Timing Belt Tensioner: Testing and Inspection

Semi-automatic toothed belt tensioning roller, checking
Engines: AEG, APK, AQY, AVH, AZG, BEJ, BER, BEV, BHP

Special tools and equipment





- T10020 Two hole pin wrench

Engine: BBW

Special tools and equipment





- T10004 Two hole pin wrench





- Angled retainer (arrow) must locate in cut-out on cylinder head.

Requirements
- Engine must only be hand touch warm.

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





Engines: AEG, APK, AQY, AVH, AZG, BEJ, BER, BEV, BHP

- With forceful thumb pressure, depress toothed belt. The indicator -2 must move.





Engine: BBW

- With forceful thumb pressure, depress toothed belt. The indicator -2 must move.

Continue for all engines
- Release thumb pressure on toothed belt and turn crankshaft two turns in engine direction of rotation until engine is again at TDC No.1 cylinder. It is essential that last 45° (1/4 turn) is performed without stopping.
Tensioning roller must return to its original position. (Notch -1- and indicator -2- are again aligned).

Note: Use a mirror when checking.