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

Camshaft Sprockets or Pulleys

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REMOVAL & INSTALLATION



22R and 22R-E Engines

See Figures 1 through 6

The cam sprocket is removed from the camshaft as part of the rocker assembly removal. If the sprocket is to be removed from the chain, support the chain with a piece of wood, keeping the chain engaged to the lower sprocket. If the chain comes off the bottom sprocket, the timing chain covers must be removed and the chain correctly installed. Refer to Timing Chain Removal and Installation in this section.

  1. Remove the valve cover.
  2.  
  3. Turn the crankshaft until the No. 1 cylinder position is set at TDC compression. Matchmark the sprocket and chain.
  4.  



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Fig. Fig. 1: Matchmark the chain and sprocket

  1. Remove the halfmoon plug from the front of the cylinder head.
  2.  



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Fig. Fig. 2: Remove the halfmoon plug located at the front of the cylinder head

  1. Unbolt the cam sprocket.
  2.  



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Fig. Fig. 3: Loosen and remove the drive gear bolt

  1. Remove the distributor drive gear and camshaft thrust plate.
  2.  



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Fig. Fig. 4: Pull the bolt and gear off the cam

  1. Remove the cam sprocket. Using a piece of wire, support the chain to keep it in position for sprocket installation.
  2.  



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Fig. Fig. 5: Lift the chain up, then slide the gear off the cam



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Fig. Fig. 6: Secure the chain in place with a length of wire

To install:
  1. While holding up on the sprocket and chain, turn the crankshaft until No. 1 and No. 4 cylinders reach TDC.
  2.  
  3. Place the sprocket over the camshaft dowel. If the chain does not seem long enough on replacement, turn the crankshaft back and forth while pulling up on the chain and sprocket.
  4.  
  5. Place the distributor drive gear and camshaft thrust plate over the chain sprocket. Tighten the bolt to 58 ft. lbs. (78 Nm).
  6.  
  7. Install the halfmoon plug on the cylinder head.
  8.  
  9. Install the valve cover.
  10.  

3VZ-E Engines
  1. Remove the timing belt.
  2.  
  3. Use a properly installed counter-holding tool, remove the pulley bolt, the pulley and the match pin. Note that the left and right pulleys are different; label them to avoid confusion at reassembly.
  4.  


WARNING
Do not attempt to use the timing belt to hold tension on the pulley while loosening or tightening the retaining bolt.

To install:
  1. Align the camshaft match pin hole with the marks on the upper rear timing belt cover. This places the pin holes straight up.
  2.  
  3. Install the timing pulleys, observing correct placement of the left and right pulleys. Install the bolts, but do not install the match pin. Check that the bolt head is not touching the pulley (Its not completely tight yet). Align the timing mark on each pulley with the marks on the No. 3 timing cover.
  4.  
  5. Install the timing belt, following the procedures given in this section. After the engine has been rotated two full revolutions and the timing marks checked, tighten the idler pulley bolt.
  6.  
  7. Remove the camshaft timing pulley bolts. Align the pulley match pin hole with the hole in the camshaft; install the match pin. Reinstall the camshaft pulley bolts.
  8.  
  9. Using a properly installed counter-holding tool, tighten the pulley bolts to 80 ft. lbs. (108 Nm). Take great care not to nick or damage the timing belt.
  10.  
  11. Continue with the re-installation of the timing belt.
  12.  

 
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