Jeep Wagoneer/Commando/Cherokee 1984-1998

Timing Belt

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Removal & Installation



See Figures 1, 2, 3 and 4

This applies to 2.1L diesel engines only.

Jeep recommends timing belt replacement at 55,000 miles, but most belt manufacturers recommend intervals anywhere from 45,000 miles (72,500 km) to 90,000 miles (145,000 km).

  1. Disconnect the negative battery cable.
  2.  
  3. Remove the timing belt cover.
  4.  
  5. Install sprocket holding tool MOT 854 or equivalent and remove the camshaft sprocket retaining bolt. Remove the special tool.
  6.  
  7. Loosen the bolts and move the chain tensioner away from the timing belt. Tighten the tensioner bolts.
  8.  



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Fig. Fig. 1: Timing belt tensioner adjusting bolt (Z)

  1. Remove the timing belt from the sprockets. Inspect the belt for damage or wear, refer to timing belt inspection below.
  2.  
  3. If it is necessary to remove the fuel injection pump sprocket, use tools BVI 28-01 and BVI 859, or equivalent.
  4.  

To install:

The following installation steps must be followed, exactly!

  1. Remove the access plug in the block, on the left side, and install the holding tool, MOT 861 in the hole. Rotate the crankshaft slowly, clockwise, until the tool drops into the TDC locating slot in the crankshaft counterweight.
  2.  



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Fig. Fig. 2: TDC locating tool

Don't use this tool as a crankshaft holding tool. When tightening or loosening geartrain fasteners, use a flywheel holding tool, such as tool MOT 582.

  1. Install sprocket holding tool, MOT 854 to retain the camshaft and injection pump sprockets. Make sure that the timing marks are positioned as shown.
  2.  



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Fig. Fig. 3: Camshaft and injection pump timing marks aligned

  1. Install the timing belt. There should be a total of 19 belt teeth between the camshaft and injection pump timing marks.
  2.  



Click image to see an enlarged view

Fig. Fig. 4: Indexing the timing cover slots with the sprockets

  1. Temporarily position the timing cover over the sprockets. The camshaft and injection pump timing marks must index with the pointers in the cover's timing slots.
  2.  
  3. Remove the cover.
  4.  
  5. Remove the holding tool, MOT 854.
  6.  
  7. Make sure that the timing belt tensioner bolts are 1 / 2 turn loose, maximum.
  8.  
  9. The tensioner should, automatically, bear against the belt giving the proper belt tension. Tighten the tensioner bolts.
  10.  
  11. Remove the TDC locating tool and install the plug.
  12.  
  13. Rotate the crankshaft, slowly, CLOCKWISE, two complete revolutions.
  14.  

NEVER rotate the crankshaft counterclockwise while adjusting belt tension.

  1. Loosen the tensioner bolts 1/8 turn, maximum, then tighten them again.
  2.  
  3. Check the belt deflection at a point midway between the camshaft and injection pump sprockets. The belt should deflect 1.37 inches (35mm).
  4.  
  5. Install the timing belt cover.
  6.  

 
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