1
2
4
3
V-belts
125
Checking condition
Fig. 1
D Check V-belts for cracks, oil, overheating and
wear
D Change demaged V-belts
Checking tension
Fig. 2
Use a V-belt tension tester to check V-belt tension.
D Lower indicator arm À into the scale
Fig. 3
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
Maintaining pressure after the spring has disenga-
ged will result in a false reading!
Taking tension reading
Fig. 4
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 correc-
ted.
1
2
3
Tensioning forces according to
the kg graduation on the
tester
Belt
New installation
width
Installation
After
10 mins.
running
time
Service af-
ter exten-
ded run-
ning time
2/3VX 90 90 75
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