Wilton 4300A, 4200A, 4400A manual Maintenance, Belt Replacement

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Maintenance

Belt Replacement

1.Disconnect the power to the machine to prevent acci- dental start-ups. If the machine is plugged into an outlet, unplug it. If the machine is hardwired to a branch circuit with a junction box, remove the fuse or trip the circuit breaker to the branch.

2.Remove the lock knob and top cover (See Figure 6).

3.Remove the side guard and table.

4.Release the belt tension by turning the tension handle in a counterclockwise direction (See Figure 7). If the handle is difficult to turn, perform Track Mechanism Maintenance according to the instructions following this section.

5.Remove the belt.

6.Check the drums and platen for scoring or signs of wear which might require service or replacement.

7.Check the height of the platen with a straight edge. If it is not 1/32 in. above the drums, adjust it according to the instructions in Platen Replacement or Adjustment in the Machine Setup section of this manual.

8.Check the drums for looseness which might cause tracking problems. Correct any loose condition by tighten- ing or replacing any parts as required.

9.Slip the new belt onto the drums and platen.

10.Adjust the tension handle clockwise until the belt is flat against the platen and there is no curling or buckling of the belt in the middle.

11.Turn the drums by hand to see if the belt tracks more- or-less true. JUST BECAUSE THE OLD BELT TRACKED CORRECTLY DOES NOT MEAN THE NEW BELT WILL. Always check the tracking when replacing a belt.

12.To adjust the tracking:

12.1.Plug the machine back into the outlet or reestablish power in the branch.

12.2.Loosen the tracking lock knob.

12.3.Jog the motor on and off as necessary to observe the tracking, and turn the tracking knob as necessary to make the belt track in the center of the platen and drums. Turn the tracking knob clockwise to move the belt toward the right and counterclockwise to move the belt toward the left.

12.4.When the belt seems to be tracking correctly, turn the motor on and leave it running while fine tuning the tracking.

12.5.Lock the tracking lock knob.

12.6.When the lock knob is secure, turn the power off and disconnect the machine from the outlet or branch as in Step 1, above.

13. Replace the table, side guard, top cover and lock knob by reversing steps 3 and 2, above.

14. If you have not already done so, reconnect the power to the machine and return it to service.

Figure 6: Top cover components

Figure 7: Belt adjustment components (Note top cover removed for removal and replacement of belt.)

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Contents Disc, Belt, and Combination Disc/Belt Sanders Warranty and Service Table of Contents Machine and Manual Overview General Specifications Disc Sander Belt Sander Disc/Belt SanderGeneral Machinery Cautions General Machinery WarningsSafety Requirements for Abrasive Sanding Machines Wire SizesGeneral Electrical Cautions Adjusting the Belt Sander Arm Operating InstructionsAdjusting the Disc Sander Table Use of the Miter GaugeMaintenance Belt ReplacementInstalling Abrasive Discs Track Mechanism MaintenanceReplacing the V-Belt Rotating the machine casting to remove the disc guard bolts Machine Setup Basic SetupDisc Table Miter Parallelism Adjustment Disc Table Angle AdjustmentDisc Table Gap Adjustment Belt Table Miter Slot Parallelism Adjustment Belt Table Angle AdjustmentAdjusting or Replacing the Platen Electrical Motor Rotation Single Phase Electrical HookupThree Phase Electrical Hookup Voltage ConversionTroubleshooting Fault Probable cause Suggested remedyJIC Packages Replacement Parts Standard 1 phase and 3 phase machinesExploded View Model 4200A Belt and Disc Sander Assembly Parts Listing Model 4200A Belt and Disc Sander Assembly Ref # Description QtyExploded View Model 4300A Belt Sander Assembly Parts Listing Model 4300A Belt Sander Exploded View Model 4400A Disc Sander Assembly Parts Listing Model 4400A Disc Sander Assembly Exploded View Base Assembly All Models Electrical Connection InstallationMaintenance OperationDisassembly Exploded View Model 5511885 Dust Collection System Parts Listing Model 5511885 Dust Collection System Wiring Information Dust Collection SystemWMH Tool Group
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