User manual

27
A Dodge
®
V-Belt Tension Tester is an alternate method for tensioning V-belts.
Check with you local belt supplier.
See Figure 3 for MH Fluid Cooler models MHF706 and MHF707.The belts are
adjusted by turning the threaded rod. Before tightening or loosening the belt,
the double nuts holding the motor support in place must be loosened.There
are two jam nuts at the end of the rod next to the casing. Turn the nut closest
to the end of the rod to tighten the belt. Turn the other nut to loosen the belt.
After achieving proper tension tighten the double nuts located on the fan side
of the motor support against the motor support to maintain belt tension, then
retighten the motor support nuts. Ideal tension is the lowest tension at which
the belt will not slip under peak load conditions. Check tension frequently
during the first 24-48 hours of run-in operation. Overtensioning shortens belt
and bearing life. Keep belts free from foreign material which may cause slip-
ping. Never apply belt dressing as this will damage the belt and cause early
failure. A Dodge
®
V-Belt Tension Tester is an alternate method for tensioning
V-belts. Check with you local belt supplier.
New belts (operating less than 8 hours) should be tensioned to the maximum
value. Tension after this period should use no less than the minimum value. If
the belt span was measured in inches, then use the pounds of force values.
If the belt span was measured in centimeters, then use the kilograms of force
values. If specific tensioning instructions are provided with your tensioning
tool, those instructions should be used instead.
Maintenance
➠
Figure 3
SHEAVE
FAN SHAFT
SHEAVE
STRAIGHT EDGE