Timing Belt Tensioner: Testing and Inspection

Semi-automatic toothed belt tensioning roller, checking

Installation position





The retainer - arrow - must engage in the cut-out in the cylinder head.

Condition
^ Engine must be no more than warm to touch.

Work sequence
- Position engine at TDC for cylinder No. 1.





- Depress toothed belt with forceful thumb pressure. Indicator - 2 - must move.
- Relieve pressure on toothed belt and turn crankshaft two rotations in engine direction of rotation until crankshaft is set to TDC No. 1 cylinder again. When doing this it is important that last 45° (1/8 turn) is completed without interruption.
- Tensioning roller must return to original position (notch - 1 - and indicator - 2 - align again.

Note:
^ Use a mirror to check!