V−belts
131
V−belts
Checking condition
D Check V−belts for cracks, oil, overheating and
wear
D Change demaged V−belts
If, in the case of a multiple belt drive , wear or
differing tensions are found, always replace the
complete set of belts.
Checking tension
Use V−belt tension tester to check V−belt tension.
D Lower indicator arm À into the scale
D Apply tester to belt at a point midway between
two pulleys so that edge of contact surface Á is
flush with the V−belt
D Slowly depress pad  until the spring can be
heard to disengage. This will cause the indica-
tor to move upwards
If pressure is maintained after the spring has dis-
engaged a false reading will be obtained!
Reading of tension
D Read of the tensioning force of the belt at the
point where the top surface of the indicator arm
À intersects with the scale
D Before taking readings make ensure that the
indicator arm remains in its position
If the value measured deviates from the setting
value specified, the V−belt tension must be cor-
rected.
1
2
3
Drive
Tensioning forces according to
the kg graduation on the te-
ster
belt
New installation
When ser-
width
Installation
After 10
min. run-
ning time
vicing after
long run-
ning time
2/3VX 90−100 70−80 60
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