User-Maintenance; Lubrication; Replacing Drive Belt - Powermatic 31A Instrucciones De Funcionamiento Y Manual De Piezas

User-Maintenance

Before doing maintenance
on the sander, disconnect it from the
electrical supply by pulling out the plug or
switching off the main switch!
comply may cause serious injury.
Make periodic or regular inspections to ensure
that your sander is properly adjusted, that all
screws are tight, the belt is in good condition,
that dust has not collected in the motor or
electrical enclosures and there are no loose or
worn electrical fittings or wiring.
If the power cord is worn, cut, or damaged in
any way, have it replaced immediately.
Keep the fence and table surfaces clean and
free of rust.

Lubrication

Periodically lubricate the following parts on the
31A Sander:
Use a good quality, non-hardening grease on:
• Idler slide (Figure 27)
• Table trunnion (shown in Figure 11)
Use SAE No. 10 Oil on these:
• Internal threads of table locking wheels (A,
Figure 16)
• belt arm index pin (shown in Figure 5)
All bearings on the Model 31A Sander are
sealed for life and require no lubrication.

Replacing Drive Belt

1. Remove disc table and loosen front panel
(see Figure 10).
2. Remove disc abrasive to access screw at
center of disc.
3. Remove screw and washer, and remove
disc from shaft.
4. Raise motor platform high enough to
remove drive belt from pulleys (see Figure
6).
5. Install new belt and tension it by lowering
motor plate.
6. Reassemble disc, washer, screw, and
tighten front panel.
NOTE: New belts may have a tendency to
stretch slightly during initial use. Re-check belt
tension after first few hours of operation.
Failure to
19
Figure 27