Half Automatic Toothed Belt TENSIONING Roller, Checking

WARNING: This page is about a different car, the 2014 Volkswagen Jetta, 2013 Volkswagen Jetta, 2012 Volkswagen Jetta, and 2011 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.

Special tools and workshop equipment required

Toothed Belt Tensioner T10020

Test Prerequisites

Fig 1: Locating Angled Retainer & Cut-Out On Cylinder Head

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

The bracket -arrow- must engage into the cut-out in the cylinder head.
The engine must be no more than warm to touch.

Perform the Following

-- Turn the engine to upper TDC cylinder 1.

-- Place a load on the toothed belt with strong thumb pressure.

The arrow -2- must move.

Fig 2: Releasing Tension On Toothed Belt Until Notch And Indicator Align (Engine Codes AEG, AVH, AZG, BEV)
Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Release load on toothed belt again.

-- Turn crankshaft over twice in engine running direction until the crankshaft is at upper Top Dead Center (TDC) cylinder one again.

For this it is necessary that the last 45° (¹ /₈ rotation) is turned without interruption.
The tensioning roller must return to its initial position. The notch -1- and the pointer -2- must align again.

NOTE:

Use a mirror to check.