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BELTS
• Check belt tension (Daily). Inspect for wear and alignment (Monthly).
For details on replacing belts, see Servicing Belts section of this manual.
NOTICE
Tension on newly installed belts drops rapidly
during the first hours of operation. Check and
adjust frequently during the first 24 hours.
Do Not over tighten belts. An overly tight belt
can cause damage to the belt and bearings.
CHECKING BELT TENSION
• Remove belt guard cover.
Note: Belt should be in normal operating
position.
• Use a metal bar or screwdriver as a
measuring device to apply force to the belt.
Place the device at the center of the belt
span between sheaves. Use the belt guard
housing as a straightedge or lay a straight
edge across both sheaves. Without applying
force, make a mark on the measuring device
where it meets or intersects with the
straightedge. Next, apply specified pounds
of force to the belt and again mark the point
where the measuring device meets the
straightedge. Then measure the distance
between the two marks on the measuring
device and compare to the recommended
deflection measurement. See illustration.
• If the measurement is more than
recommended deflection, the belt tension is
too loose If the measurement is much less
than recommended deflection, the belt
tension is too tight. Follow procedure for
Belt Tension Adjustment.
CHECKING SHEAVE ALIGNMENT
• Place a straightedge against the outside face
across both sheaves. Check that both sheave
surfaces are flush with the straightedge and
aligned properly. See illustration.
• To align sheaves, follow procedure for Belt
Tension Adjustments.
SP6016
MACHINE MAINTENANCE
29
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