GM Camaro 1982-1992 Repair Guide

Timing Chain Or Gear

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REMOVAL & INSTALLATION



Except 2.5L Engine

See Figures 1, 2 and 3



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Fig. Fig. 1: Timing marks aligned with No.1 piston at TDC



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Fig. Fig. 2: Timing marks aligned with No.4 (V6) or No.6 (V8) piston at TDC



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Fig. Fig. 3: Apply sealer to these points prior to assembly

  1. Remove the timing gear cover.
  2.  
  3. With the timing gear cover removed, rotate the engine as follows:
    1. Place the #1 piston at T.D.C with the marks on the camshaft sprocket at 6 O'clock and the crankshaft sprocket at 12 0:clock.
    2.  
    3. Make sure the #1 cylinder is on the compression stroke with both valves closed.
    4.  

  4.  
  5. Remove the bolts holding the camshaft sprocket to the camshaft. Pull the camshaft sprocket forward.
  6.  
  7. If the camshaft sprocket will not move, give the sprocket a light blow with a plastic mallet, on the lower edge. Remove the sprocket and timing chain.
  8.  
  9. Remove the crankshaft gear using a gear puller. Make sure the keyway does not fall into the oil pan.
  10.  

To install:
  1. Install the crankshaft gear about 1 / 2 inch from the crankshaft stop.
  2.  
  3. Position the chain onto the cam gear, then slide the chain and cam gear onto the crank gear and camshaft, keeping the timing marks aligned at all times.
  4.  
  5. Install the camshaft gear retaining bolts and tighten.
  6.  
  7. Turn the crankshaft over two revolutions with the crankshaft bolt to check to see if the timing marks are perfectly aligned. If not, remove the cam gear and realign.
  8.  

2.5L Engine

See Figure 4



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Fig. Fig. 4: Timing gear alignment - 2.5L

The 4-cylinder engine uses a gear driven camshaft. To remove the timing gear, refer to the camshaft removal section. The camshaft must be removed from the engine so that the timing gear may be pressed from the shaft.


WARNING
The thrust plate must be positioned so that the woodruff key in the shaft does not damage it when the shaft is pressed out of the gear. Properly support the hub of the gear or the gear will be seriously damaged. The crankshaft gear may be removed with a gear puller while in place in the block.

 
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