Jet Tools J-7020 Machine Setup, Replacement of Guide Bearings, Replacement of Blade Edge Bearings

Replacement of Guide

Bearings

Referring to Firgure 18, remove the cap screw from the bearing being replaced. Separate the bushing and cap screw from the bearing. Discard the bearing.

NOTE: There is a light press fit between the bearing and the bushing.

2.Install bushing in replacement bearing. Install cap screw through bushing and into guide support.

3.If the bearing being replaced is on an eccentric bush- ing, install the bearing on the operator side of the blade.

4.Turn the eccentric bushing in the guide support until the bearing contacts the blade.

Replacement of Blade Edge Bearings

1.Remove the capscrew from the blade edge bearing being replaced and discard the bearing. Be care- ful not to lose the spring washer that separates the bearing from the floating block (see figure 19).

2.Insert the capscrew into the new bearing. Replace the spring washer onto the capscrew and re-install into the floating block.

3.If re-adjustment is necessary, loosen the pivot capscrew and move the floating block so that the blade edge is close to the guide support, but cannot touch the bottom surface of it when the sawblade is cutting a workpiece.

	Adjustment	Guide Support
	Cap Screw
	Floating Block
16	Cap Screw
	Blade Edge
	Bearing

Figure 19: Blade edge bearing replacement

Replacement of the Wire Brush

1.Loosen four knobs securing the blade cover. Lift the cover and swing it backward.

2.Remove the attaching screw, spring washer and washer. Remove and discard the brush (see figure 20).

3.Install replacement brush and secure with screw, spring washer and washer.

Wire Brush

Screw and Washers

Figure 20: Wire brush

Machine Setup

The saw delivered to you has been adjusted at the factory. A number of test pieces have been cut using the saw to verify the accuracy of cutting. Therefore, the only setup operations required before releasing the saw for service are spotting the saw and establish- ing the electrical connections to the motor.

Uncrating and Spotting

Spot the saw where it makes the most sense for the operations you will probably be doing. If you are go- ing to be doing cut-off work on very long pieces of stock, allow plenty of room for the stock, and the infeed and outfeed supports. Remove the saw from the ship- ping skid and discard any hold-down devices that were used to secure the saw to the skid.