Jet Tools JWP-16OS owner manual Table Adjustment, Checking Work Table Parallel to Cutterhead

the dust port. Remove the cover/dust port (Fig. 20) as a unit.

The cutterhead assembly can be seen from the opening on top.

Refer to Figure 21:

3.Loosen the gib (C) by turning the six gib screws (D) into the gib. Remove gib (C), knife (A) and springs (E).

Note: The inner two springs may pop out when the knife and gib are removed.

4.Remove the remaining two knives in the same manner.

5.Thoroughly clean the knife slots, gibs, springs and gib screws. Check the gib screws; if the threads appear worn or stripped or if the heads are becoming rounded, replace them.

6.Inspect the cutting edge of the knives for nicks or wire edge. It is recommended that knives be replaced when they become dull or damaged. If they are to be reused, refer to Sharpening Knives in the Maintenance Section.

7.Reinsert springs, knives and gib into slot of the cutterhead. Back out gib screws just enough to hold the knife in the cutterhead.

8.Place knife gauge (Fig. 23) over knife.

Still referring to Figure 21:

9.While holding down on the knife gauge, loosen all six gib screws (D) by turning them into the gib (C) until cutting edge of knife comes into contact with the protrusion of the gauge (B). Adjust the jack screws higher or lower to touch the bottom of the knife. Snug up the gib by slightly backing out the six locking screws against the slot.

Note: At this time only, tighten the knife into the slot just enough to hold the knife in position.

10.Replace and reset the other two knives by repeating steps 3 – 9.

11.After all three knives are set with the screws just snug, back out and tighten the six screws (D) against the slot starting with the end screws first and then the center screws until the knife is securely held in the cutterhead. Tighten the remaining two knives in the same manner.

Important: After replacing and checking knives, CHECK AGAIN carefully. Make certain the direction of knives is correct and all eighteen

(3 knives x 6 screws) locking screws are tightened securely.

Table Adjustment

To perform the table adjustments described in the next two sections, you will need a straight edge, feeler gauge, and a home made gauge block made of hardwood. Make the gauge block by following the dimensions shown in Fig. 24. Precision adjustments require accuracy when milling the gauge block.

Figure 24

Checking Work Table Parallel to Cutterhead

The worktable is set parallel to the cutterhead at the factory and no further adjustment should be needed. If your machine is planing a taper, first check to see if the knives are set properly in the cutterhead. Then check to see if the worktable is set parallel to the cutterhead by proceeding as follows:

1.Disconnect machine from power source.

2.Turn the handwheel clockwise; raising the cutterhead assembly high enough to place the gauge block (A, Fig. 25) on the work table under one end of the head casting (B, Fig. 25).

3.Turn the handwheel to lower the head assembly until the head casting body barely touches the gauge block. The blades should not touch the block.

4.Slide the block toward the opposite side of the head casting. Use a feeler gauge to measure the width of the gap, if any, between the top of the block and the bottom of the cutterhead. Make a note of the gap, if any.

5.If the block wedges tightly between the table and the head casting when shifting from one side to the other, repeat steps 2 through 4, but start from the opposite end of the head casting.

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