Pellerin Milnor Corporation 35
Typical Steps to Replace Pulleys and Belts
BNUUUM02.C11 0000274652 A.4 A.2 2/4/20 8:08 AM Released
Preparation Remove power from the machine.
Belt removal Use the belt tension mechanism to decrease the distance between the pulleys until
you have sufficient clearance. Figure 13 and Figure 14 show typical belt tension mechanisms.
Pulley removal On the typical type of pulley and bushing shown in Figure 11 , use the push-off
holes to remove the pulley easily. On special types of pulleys (example: large drive pulley
and cone), look at the parts document in the maintenance manual for more data. Some pulleys
are too heavy for only one person to hold.
Pulley installation Figure 11 shows the typical pulley and bushing components. Make sure that
you keep run-out tolerances when you assemble and tighten the components.
Belt installation Decrease the distance between the pulleys to put the belt on easily. Assemble
the components carefully. Make sure that the components are aligned. Adjust the belt tension
so the belt is tight.
Test Before you connect power again, make sure that you remove all tools. Operate the ma-
chine with a full load. If the belts slip, increase belt tension with the machine shut down and
power removed. Then test again. Make sure that the machine is safe before you put it into reg-
ular operation.
Drive Assemblies
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