conducted as chapter entitled “Tension
measurement
●
The fixed lower part of the auto tensioner
has a minimum/maximum indicator.
●
If the indicator is found to be beyond the
minimum/maximum range upon visual in-
spection, the belt layout components must
be checked.
Tension measurement
– Lower indicator arm (1) into the measuring
device.
– Place guide (3) between two belt pulleys on
the V-belt (2). The stop must be at the side.
– Press the button (4) at right angles to the V-
belt (2) evenly until you hear or feel the
spring snap in.
– Lift the measuring device carefully without
altering the position of the indicator arm (1).
– Read the measured value at the point of in-
tersection (arrow), scale (5)and indicator
arm (1).
– Retighten and repeat the measurement if
necessary.
Replacing the V-belt
– Press tensioning roller with socket wrench
in the direction of the arrow until a retaining
pin can be fixed in the assembly bore. The
V-ribbed belt is now tension free
– First pull the V-ribbed belt off the smallest
roller or off the tensioning roller.
– Mount new V-ribbed belt.
– Retain tensioning pulley (1) using the pin
wrench and remove the holding pin.
– Tension V-ribbed belt using the tensioning
roller and socket wrench. Check whether
the V-ribbed belt is correctly in its guide.
Tension pulley
Retaining pin
Assembly bore
1
2
3
Maintenance
5
Maintenance service
12960128011601 EN - 03/2020