Assessments - 2, GPA: 4
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Facilidade de uso
-32 G0458 18" Open End Belt/Drum Sander Feed Belt Replacement Tools Needed: Qty Wrench 12mm ................................................... 2 Hex Wrench 6mm.............................................. 1 An Assistant ...................................................... 1 Replacing the feed belt is a simple process, but will require tensioning and tracking when completed. To replace the feed belt: 1. Disconnect power to the sander! 2. Use a permanent marker, paper correction fluid, or fingernail polish to mark the front of the feed belt tensioning bolt (Figure 39) on both sides. This step will aid you in returning the bolts to their original position, reducing the amount of tracking necessary. 3. Loosen the lock nuts shown in Figure 39 and turn both of the feed belt adjustment bolts counterclockwise one full turn at a time to release the tension from the feed belt. 4. Remove the outside table cap screws shown in Figure 40 and loosen the corresponding cap screws on the inside edge. 5. Have an assistant lift the outside edge of the table, then slide the feed belt off. 6. Clean any dirt or dust off of the table and rollers, have an assistant lift the table, then slide the new feed belt on. 7. Re-install and tighten all of the table cap screws. 8. Tighten the feed belt adjustment bolts equally, then follow the tensioning instructions on Page 32. Note: The feed belt will stretch slightly when new and will need to be re-tensioned after a short amount of use. 9. Track the new feed belt according to the instructions on Page 31. Note: One side of the belt may need to be tighter than the other for the belt to track straight. Table Cap Screws Figure 40. Feed belt table outside cap screws. -33 G0458 18" Open End Belt/Drum Sander Gauge Blocks Tools Needed: Qty 6' Long 2x4........................................................1 Miter Saw (or Circular Saw) .............................. 1 Jointer................................................................ 1 Table Saw ......................................................... 1 The gauge blocks described here will be required to complete the remaining service procedures in this section. To make the gauge blocks: 1. Edge joint the concave edge of the 2x4 flat on a jointer, as shown in Figure 41. Figure 41. Edge jointing on a jointer. 2.Place the jointed edge of the 2x4 against the table saw fence and rip cut just enough off the opposite side to square up the two edges of the 2x4, as shown in Figure 42. ............ Previously Jointed Edge Held Against Fence Opposite Edge Rip Cut with Table Saw Figure 42. Rip cutting on a table saw. 3. Cut the 2x4 into two even pieces to make two 36" long wood gauge blocks. Note: Steps 1 & 2 can be skipped, but having the gauge blocks at an equal height is critical to the accuracy of your adjustments. -34 Table Adjustments Aligning the drums parallel to the conveyor belt (Figure 43) is critical for sanding accuracy. Care should be taken to make the tolerances as close as possible (within 0.002" from one side to the other) when adjusting the drum height. .................................................. Figure 43. Drum parallel to conveyor belt. Tools Needed: Qty Hex Wrenches 3 & 6mm ..............................1 Ea Gauge Blocks .................................................... 2 Feeler Gauge Set..............................................1 To align the drums: 1. Disconnect power to the sander! 2. Remove the sandpaper from the drum and place the gauge blocks as shown in Figure 44. Figure 44. Gauge blocks placed under drums. G0458 18" Open End Belt/Drum Sander 3. Raise the table until the gauge blocks just touch the drum. Note: A good way to know when they are touching is to rock the drum back and forth while raising the table until you hear or feel contact with the gauge blocks. 4. Lower the table one full crank of the handwheel (taking handwheel free-play into consideration; or in other words, wait until the chain starts moving before starting to count the handwheel rotation). 5. Starting at one end, find the largest size feeler gauge that can pass between the drum and your gauge block. (The feeler gauge should slide with moderate resistance, without forcing the drum to roll.) 6. Repeat Step 5 at the other end of the drum. —If the difference between the two sizes is 0.002" or less, then no adjustment is necessary. —If the difference between the two sizes is more than 0.002", then one end must be adjusted to within 0.002" from the other. Continue to the next step. 7. Loosen the table cap screws and adjust the height of the table by rotating the adjustment knob shown in Figure 45. Table Cap Screws Table Height Adjustment Knob Figure 45. Table height adjustment knob. 8. Tighten the table cap screws and repeat Steps 5 & 6. G0458 18" Open End Belt/Drum Sander Pressure Plate Adjustments Tools Needed: Qty Wrench 8mm ..................................................... 1 Hex Wrench 4mm.................................................