Toyota Pick-ups/Land Cruiser/4Runner 1989-1996

Timing Chain Cover and Seal

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REMOVAL & INSTALLATION



22R and 22R-E Engines

See Figure 1


WARNING
This procedure requires tools which may not be in your tool box. Pulley extractors and a counter-holding bar are required. Do not attempt the procedure without these tools available.

  1. Remove the cylinder head.
  2.  



Click image to see an enlarged view

Fig. Fig. 1: Exploded view of the timing chain and cover on the 22R and 22R-E engines

  1. Drain the cooling system and remove the radiator.
  2.  


CAUTION
When draining 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 coolant into a sealable container. Coolant may be reused unless it is contaminated or several years old.

  1. On 4WD vehicles, remove the front differential.
  2.  
  3. Remove the oil pan.
  4.  
  5. Remove the power steering belt if so equipped.
  6.  
  7. Remove the air conditioning belt, compressor and bracket if so equipped.
  8.  
  9. Remove the fan clutch (fluid coupling), with the fan and water pump pulley.
  10.  
  11. Matchmark and remove the crankshaft pulley(s). This bolt will be very tight. Use the counter-holding bar, properly installed, to hold the crankshaft while loosening the bolt. Use the pulley extractor or gear puller to remove the pulley from the shaft.
  12.  
  13. Remove the water bypass pipe.
  14.  
  15. Remove the fan belt adjusting bar. If necessary, remove the lower power steering bracket for access.
  16.  
  17. Disconnect the heater water outlet pipe.
  18.  
  19. Unbolt the timing chain cover assembly. Be careful to loosen only the correct bolts.
  20.  

To install:
  1. Install new gaskets over the dowels on the timing chain cover. Slide the cover assembly over the dowels and pump spline. Insert the retaining bolts and tighten them. Tighten the 8mm bolts to 9 ft. lbs. (13 Nm) and the 10mm bolts to 29 ft. lbs. (39 Nm).
  2.  
  3. Temporarily install the adjusting bar to the alternator. Install the adjusting bar to the chain cover and tighten the bolts to 9 ft. lbs. (13 Nm).
  4.  
  5. Install the heater water outlet pipe.
  6.  
  7. Install the water bypass pipe.
  8.  
  9. Install the crankshaft pulley and bolt. Use the counter-holding tool to hold the pulley and tighten the bolt to 116 ft. lbs. (157 Nm). If equipped with air conditioning, install the second crankshaft pulley.
  10.  
  11. Install the water pump pulley and fluid coupling with the fan.
  12.  
  13. Adjust the tension on the drive belts.
  14.  
  15. Install the air conditioning compressor bracket, compressor and belt if they were removed.
  16.  
  17. Install the power steering belt and adjust it.
  18.  
  19. Attach the oil pan.
  20.  
  21. Install the radiator.
  22.  
  23. Install the front differential.
  24.  
  25. Install the cylinder head.
  26.  

1FZ-FE Engine
  1. Disconnect the negative battery cable.
  2.  


CAUTION
On vehicles with air bags, work must be started after 90 seconds from the time the ignition switch is turned to the LOCK position and the negative (-) battery cable is disconnected.

  1. Raise and safely support the vehicle.
  2.  
  3. Drain the engine oil and the engine coolant.
  4.  
  5. Remove the engine under cover.
  6.  
  7. Remove the radiator.
  8.  
  9. Disconnect and remove the A/C compressor and the bracket.
  10.  
  11. Remove the radiator pipe by disconnecting the radiator hose from the water inlet.
  12.  
  13. Remove the water pump and the gasket.
  14.  
  15. Remove the cylinder head.
  16.  
  17. Disconnect the oil cooler pipe bracket from the No. 1 oil pan.
  18.  
  19. Remove the oil level sensor.
  20.  
  21. Remove the bolts holding the No. 1 oil pan to the transmission housing.
  22.  
  23. Remove the No. 2 and No. 1 oil pans.
  24.  
  25. Using SST 09213-58012 and 09330-00021, or equivalent, remove the pulley bolt. Remove the crankshaft pulley.
  26.  
  27. Check the thrust clearance of the oil pump driveshaft gear.
    1. Using a dial indicator with a lever type attachment, measure the thrust clearance.
    2.  
    3. Maximum thrust clearance is 0.0118 in. (0.30 mm).
    4.  
    5. If the thrust clearance is greater than maximum, replace the oil pump driveshaft gear and/or timing chain cover.
    6.  

  28.  
  29. Remove the drive belt idler pulley.
  30.  
  31. Remove the bolts securing the timing chain cover, then remove the cover. Be sure to note the locations of the different sized bolts.
  32.  

To install:
  1. Clean the gasket mating areas well.
  2.  
  3. Install the timing chain cover. Apply packing seal to the cover before installation.
    1. Engage the gear of the oil pump drive rotor with the gear of the oil pump drive gear, and install the oil pump.
    2.  
    3. Install the oil pump and the drive belt adjusting bar and tighten the bolts to 15 ft. lbs. (21 Nm).
    4.  

  4.  
  5. Install the timing chain cover with the proper length bolts in their correct locations.
  6.  
  7. Remove the cord from the chain.
  8.  
  9. Install the drive belt idler pulley and tighten the bolt to 32 ft. lbs. (43 Nm).
  10.  
  11. Install the crankshaft pulley as follows:
    1. Align the pulley set key with the key groove of the pulley and slide on the pulley.
    2.  
    3. Install the pulley bolt and tighten to 304 ft. lbs. (412 Nm).
    4.  

  12.  
  13. Install the No. 1 and the No. 2 oil pans.
  14.  
  15. Install the bolts holding the No. 1 oil pan to the transmission housing. Tighten to 53 ft. lbs. (72 Nm).
  16.  
  17. Install the oil level sensor with a new gasket and tighten the bolts to 48 inch lbs. (5 Nm).
  18.  
  19. Connect the oil cooler pipe bracket to the No. 1 oil pan.
  20.  
  21. Install the cylinder head.
  22.  
  23. Install the water pump and tighten the bolts to 15 ft. lbs. (21 Nm).
  24.  
  25. Attach the No. 2 radiator hose to the water inlet. Install the nuts holding the radiator pipe to the No. 1 oil pan, then tighten to 15 ft. lbs. (21 Nm).
  26.  
  27. Install the A/C compressor bracket, tighten the bolts to 27 ft. lbs. (37 Nm).
  28.  
  29. Install the A/C compressor, tighten the bolts to 18 ft. lbs. (25 Nm). Install and adjust the drive belt.
  30.  
  31. Install the radiator.
  32.  
  33. Refill the engine oil and the engine coolant.
  34.  
  35. Connect the negative battery cable.
  36.  
  37. Start the engine, check for leaks, and check the ignition timing.
  38.  
  39. Install the engine under cover.
  40.  
  41. Top off any fluid levels.
  42.  

2VZ-FE Engine
  1. Disconnect the negative battery cable.
  2.  

  1. Raise and safely support the vehicle.
  2.  
  3. Drain the engine coolant and the engine oil.
  4.  
  5. Remove the cylinder head.
  6.  
  7. Remove the radiator.
  8.  
  9. On 4WD vehicles, remove the front differential.
  10.  
  11. Remove the oil pan.
  12.  
  13. If equipped with P/S, remove the power steering belt.
  14.  
  15. If equipped with A/C, remove the A/C belt, compressor, and the bracket.
  16.  
  17. Remove the fluid coupling with the fan and the water pump pulley.
    1. Loosen the water pump pulley bolts. Loosen the belt adjusting bolt and the pivot bolt of the alternator and remove the drive belt.
    2.  
    3. Remove the set nuts, the fluid coupling with the fan, and the water pump pulley.
    4.  

  18.  
  19. Remove the crankshaft pulley.
  20.  
  21. Remove the water bypass pipe.
  22.  
  23. Remove the fan belt adjusting bar. With P/S, remove the lower P/S bracket.
  24.  
  25. Disconnect the heater water outlet pipe.
  26.  
  27. Remove the chain cover assembly. Remove the bolts shown by the arrows.
  28.  

To install:
  1. Clean the gasket mating areas well.
  2.  
  3. Install the timing chain cover assembly.
    1. Remove the old cover gaskets and install new gaskets.
    2.  
    3. Slide the cover assembly over the dowels and the pump spline. Tighten the 8 mm bolts to 9 ft. lbs. (13 Nm) and the 10 mm bolts to 29 ft. lbs. (13 Nm).
    4.  

  4.  
  5. Install the fan belt adjusting bar to the chain cover and the cylinder head. Tighten to 9 ft. lbs. (13 Nm).
  6.  
  7. Install the heater water outlet pipe.
  8.  
  9. Install the water bypass pipe.
  10.  
  11. Install the crankshaft pulley and tighten the bolt to 116 ft. lbs. (157 Nm).
  12.  
  13. Install the water pump pulley and the fluid coupling with the fan. Place the belt onto each pulley. While pulling the belt tight, tighten the four nuts.
  14.  
  15. Adjust the drive belt tension.
  16.  
  17. If removed, install the A/C compressor bracket, the compressor and the belt.
  18.  
  19. If removed, install the P/S belt.
  20.  
  21. Apply seal packing to the joint part of the cylinder block, the chain cover, the cylinder block, the rear oil seal retainer and the oil pan. Install the oil pan over the studs on the block and tighten the nuts and bolts to 9 ft. lbs. (13 Nm).
  22.  
  23. Install the radiator.
  24.  
  25. Install the cylinder head.
  26.  
  27. If removed, install the front differential.
  28.  
  29. Fill with engine coolant and engine oil.
  30.  
  31. Connect the negative battery cable.
  32.  
  33. Start the engine and check the ignition timing.
  34.  

3RZ-FE Engine

  1. Disconnect the negative battery cable.
  2.  

  1. Raise and safely support the vehicle.
  2.  
  3. Drain the engine coolant and the engine oil.
  4.  
  5. Remove the cylinder head.
  6.  
  7. Remove the radiator.
  8.  
  9. On 4WD vehicles, remove the front differential.
  10.  
  11. Remove the oil pan.
  12.  
  13. If equipped with P/S, remove the power steering belt.
  14.  
  15. If equipped with A/C, remove the A/C belt, compressor, and the bracket.
  16.  
  17. Remove the fluid coupling with the fan and the water pump pulley.
    1. Loosen the water pump pulley bolts. Loosen the belt adjusting bolt and the pivot bolt of the alternator and remove the drive belt.
    2.  
    3. Remove the set nuts, the fluid coupling with the fan, and the water pump pulley.
    4.  

  18.  
  19. Remove the crankshaft pulley.
  20.  
  21. Remove the water bypass pipe.
  22.  
  23. Remove the fan belt adjusting bar. With P/S, remove the lower P/S bracket.
  24.  
  25. Disconnect the heater water outlet pipe.
  26.  
  27. Remove the chain cover assembly. Remove the bolts shown by the arrows.
  28.  

To install:
  1. Install the timing chain cover assembly.
    1. Remove the old cover gaskets and install new gaskets.
    2.  
    3. Slide the cover assembly over the dowels and the pump spline. Tighten the 8 mm bolts to 9 ft. lbs. (13 Nm) and the 10 mm bolts to 29 ft. lbs. (13 Nm).
    4.  

  2.  
  3. Install the fan belt adjusting bar to the chain cover and the cylinder head. Tighten to 9 ft. lbs. (13 Nm).
  4.  
  5. Install the heater water outlet pipe.
  6.  
  7. Install the water bypass pipe.
  8.  
  9. Install the crankshaft pulley and tighten the bolt to 116 ft. lbs. (157 Nm).
  10.  
  11. Install the water pump pulley and the fluid coupling with the fan. Place the belt onto each pulley. While pulling the belt tight, tighten the four nuts.
  12.  
  13. Adjust the drive belt tension.
  14.  
  15. If removed, install the A/C compressor bracket, the compressor and the belt.
  16.  
  17. If removed, install the P/S belt.
  18.  
  19. Apply seal packing to the joint part of the cylinder block, the chain cover, the cylinder block, the rear oil seal retainer and the oil pan. Install the oil pan over the studs on the block and tighten the nuts and bolts to 9 ft. lbs. (13 Nm).
  20.  
  21. Install the radiator.
  22.  
  23. Install the cylinder head.
  24.  
  25. If removed, install the front differential.
  26.  
  27. Fill with engine coolant and engine oil.
  28.  
  29. Connect the negative battery cable.
  30.  
  31. Start the engine and check the ignition timing.
  32.  

SEAL REPLACEMENT



Cover Removed

See Figures 2 and 3

  1. Unbolt the timing chain cover assembly. Be careful to loosen only the correct bolts.
  2.  
  3. Pry out the seal from the cover with a flat-bladded tool.
  4.  
  5. It is a good idea to remove the oil pump from the timing cover and replace the O-ring.
  6.  



Click image to see an enlarged view

Fig. Fig. 2: Remove the seal with a flat-bladded tool and hammer

To install:
  1. Clean and inspect the timing cover area. Install new gaskets around the dowel areas and pump spline.
  2.  
  3. Apply multi-purpose grease to the new oil seal lip.
  4.  
  5. Tap the seal into place with SST 09223-50010/60010 or equivalent, and a hammer. Do this until the seal surface is flush with the cover edge.
  6.  



Click image to see an enlarged view

Fig. Fig. 3: Install the seal using a proper sized driver

  1. Install the cover, tighten the bolts as specified for your engine.
  2.  
  3. If the oil pump was removed, install a new O-ring behind the pump prior to installation.
  4.  

Cover Not Removed

See Figures 4 and 5

  1. Unbolt and remove the oil pump.
  2.  
  3. Using a knife, carefully cut off the oil seal lip. With a flat-bladded tool, (preferably with tape around it) pry the seal from the cover.
  4.  



Click image to see an enlarged view

Fig. Fig. 4: Carefully cut off the oil seal lip, then pry the seal from the cover

To install:
  1. Apply multi-purpose grease to the new oil seal lip.
  2.  
  3. Tap the seal into place with SST 09223-50010/60011 or equivalent, and a hammer. Do this until the seal surface is flush with the cover edge.
  4.  



Click image to see an enlarged view

Fig. Fig. 5: Drive the seal flush against the cover edge

  1. Install the oil pump with a new O-ring.
  2.  

 
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