Opel & Chevrolet Tensioner Pulley Displacement

October 26th, 2023
Opel & Chevrolet Tensioner Pulley Displacement Fig. A

Opel & Chevrolet Tensioner Pulley Displacement

October 26th, 2023
Opel & Chevrolet Tensioner Pulley Displacement Fig. B
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Continental has determined how some tensioner pulley outer rings become displaced, and what should be done to correct the problem.


Problem
Noise from the timing belt drive. Misalignment in the belt drive. Timing belt jumps or is torn. One edge of the timing belt is worn down along its entire length. The tensioning spring of the tensioning pulley has been partially or completely ground through.

Cause
The belt drive is subject to unacceptable tension and heats up excessively. Incorrect tensioning results in the timing belt becoming misaligned and running to one side. Due to the excessive heating, the running surface of the tensioning pulley separates and shifts on the ball bearing (Fig. B). As a result, the tension spring is worn through (Fig. A).

Solution
Depending on the engine code, the tensioning pulley must be finally tightened either at 0° or 60° before TDC. The vehicle manufacturers installation instructions must be followed for the correct engine code.

Engine Codes Affected
The engine codes affected are A17 DT/DTC/DTE/DTF/DTI/DTJ/DTL/DTN/DTR/DTS, Z17 DT/DTH/DTL/DTJ/DTR, LKR, and LUD.

 
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