Toyota Pick-ups, Land Cruiser, and 4 Runner 1997-00

Timing Chain Cover and Seal

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REMOVAL & INSTALLATION



1FZ-FE Engine

This is a lengthy procedure requiring careful work. Make sure all timing marks are properly aligned before start-up.



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Fig. A seal driver is highly recommended when installing a new seal into the cover



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Fig. Engage the gear of the oil pump rotor with the gear of the oil pump drive gear and install the front cover and oil pump assembly1FZ-FE engine

  1. Disconnect the negative battery cable.
  2.  
  3. Raise and safely support the vehicle.
  4.  
  5. Drain the engine oil and the engine coolant.
  6.  
  7. Remove the engine undercover.
  8.  
  9. Remove the radiator.
  10.  
  11. Disconnect and remove the A/C compressor and the bracket, but do NOT disconnect the refrigerant lines.
  12.  
  13. Remove the radiator pipe by disconnecting the radiator hose from the water inlet.
  14.  
  15. Remove the water pump and the gasket.
  16.  
  17. Remove the cylinder head using the procedure found in this section.
  18.  
  19. Disconnect the oil cooler pipe bracket from the No. 1 (upper half of the two-piece assembly) oil pan.
  20.  
  21. Remove the oil level sensor.
  22.  
  23. Remove the bolts holding the No. 1 (upper half) oil pan to the transmission housing.
  24.  
  25. Remove the No. 2 (lower half of the assembly) and No. 1 oil pans.
  26.  
  27. Using SST 0921358012 and 0933000021, or equivalent, remove the pulley bolt. Remove the crankshaft pulley.
  28.  
  29. 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. (0.30mm).
    4.  
    5. If the thrust clearance is greater than maximum, replace the oil pump driveshaft gear and/or timing chain cover.
    6.  

  30.  
  31. Remove the drive belt idler pulley.
  32.  
  33. Remove the bolts securing the timing chain cover, and then remove the cover. Be sure to note the locations of the different sized bolts.
  34.  

To install:

  1. Clean the gasket mating areas well.
  2.  
  3. Apply Formed-In-Place Gasket (FIPG) sealer to the timing chain cover and install the cover assembly.
  4.  
  5. Engage the gear of the oil pump drive rotor with the gear of the oil pump drive gear, and install the oil pump and cover assembly.
  6.  
  7. Three different length bolts are used on the front cover. Make sure they're in the correct locations. Tighten the bolts to 15 ft. lbs. (21 Nm).
  8.  
  9. Remove the cord from the chain.
  10.  
  11. Install the drive belt idler pulley and tighten the bolt to 32 ft. lbs. (43 Nm).
  12.  
  13. 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.  

  14.  
  15. Install the No. 1 and the No. 2 oil pans.
  16.  
  17. Install the bolts holding the No. 1 oil pan to the transmission housing. Tighten to 53 ft. lbs. (72 Nm).
  18.  
  19. Install the oil level sensor with a new gasket. Tighten the bolts to 48 inch lbs. (5 Nm).
  20.  
  21. Connect the oil cooler pipe bracket to the No. 1 oil pan.
  22.  
  23. Install the cylinder head using the procedures found in this section.
  24.  
  25. Install the water pump and tighten the bolts to 15 ft. lbs. (21 Nm).
  26.  
  27. Attach the No. 2 radiator hose to the water inlet. Install the nuts holding the radiator pipe to the No. 1 oil pan, and then tighten to 15 ft. lbs. (21 Nm).
  28.  
  29. Install the A/C compressor bracket, tighten the bolts to 27 ft. lbs. (37 Nm).
  30.  
  31. Install the A/C compressor; tighten the bolts to 18 ft. lbs. (25 Nm). Install and adjust the drive belt.
  32.  
  33. Install the radiator.
  34.  
  35. Refill the engine oil and the engine coolant.
  36.  
  37. Connect the negative battery cable.
  38.  
  39. Start the engine, check for leaks, and check the ignition timing.
  40.  
  41. Install the engine undercover.
  42.  
  43. Add any fluids as required.
  44.  

2RZ-FE and 3RZ-FE Engines

This is a difficult and lengthy procedure requiring removal of many components including the front differential assembly and the cylinder head. This procedure can also be performed with the engine out of the vehicle, which may be an option, depending on the equipment and facilities available. If other heavy engine work is required (for example, a failed timing chain may have caused valve/piston damage) it may just be easier to remove the engine as an assembly and perform the work on a suitable engine stand.

The following procedure is based on Toyota's in-frame procedure.



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Fig. Numerous components must be removed to service the timing chain cover2RZ-FE and 3RZ-FE engines



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Fig. Use care to install the timing chain cover bolts in their proper locations. Torque to specification2RZ-FE and 3RZ-FE Engines

  1. Disconnect the negative battery cable.
  2.  
  3. Raise and safely support the vehicle.
  4.  
  5. Drain the engine coolant and the engine oil.
  6.  
  7. Remove the cylinder head.
  8.  
  9. Remove the radiator.
  10.  
  11. On 4WD vehicles, remove the front differential.
  12.  
  13. Remove the oil pan.
  14.  
  15. If equipped with power steering, remove the power steering belt.
  16.  
  17. If equipped with A/C, remove the A/C belt, compressor, and the bracket.
  18.  
  19. Remove the fluid coupling with the fan and the water pump pulley, as follows:
    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.  

  20.  
  21. Remove the crankshaft pulley.
  22.  
  23. Remove the water bypass pipe.
  24.  
  25. Remove the fan belt adjusting bar. With power steering, remove the lower power steering bracket.
  26.  
  27. Disconnect the heater water outlet pipe.
  28.  
  29. Remove the chain cover assembly.
  30.  

To install:

  1. Remove the old cover gaskets and install new gaskets.
  2.  
  3. Slide the timing chain cover assembly over the dowels and the pump spline. Tighten the 8mm bolts to 9 ft. lbs. (13 Nm) and the 10mm bolts to 29 ft. lbs. (13 Nm).
  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 power steering belt.
  20.  
  21. Apply Formed In-Place Gasket (FIPG) sealer 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.  

SEAL REPLACEMENT



Cover Removed
  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-bladed tool.
  4.  
  5. It is a good idea to remove the oil pump from the timing cover and replace the O-ring.
  6.  



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Fig. Remove the seal with a flat-blade tool and hammer



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Fig. Install the seal using a proper sized driver

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 0922350010/60010 or equivalent, and a hammer. Do this until the seal surface is flush with the cover edge.
  6.  
  7. Install the cover; tighten the bolts as specified for your engine.
  8.  
  9. If the oil pump was removed, install a new O-ring behind the pump prior to installation.
  10.  

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



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



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Fig. Drive the seal flush against the cover edge

To install:

  1. Apply multi-purpose grease to the new oil seal lip.
  2.  
  3. Tap the seal into place with SST 0922350010/60011 or equivalent seal driver, and a hammer. Do this until the seal surface is flush with the cover edge.
  4.  
  5. Install the oil pump with a new O-ring.
  6.  

 
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