
  2.  
  3. Remove the alternator and compressor drive belts.
  4.  
  5. Remove the cooling fan.
  6.  
  7. Remove the crankshaft pulley center bolt, the pulley and balancer assembly.
  8.  
  9. Using a small prybar and care not to damage the crankshaft and cover sealing surfaces, carefully, pry out the timing cover seal.
  10.  

To install:
  1. Using engine oil, lubricate the new seal and tap it into the front cover.
  2.  
  3. Install the balancer assembly, the pulley and the center bolt.
  4.  
  5. Install the cooling fan and the drive belts.
  6.  
  7. Install the radiator and connect the hoses.
  8.  
  9. Refill the cooling system and connect the negative battery cable.
  10.  

Timing Belt Engines
GASOLINE MODELS
  1. Disconnect the negative battery cable. Remove the crankshaft pulley.
  2.  
  3. Remove the upper and lower timing belt covers.
  4.  
  5. Rotate the crankshaft to align the camshaft sprocket with the mark on the rear timing cover and the crankshaft sprocket keyway with the mark on the oil seal retainer cover.
  6.  

With the timing marks aligned, the engine is positioned at TDC of the No. 4 cylinder's compression stroke.

  1. Loosen the timing belt tensioner and relax the tension and remove the timing belt from the crankshaft sprocket.
  2.  
  3. Remove the crankshaft sprocket bolt, the sprocket, the key and deflector shield.
  4.  
  5. Using a small prybar, pry the oil seal from the oil seal retainer.
  6.  

To install:
  1. Using a new oil seal, lubricate it with engine oil and tap it into the retainer with an oil seal installation tool.
  2.  
  3. Install the deflector, the key, the crankshaft sprocket and bolt.
  4.  
  5. With the crankshaft sprocket aligned with the timing mark, install the timing belt.
  6.  
  7. Apply the tensioner pulley spring pressure to the timing belt.
  8.  
  9. Rotate the crankshaft 2 complete revolutions in the opposite direction of rotation and realign the timing marks.
  10.  
  11. Loosen the tensioner pulley bolt to allow the spring to adjust the correct tension. Torque the tensioner pulley bolt to 14 ft. lbs. (20 Nm).
  12.  
  13. Install the timing covers and the crankshaft pulley.
  14.  
  15. To complete the installation, reverse the removal procedures.
  16.  

DIESEL MODELS

See Figure 3



Click image to see an enlarged view

Fig. Fig. 3: Timing pulley housing, crankshaft seal and retainer-diesel engine

  1. Disconnect the negative battery terminal. Drain the cooling system.
  2.  


CAUTION
When draining the coolant, keep in mind that cats and dogs are attracted by ethylene glycol antifreeze, and are quite likely to drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantity. Always drain the coolant into a sealable container. Coolant should be reused unless it is contaminated or several years old.

  1. Remove the timing belt.
  2.  
  3. Remove the crankshaft sprocket bolt.
  4.  

To remove the crankshaft sprocket bolt, it may be necessary to remove the starter or the flywheel cover plate to lock the flywheel; otherwise, it may be difficult to keep the crankshaft from turning.

  1. Using a puller tool press the crankshaft center and timing sprocket from the crankshaft.
  2.  
  3. Remove the oil seal retainer-to-rear timing cover bolts and the retainer.
  4.  
  5. Using a small prybar, pry the oil seal from engine housing; be careful not to damage the crankshaft or the oil seal mounting surface.
  6.  

To install:
  1. Using a new oil seal, lubricate the seal lips with engine oil and install it into the engine using a seal installation tool.
  2.  
  3. Install the oil seal retainer.
  4.  
  5. Install the crankshaft center and timing sprocket to the crankshaft.
  6.  
  7. Install the timing belt.
  8.  
  9. Refill the cooling system. Start the engine, check and/or adjust the timing and check for leaks.
  10.  

 
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