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

Timing Chain

Print

REMOVAL & INSTALLATION



22R and 22R-E Engines

See Figures 1, 2, 3 and 4


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.  
  3. Drain the cooling system and remove the radiator.
  4.  


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.  
  21. Remove the chain from the crankshaft sprocket. Remove the camshaft sprocket and the chain upwards.
  22.  



Click image to see an enlarged view

Fig. Fig. 1: The chain can be removed after the front cover is removed

  1. Remove the oil pump drive splines and the crankshaft sprocket.
  2.  



Click image to see an enlarged view

Fig. Fig. 2: The drive spline comes off first ...



Click image to see an enlarged view

Fig. Fig. 3: ... then the crankshaft sprocket

To install:
  1. Remove any gasket material left on the cylinder block.
  2.  



Click image to see an enlarged view

Fig. Fig. 4: Using a scraper, clean the gasket areas thoroughly

  1. Turn the crankshaft until the shaft key is on top.
  2.  
  3. Slide the sprocket over the key on the crankshaft. Place the timing chain on the sprocket with the single bright link aligned with the timing mark on the sprocket.
  4.  
  5. Place the timing chain on the cam sprocket so that the link BETWEEN the two bright links is aligned with the timing mark on the sprocket. Make certain the chain is positioned within the dampers (guides).
  6.  
  7. Turn the camshaft sprocket counter-clockwise (viewed from the front) to take slack out of the chain. Rest or support the camshaft sprocket and chain at the top of the block.
  8.  
  9. Install the oil pump drive over the crankshaft key. It may be necessary to use a seal or bearing installing tool.
  10.  
  11. 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).
  12.  
  13. 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).
  14.  
  15. Install the heater water outlet pipe.
  16.  
  17. Install the water bypass pipe.
  18.  
  19. 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.
  20.  
  21. Install the water pump pulley and fluid coupling with the fan.
  22.  
  23. Adjust the tension on the drive belts.
  24.  
  25. Install the air conditioning compressor bracket, compressor and belt if they were removed.
  26.  
  27. Install the power steering belt and adjust it.
  28.  
  29. Attach the oil pan.
  30.  
  31. Install the radiator.
  32.  
  33. Install the front differential.
  34.  
  35. Install the cylinder head.
  36.  

2RZ-FE and 3RZ-FE Engines

See Figures 5 through 16

  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. Remove the engine under cover.
  4.  



Click image to see an enlarged view

Fig. Fig. 5: Exploded view of the 2RZ-FE and 3RZ-FE engine timing chain components

  1. Drain the engine coolant and the engine oil.
  2.  
  3. On 4WD vehicles, remove the front differential.
  4.  
  5. Remove the alternator belt, fan with coupling 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.  

  6.  
  7. Remove the cylinder head.
  8.  
  9. If equipped with A/C, remove the A/C belt, compressor, and the bracket.
  10.  
  11. Remove the alternator adjusting bar and bracket.
  12.  
  13. Unbolt and remove the crankshaft position sensor and O-ring.
  14.  



Click image to see an enlarged view

Fig. Fig. 6: The crankshaft position sensor is located below the water pump

  1. On 2WD vehicles, remove the stiffener plates.
  2.  



Click image to see an enlarged view

Fig. Fig. 7: Remove the bolts securing the stiffener plates

  1. Unbolt the flywheel housing under cover and dust seal.
  2.  
  3. Remove the oil pan.
  4.  
  5. Unsecure the oil strainer and gasket.
  6.  
  7. Remove the crankshaft pulley, a pulley bolt remover will be needed.
  8.  



Click image to see an enlarged view

Fig. Fig. 8: The crankshaft pulley must be removed with a special puller

  1. Remove the water bypass pipe.
  2.  
  3. Remove the chain cover assembly. Remove the bolts shown by the arrows.
  4.  



Click image to see an enlarged view

Fig. Fig. 9: Remove the bolts securing the front cover

  1. Remove the No. 1 timing chain and camshaft gear.
  2.  
  3. Remove the crankshaft timing gear.
  4.  
  5. Remove the No. 1 timing chain tensioner slipper and No. 1 vibration damper. On the 2RZ-FE, remove the two bolts and the damper. On the 3RZ-FE, remove the bolt, nut and No. 1 damper.
  6.  



Click image to see an enlarged view

Fig. Fig. 10: Remove the bolts securing the chain dampers

  1. On the 2RZ-FE remove the crankshaft position sensor rotor and the timing chain oil jet.
  2.  



Click image to see an enlarged view

Fig. Fig. 11: The oil jet is secured by a single bolt

  1. On the 3RZ-FE engine, remove the No. 2 and No. 3 vibration dampers and the No. 2 chain tensioner as follows:
    1. Install a pin to the No. 2 tensioner and lock the plunger.
    2.  
    3. Remove the bolt and the No. 2 damper.
    4.  
    5. Remove the 2 bolts and the No. 3 damper.
    6.  
    7. Unsecure the nut and the No. 2 tensioner.

      Click image to see an enlarged view

      Fig. Fig. 12: Lock the plunger with an appropriate pin



      Click image to see an enlarged view

      Fig. Fig. 13: Fastener locations for the tensioner and damper

    8.  

  2.  
  3. Remove the balance shaft driven gear, shaft, No. 2 timing chain and the No. 2 crankshaft sprocket.
    1. Unbolt the balance shaft driven gear.
    2.  
    3. Remove the balance shaft gear with the shaft.
    4.  
    5. Remove the No. 2 timing chain with the No. 2 crankshaft timing sprocket.
    6.  

  4.  
  5. Remove the No. 4 vibration damper.
  6.  

To install:
  1. Install the No. 4 vibration dampener.
  2.  
  3. Install the No. 2 timing chain, No. 2 crankshaft timing sprocket, balance shaft drive gear and shaft as follows:
    1. Install the No. 2 chain by matching the marked links with the timing marks on the crankshaft sprocket and balance shaft timing sprocket.
    2.  
    3. Fit the other mark link of the No. 2 chain onto the sprocket behind the large timing mark of the balance shaft gear.
    4.  
    5. Insert the balance shaft gear shaft through the balance shaft drive gear so that it fits into the thrust plate hole. Align the small timing mark of the balance shaft drive gear with the timing mark of the balance shaft timing gear.
    6.  
    7. Install the bolt to the balance shaft gear and tighten to 18 ft. lbs. (25 Nm).
    8.  
    9. Check each timing mark is matched with the corresponding mark link.

      Click image to see an enlarged view

      Fig. Fig. 14: Align the small timing mark of the balance shaft drive gear with the timing mark of the balance shaft timing gear

    10.  

  4.  
  5. Install the No. 2, No. 3 vibration dampers and the No. 2 chain tensioner.
  6.  

Assemble the chain tensioner with the pin installed, then remove the pin after assembly.

  1. Install the No. 2 chain tensioner with the nut, tighten to 13 ft. lbs. (18 Nm).
  2.  
  3. Install the No. 3 damper withe the bolts, tighten to 13 ft. lbs. (18 Nm).
  4.  
  5. Install the No. 2 damper, tighten to 20 ft. lbs. (27 Nm).
  6.  
  7. Remove the pin from the No. 2 chain tensioner and free the plunger.
  8.  

  1. On the 2RZ-FE engines, install the oil jet and crankshaft position sensor rotor. Make sure the front mark of the cavity of the rotor is facing forward.
  2.  
  3. Install the No. 1 timing chain tensioner slipper and the No. 1 vibration damper.
    1. Install the No. 1 damper, tighten to 22 ft. lbs. (29 Nm).
    2.  
    3. Install the slipper, tighten to 20 ft. lbs. (27 Nm).
    4.  
    5. Check that the slipper moves smoothly.
    6.  

  4.  
  5. Install the crankshaft timing gear.
  6.  
  7. Install the No. 1 timing chain and camshaft timing gear.
  8.  



Click image to see an enlarged view

Fig. Fig. 15: Align the timing marks as shown

  1. Align the timing mark between the mark link of the No. 1 timing chain, and install the No. 1 timing chain to the gear.
  2.  
  3. Align the timing mark of the crankshaft timing gear with the mark of the No. 1 timing chain, then install the No. 1 timing chain.
  4.  
  5. Tie the No. 1 chain with a wire or cord, make sure it does not come loose.
  6.  

  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 following:

      Click image to see an enlarged view

      Fig. Fig. 16: Timing cover fastener identification



      12mm A bolts-14 ft. lbs. (20 Nm)
       
      12mm B bolts-18 ft. lbs. (25 Nm)
       
      14mm bolts-32 ft. lbs. (44 Nm)
       
      14mm nut-14 ft. lbs. (20 Nm)
       

    4.  
    5. Attach the water bypass pipe.
    6.  
    7. Remove the cord or wire from the chain.
    8.  

  2.  
  3. Install the crankshaft pulley, tighten the bolt to 193 ft. lbs. (260 Nm). On A/C vehicles, install the crankshaft pulleys with bolts and tighten to 18 ft. lbs. (25 Nm).
  4.  
  5. Install the oil strainer, tighten to 13 ft. lbs. (18 Nm).
  6.  
  7. Attach the oil pan with fresh sealant, tighten the mounting bolts to 9 ft. lbs. (13 Nm).
  8.  
  9. Attach the flywheel housing under cover and dust seal.
  10.  
  11. Attach the stiffener plates on the 2WD vehicles, tighten to 27 ft. lbs. (37 Nm).
  12.  
  13. Install the crankshaft position sensor. with a new O-ring.
  14.  
  15. Install the alternator, adjusting bar and bracket.
  16.  
  17. For vehicles with A/C, install the compressor and bracket.
  18.  
  19. Install the cylinder head.
  20.  
  21. 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.
  22.  
  23. On 4WD vehicles, install the front differential and driveshaft assemblies.
  24.  
  25. Lower the vehicle.
  26.  
  27. Adjust the drive belt tension.
  28.  
  29. Fill with engine coolant and engine oil.
  30.  
  31. Install the engine under cover.
  32.  
  33. Connect the negative battery cable.
  34.  
  35. Start the engine and check the ignition timing.
  36.  
  37. Recheck fluid levels and top off.
  38.  

1FZ-FE Engine

See Figure 17

  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.  



Click image to see an enlarged view

Fig. Fig. 17: Exploded view of the timing chain assembly on the 1FZ-FE engine

  1. Remove the engine under cover.
  2.  
  3. Remove the radiator.
  4.  
  5. Disconnect and remove the A/C compressor and the bracket.
  6.  
  7. Remove the radiator pipe. Disconnect the radiator hose from the water inlet.
  8.  
  9. Remove the water pump and the gasket.
  10.  
  11. Remove the cylinder head.
  12.  
  13. Disconnect the oil cooler pipe bracket from the No. 1 oil pan.
  14.  
  15. Remove the oil level sensor.
  16.  
  17. Remove the bolts holding the No. 1 oil pan to the transmission housing.
  18.  
  19. Remove the No. 2 and No. 1 oil pans.
  20.  
  21. Using SST 09213-58012 and 09330-00021, or equivalent, remove the pulley bolt. Remove the crankshaft pulley.
  22.  
  23. Check the thrust clearance of the oil pump driveshaft gear as follows:
    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.  

  24.  
  25. Remove the drive belt idler pulley.
  26.  
  27. Remove the timing chain cover.
  28.  
  29. Remove the timing chain and the camshaft timing gear.
  30.  
  31. Pull out the crankshaft timing gear.
  32.  
  33. Remove the chain tensioner slipper and the vibration damper.
  34.  
  35. Remove the oil jet.
  36.  
  37. Remove the crankshaft rotor.
  38.  
  39. Remove the oil pump driveshaft gear.
  40.  
  41. Remove the pump driveshaft gear.
  42.  

To install:
  1. Clean the mating areas well.
  2.  
  3. Set the crankshaft. Turn the crankshaft until the set key on the crankshaft is facing downward (6 o'clock).
  4.  
  5. Install the pump driveshaft gear.
  6.  
  7. Apply a light coat of engine oil on the shaft portion of the oil pump driveshaft gear, and install the gear.
  8.  
  9. Install the crankshaft rotor.
  10.  
  11. Install the oil jet and tighten the bolt to 14 ft. lbs. (20 Nm).
  12.  
  13. Install the vibration damper and tighten the bolts to 14 ft. lbs. (20 Nm).
  14.  
  15. Install the chain tensioner slipper and tighten the bolt to 51 ft. lbs. (69 Nm). Make sure that the slipper moves smoothly.
  16.  
  17. Install the crankshaft timing gear.
  18.  
  19. Install the timing chain and the camshaft timing gear as follows:
    1. Install the timing chain on the camshaft timing gear with the bright link aligned with the timing mark on the camshaft timing gear.
    2.  
    3. Install the timing chain on the crankshaft timing gear with the other bright link aligned with the timing mark on the crankshaft timing gear.
    4.  
    5. Tie the timing chain with a cord to make sure that it doesn't come loose.
    6.  

  20.  
  21. Install the timing chain cover.
  22.  
  23. Remove the cord from the chain.
  24.  
  25. Install the drive belt idler pulley and tighten the bolt to 32 ft. lbs. (43 Nm).
  26.  
  27. Install the crankshaft pulley. Align the pulley set key with the key groove of the pulley and slide on the pulley. Install the pulley bolt and tighten to 304 ft. lbs. (412 Nm).
  28.  
  29. Install the No. 1 and the No. 2 oil pans.
  30.  
  31. Install the bolts holding the No. 1 oil pan to the transmission housing. Tighten the bolts to 53 ft. lbs. (72 Nm).
  32.  
  33. Install the oil level sensor with a new gasket and tighten the bolts to 48 in. lbs. (5 Nm).
  34.  
  35. Connect the oil cooler pipe bracket to the No. 1 oil pan.
  36.  
  37. Install the cylinder head.
  38.  
  39. Install the water pump and tighten the bolts to 15 ft. lbs. (21 Nm).
  40.  
  41. Connect the No. 2 radiator hose to the water inlet. Install the nuts holding the radiator pipe to the No. 1 oil pan and tighten to 15 ft. lbs. (21 Nm).
  42.  
  43. Install the A/C compressor bracket and tighten the bolts to 27 ft. lbs. (37 Nm).
  44.  
  45. Install the A/C compressor and tighten the bolts to 18 ft. lbs. (25 Nm). Install and adjust the drive belt.
  46.  
  47. Install the radiator.
  48.  
  49. Refill the engine oil and the engine coolant.
  50.  
  51. Connect the negative battery cable.
  52.  
  53. Start the engine, check for leaks, and check the ignition timing.
  54.  
  55. Install the engine under cover.
  56.  

 
label.common.footer.alt.autozoneLogo