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Engine cylinder head, valve gear > < Crankshaft dimensions

Leon Mk1

Semiautomatic tensioning roller for toothed belt: checking
Semiautomatic tensioning roller for toothed belt: checking
–  Press hard on the toothed belt with thumb -arrow-. The notch and projection -arrow- should move.
–  Release pressure on toothed belt.
   
Engine codes AGP, AQM
The tensioning roller should follow the movement of the toothed belt.
  Note!
The tensioning roller should not return to its original position after releasing pressure on the toothed belt.
  N13-0378
Engine codes AGR, ALH, ASV
The tensioning roller should return to its original position (the notch and the projection coincide again).
  E13-0084

Engine cylinder head, valve gear > < Crankshaft dimensions