American Sanders 07170A, Operator'S Manual

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12
Maintenance
EN
Figure 8.1
Figure 8.2
Wear Indicator
DRIVE BELT
Replace the drive belt every 1000 hours or on the 3rd set of carbon
brushes. Replace lower motor bearing at every drive belt change
interval. Replace upper motor bearing every 1500 hours.
MOTOR BEARINGS
Replace lower motor bearing at every drive belt change interval.
Replace upper motor bearing every 1500 hours.
ABRASIVE DRIVER BEARINGS
The bearings should not need replacement for the life of the machine.
CARBON BRUSHES (FIGURES 8.1 AND 8.2)
Replace the carbon brushes (see figure 8.1) every 350-400 hours
depending on use. Replace both brushes if either has worn to the
wear indicator (see figure 8.2). Have the commutator turned and
undercut every 3rd replacement.