Toyota Pick-ups/Land Cruiser/4Runner 1970-1988

Timing Gears

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REMOVAL & INSTALLATION



F, 2F and 3F-E Engines

See Figures 1, 2 and 3

This procedure contains camshaft removal and installation
  1. Perform the cylinder head and timing cover removal procedures, as previously outlined.
  2.  
  3. Slip the oil slinger off the crankshaft.
  4.  
  5. Remove the camshaft thrust plate retaining bolts by working through the holes provided in the camshaft timing gear.
  6.  
  7. Remove the camshaft timing gear (with the camshaft attached) through the front of the cylinder block. Support the camshaft while removing it, so as not to damage its bearings or lobes.
  8.  

The timing gear is a press-fit and cannot be removed without removing the camshaft.

  1. Inspect the crankshaft timing gear. Replace it if it has worn or damaged teeth.
  2.  
  3. To remove it, remove the sliding key from the crankshaft. Withdraw the timing gear with a gear puller.
  4.  

To install:
  1. Use a large piece of pipe to press the timing gear onto the crankshaft. Lightly and evenly tap the end of the pipe until the gear is in its original position.
  2.  
  3. Apply a coat of engine oil to the camshaft journals and bearings.
  4.  
  5. Insert the camshaft into the block.
  6.  

Use care not to damage the camshaft lobes, bearings, or journals.

  1. Align the mating marks on each of the gears as illustrated.
  2.  
  3. Slip the camshaft into position. Tighten the camshaft thrust plate bolts to 9 ft. lbs. (12 Nm).
  4.  
  5. Check the gear backlash with a feeler gauge, inserted between the crankshaft and the camshaft timing gears. The backlash should be no more than 0.05-0.13mm. If it exceeds this, replace one or both of the gears, as required.
  6.  
  7. Check the gear runout with a dial indicator. Runout, for both gears, should not exceed 0.15mm. If it does, replace the gear.
  8.  
  9. Install the oil nozzle, if it was removed, by screwing it in place with a screwdriver and punching it in two places, to secure it.
  10.  

Be sure that the oil hole in the nozzle is pointed toward the timing gear before securing it.

  1. Install the oil slinger on the crankshaft.
  2.  
  3. Install the timing gear cover and cylinder head as outlined above.
  4.  



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Fig. Fig. 1: Crankshaft gear timing mark alignment-F, 2F- and 3F-E engines



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Fig. Fig. 2: Timing gear alignment-F, 2F- and 3F-E engines



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Fig. Fig. 3: Oil nozzle installation-F, 2F- and 3F-E engines

 
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