Jet Tools 22-44 Pro - Manual (Page 22)

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If the conveyor table is still difficult to raise or
lower, the table supports may need to be re-
centered on the columns. To do this, loosen the
four 3/8”x1” hex head bolts in each table support
that connects it to the table mounting brackets,
adjust and tighten the set screws (see Figure 5)
to hold the table support in position. Then
tighten the hex head bolts and re-loosen the set
screws. Re-align drum (see page 17).
Replacing V-Belt
1. Unplug machine from power source.
2. Remove the outer half of belt guard by
removing the six #10-32 screws with a 5/16”
wrench. Slide the belt guard away from the
v-belt. See Figure 37.
3. Use a flat blade screwdriver to pry off the
protective cap over the inboard miter gear,
and loosen the set screw in the gear’s
collar. Remove the miter gear and loosen
outboard collar (Figure 38). 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