Grizzly G1276, G1183 instruction manual Belt Installation, Belt Tracking, Installing sanding belt

Belt Installation

The 6'' x 48'' sanding belt is easily installed. First remove the belt guard by loosening the four com- bination-head screws. Pull down on the spring loaded belt tensioning lever which lowers the upper roller and allows the belt to be slid off of the two rollers. See Figure 14.

Figure 14. Installing sanding belt.

The new belt will have a rotation arrow on the backing. Make certain the belt is placed onto the rollers in the proper orientation. There is a rota- tion label on the housing indicating the direction. Pull the lever down and slide the new belt onto the rollers and center it.

G1183/1276 Combination Sander

Belt Tracking

Tracking adjustment is conducted as follows:

1.Insure that the upper roller is parallel to the platen (there is no adjustment for the lower roller). This adjustment is easier to accom- plish with the belt removed. Remember that the roller is crowned, and a rough align- ment of the roller to the platen was already described in the section entitled Belt Platen. To determine parallelism for proper tracking, measure at a point approximately

.5'' from the ends of the roller. Use a straight edge on top of the platen and extend it over the roller. See Figure 15.

Figure 15. Measuring platen to roller parallelism.

2.You should see a gap between the straight edge and roller. Measure this with a feeler gauge.

3.Repeat step 1 and 2 with the straight edge positioned at the opposite edge of the plat- en.

4.The difference in the measurements is the amount of "twist" in the belt. Reduce the twist by adjusting one of the two tracking knobs. See Figure 16. If the "out-board" end (or the end furthest from the tracking adjustment side) of the roller measures greater than the "in-board" side, tighten the right hand tracking knob.

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