Milnor 42044SR2, Mechanical Parts And Service

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Pellerin Milnor Corporation
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Drive Pulley and Belt Maintenance
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Figure 14. Examples of drives this instruction applies to: one or more V-belts, attached V-belts
and tooth belts
NOTICE: "Remove power from the machine" means use the necessary safety procedure
for your location. In the USA, this is the OSHA lockout/tagout (LOTO) procedure. More
local requirements can also apply.
WARNING:
Risk of Injury or death —
A machine in operation without safety guards
is dangerous. Drive belts can pull in your body or clothing.
�
Remove power from the machine when you do work on the
mechanisms.
�
Stay out of the machine frame when you do a test on the machine.
�
Replace all covers before you put the machine into operation.
TIP: Read these documents from the Gates Corporation (
www.gates.com
) to know
more about pulley and belt maintenance: "Belt Drive Preventive Maintenance & Safety
Manual" and "Preserve your investment - Check Engine Belts Often."
Pulley Requirements
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• Keep pulleys free of dirt, oil and other contamination.
• Replace pulleys with groove damage.
• Align pulleys and shafts.
• Keep run-out in tolerance.
Condition of Grooves on Pulleys
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Replace a pulley if:
• the grooves have burrs, cracks, or worn areas that can cause damage to the belts.
• the belts touch the bottom of the groove at any point ( Figure 15 ).
Drive Assemblies