Volkswagen Workshop Service and Repair Manuals > Golf Mk4 > Power unit | 4-cylinder injection engine (1.6 l engine, roller rocker fingers), Mechanics | Engine cylinder head, valve gear | Cylinder head | Checking semi-automatic toothed belt tensioning roller

Checking semi-automatic toothed belt tensioning roller

Installation position

l	The retainer -arrow- must locate in notch in cylinder head.

l	The engine must be no more than warm to touch.

Test procedure

–	Position crankshaft at TDC for cylinder No. 1.

–	Press toothed belt forcefully with thumb. The indicator -2- must move.

–	Release toothed belt and turn crankshaft two full revolutions in direction of engine rotation until engine is again at TDC No. 1 cylinder. It is important that the last 45° of rotation (¹/₈ turn) is performed without interruption.

–	The tensioning roller must return to its initial position. (Notch -1- and indicator -2- align again.)

Note

Check using a mirror.

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