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Figure 3
24
Maintenance
sion 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 slipping. Never apply belt dress-
ing as this will damage the belt and cause early failure. A Dodge
Tension Tester is an alternate method for tensioning V-belts. Check with
you local belt supplier.
SHEAVE
Sheave alignment
• The motor sheave is to be positioned as close as possible to the motor
in order to minimize stress on the motor bushings.
• The motor and fan sheaves may have grooves that are not used. The
bottom surface of the motor and fan sheaves must be aligned within
⁄
" of each other and level within
1
8
affect belt and sheave life.
• Alignment can be achieved by placing a straight edge across the
sheaves making sure that it is level and measuring down to the bot-
tom surface of both sheaves at four points.
• The belt is to be located in the grooves closest to the motor center-
line.
FAN SHAFT
STRAIGHT EDGE
⁄
° (
⁄
" in 12) in order to not adversely
1
1
2
8
®
V-Belt
SHEAVE
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