Votes - 3, Average rating: 4 ( )

Manafacture: Jet Tools File size: 2.99 mb File name: man_638003.pdf Language of manual:

Slide cross bar toward outboard side as shown. 4. Loosen v-belt tension by loosening pinch bolt in motor support (Figure 38) and raise motor. Remove v-belt from pulleys. 5. Install new v-belt and tension the belt by using the weight of the motor only. Make sure the pulleys are aligned. Replace transfer rod and miter gear; tighten set screw on miter gear and replace protective cap. Tighten collar on transfer rod. 6. Install the outer half of the belt guard and tighten the six screws. Rotating Drum Bearings Bearings should be replaced when they allow excessive play of the drum, make excessive noise or otherwise indicate failure. If clicking noises in the bearings are a problem, rotating may be a solution instead of replacement, as follows: 1. Unplug sander from power source. 2. Loosen the set screws in the bearing collar (Figure 39). Leave the set screw wrench in one of the set screws. Then rotate the drum within the bearing and tighten the set screws. 3. If the clicking persists, or if the drum shaft is tight in the bearing and cannot rotate, then loosen the bearing bolts. Repeat step 2. After the drum is rotated within the bearing, tighten the bearing bolts first and then the set screws. Figure 37 Figure 38 Figure 39 22 4. After the machine has run for about 30 minutes, stop to check that the set screws and bearing bolts are still tight. NOTE: It may be necessary to re-align the tension rollers after rotating the drum bearings. See page 18. Replacing Drum Bearings If the bearings are squealing or are loose, they may need replacing. 1. Unplug sander from power source and remove dust cover. 2. Raise conveyor table until the sanding drum rests on the conveyor. 3. Outboard: Remove the two knobs and washers that are holding the bearing in place. Loosen the two set screws in the bearing collar and slide the bearing off the end of the drum (Figure 41). 4. Install a new bearing on the shaft of the drum and tighten the bolts. Tighten the set screws in the bearing collar. Make sure the bolts go through the drum shield and tension roller support brackets (see exploded view, page 36). 5. Inboard: Remove outer half of belt guard by removing the six #10-32 screws in the guard. Slide the belt guard away from the v- belt. 6. Release v-belt tension by loosening pinch bolt in motor support and raising motor. 7. Loosen the set screw in the driven pulley and remove the pulley from the shaft. 8. Remove the bolts holding the inboard (right) bearing in place. See Figure 40. Slide the inner half of the upper belt guard off the end of the shaft along with the bearing. 9. Install the new bearing on the shaft and install the inner half of the upper belt guard in the same manner as it was removed. Make sure the bolts go through the tension roller brackets and drum shield. Install the new inboard bearing. 10. Center the drum between the carriage legs before tightening bolts. Tighten the bolts in the bearing and the set screws in the bearing collar. 11. Install the driven pulley (shown in Figure 40) making sure it aligns with the drive pulley on the motor. Tighten the set screw. 12. Install the outer half of the belt guard cover and tighten the six #10-32 screws. Figure 40 Figure 41 13. Align the drum and tension v-belt according to instructions in this manual. 14. Check all bolts and set screws for tightness, and check them again after sanding for 30 minutes. 23 Operation Before using your drum sander, review the previous pages in this manual on initial set-up and adjustment. In this section, you will learn how to operate the machine. Make sure an abrasive strip is mounted and a dust collection system is connected. Basic Operating Procedure 1. Set depth of cut. 2. Start dust collection system. 3. Start drum. 4. Start conveyor and select feed rate. 5. Feed stock through machine. To feed stock through the 22-44 Pro, rest and hold the board to be sanded on the conveyor belt, allowing the conveyor belt to carry the board into the drum. Once the stock is halfway through, reposition yourself to the outfeed side of the machine to receive and control the board as it exits. Setting Depth of Cut Adjusting the drum sander for the proper contact between the abrasive and the stock determines the mechanical depth of cut. It may take some experimentation to determine the proper depth of cut, given the variables of abrasive grit, type of wood, and feed rate. For best results, use scrap wood to practice sanding and to develop skill and familiarity with the machine before doing finish work. A combination of several variables will determine the proper depth of cut to use, including the following: 1. Abrasive type and grit size. 2. Width of the piece being processed. 3. Hardness of the piece. 4. Feed rate of the conveyor belt. Establishing Proper Drum Height The depth of cut is controlled by the table height adjustment handle which raises or lowers the conveyor table under the drum. A good rule of thumb when sanding with grits finer than 80 is to place th...

Download now

Please, enter two numbers from picture: