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Wear Adjustment in Raising
Mechanism
As the worm gear wears with time you may notice
a little play in the handwheel. To adjust for wear in
the raising mechanism:
1. Disconnect the machine from the power
source, unplug.
2. Referring to Figure 48, remove the front panel
(D) by unscrewing the lock knob (A), pulling off
the handwheel (B) and removing five pan head
screws (C) that hold the front panel.
3. Use a wire brush and a cleaner/degreaser to
clean worm shaft, and trunnions. Apply white
lithium grease or powdered graphite to
lubricate worm shaft, and trunnions.
Referring to Figure 49:
4. Loosen lock nut (A).
5. Turn eccentric sleeve slightly (B) by placing
the wrench on the flat surface of the eccentric
sleeve located just behind the gear (C). Adjust
so that the worm raises into the worm gear
removing play in the teeth (H). After the worm
and worm gear touch back off slightly to leave
a little backlash between teeth. Tighten the
nut and try the handwheel. Make any
necessary adjustments.
6. Tighten lock nut (A).
Wear Adjustment in Tilting Mechanism
As the worm gear wears with time you may notice
a little play in the handwheel. To adjust for wear in
the tilting mechanism (while referring to Figure 50):
1. Disconnect the machine from the power
source, unplug.
2. Open the rear cabinet door and remove the
poly v-belt by lifting up on the motor.
3. Use a wire brush and a cleaner/degreaser to
clean worm shaft, and trunnions. Apply white
lithium grease or powdered graphite to
lubricate worm shaft, and trunnions.
4. Loosen lock nut (I).
There is a flat area on the eccentric sleeve that
accommodates a wrench for adjustments.
5. Turn eccentric sleeve slightly (J) so that the
worm raises into the worm gear removing play
in the teeth (K). After the worm and worm gear
touch back off slightly to leave a little backlash
between teeth. Tighten the nut and try the
handwheel. Make any necessary adjustments.
6. Tighten lock nut (I).
Figure 48
Figure 49
Figure 50