Grizzly G9983 instruction manual Service Adjustments, Oscillation Timing

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SECTION 8: SERVICE ADJUSTMENTS

Keep loose clothing out of the way of machinery and keep hair pulled back.

Disconnect power to the machine when perform- ing any maintenance or assembly. Failure to do this may result in serious personal injury.

Wear safety glasses dur- ing the entire assembly process. Failure to com- ply may result in serious personal injury.

Oscillation Timing

The first step in adjusting the oscillation is timing the side to side movement the belt makes when oscillating. The belt should take the same amount of time to travel to one side as it did the other.

Keep your hands clear of the sanding belt when making the adjustments in this step. The sandpaper is designed to remove a lot of material quickly whether it is wood or skin!

To time the oscillation movement:

1.Open both access doors to the upper part of the machine so you can view the belt move- ment. The sanding belt should also be on the rollers and tightened. Turn the sanding belt ON.

2.Count the amount of time it takes the belt to move from one side to the other. If the oscil- lation balance is correct, the belt will move from one side to the other in even intervals. If the balance is not correct, the belt may move to one side very quickly, then very slowly to the other.

3.If the belt immediately moves too far and shuts off the machine, then loosen the oscil- lation timing control knob shown in Figure 20 and move it toward the front or rear of the machine to rotate the eccentric.

4.Loosen the belt tension, rebalance the sand- ing belt and retighten the belt tension. Repeat steps 2 and 3.

G9983 15" Open-End Wide-Belt Sander

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Contents OPEN-END WIDE-BELT Sander Page Table Of Contents Safety Instructions For Power Tools Safety25ft 50ft 100ft Length AMP RatingAdditional Safety Instructions For The Wide-Belt Sander Introduction Circuit Requirements 220V Single-PhaseWiring GroundingExtension Cords External Features Control Panel Machine FeaturesThese items are behind Left-hand access door Access DoorsSET UP UnpackingPiece Inventory Measure Hardware Recognition ChartSite Considerations Clean UpBeginning Assembly To install the handwheel handleHandwheel Handle Platen To insert the platenTo set the platen even with the belt rollers To connect the air hose To install a sanding beltAir Hose Sanding BeltSanding Belt Tension Pressure Rollers To Tighten Belt TensionTo Loosen Belt Tension Before you test run your machine Dust Collection Test RunRecommended adjustment checklist Recommended AdjustmentsGrit Type OperationsBefore Starting Choosing SandpaperTo change feed belt speeds Unplug the sander Conveyor Height Feed Belt SpeedThis is the load meter Load Meter OperationThree basic platen positions Platen Depth Cleaning PadsEmptying Filters MaintenanceCleaning Sanding Belts GeneralDate Approximate Hours Of Use Maintenance Performed Oscillation Timing Service AdjustmentsUse the knob on this valve to control Oscillation speed Oscillation SpeedOscillation Return Limit SwitchesTo adjust the oscillation return To adjust the limit switchesPressure Roller Depth To adjust the pressure roller depth Unplug the sanderPressure Roller Tension To adjust the pressure roller tension Unplug the sanderTo check the feed belt tracking To adjust the feed belt tracking Unplug the sanderFeed Belt Tension Feed Belt TrackingReplacing V-Belts Belt TensionG9983 15 Open-End Wide-Belt Sander To replace the graphite sheet Platen Graphite Air SystemReplacing Brakes Date Approximate Hours Of Use Service Performed Closure Machine Data Sheet Air Inlet Motor 5 6 8 9 10 11 14 Model G9983 Wiring Diagram 220 Volt Single Phase Platen Tool G9983 Parts Breakdown109108 124 111 110 112 Machine Base Roller Bracket LH G9983 Contact Roller Base 414 Machine Frame 621 622 620 601 619 623 Control BOX Symptom Possible Cause Corrective Action TroubleshootingTion Warranty and Returns Warranty Card Grizzly INDUSTRIAL, INC Page Call Today For a Free Full Color Catalog