Specifications

Problem:
The tensioning pulley fails after a short period of operation, with
the running surface possibly having separated from the bearing
core. The running surface usually shows severe rubbing marks.
The back of the timing belt is often substantially damaged or
even completely worn through as a result of heat action.
Cause:
Because the eccentric has been rotated in the wrong direction,
the tensioning pulley has moved to a position it was not
intended to reach and made contact with a protruding edge
in the drive.
As a result the tensioning pulley has mechanically seized, either
completely or partially, and the belt has overheated on the run-
ning surface. The level of damage depends on the running time.
Solution:
Always install the timing belt exactly according to the
manufacturer’s instructions. In particular, comply with
the rotational direction of the eccentric for tensioning
(counterclockwise here). Otherwise the tensioning pulley
can come into contact with a protruding edge which can
result in premature failure.
Excerpt from the manual
Observe rotational direction
Damaged running surface
CT 1045 K1
Renault 1.2 16V
ContiTech Technical Info 8
Installation tip – tensioning pulley