Timing Chain Idler Sprocket Removal

Special Tools 

EN-51141  Intermediate Drive Gear Fixing Tool

For equivalent regional tools, refer to Special Tools .

1. Courtesy of GENERAL MOTORS COMPANY

   NOTE:

   Depending on the crankshaft, two different marks (1) and (3) or none (2) can be located on the crankshaft sprocket.

   Mark the crankshaft sprocket align with the timing chain idler sprocket if there is no mark.

2. Courtesy of GENERAL MOTORS COMPANY

   Install the EN-51141  fixing tool (1) to the timing chain idler sprocket (2).

3. Courtesy of GENERAL MOTORS COMPANY

   Remove the 3 timing chain idler sprocket bolts (1).

4. Remove the timing chain idler sprocket bearing plate (2).
NOTE:

If the timing chain idler sprocket is reused, do not remove the EN-51141  fixing tool (5).

5. Remove the timing chain idler sprocket (4).
6. Remove the gear shaft distributor (3).