VOGT ICE TUBE-ICE P-24A, Service Manual

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P24A & P34A Service Manual
SERVICING OPERATIONS
12/18/12
9-7
Drive Gear Replacement.
1. Disconnect and lock-out all power to the machine.
2. Remove the top and side bolts holding the mounting plate to the support bracket. Lift the plate
and gear reducer from the bracket and rest the assembly on a stable work table sitting next to the
tank. Leave the electrical conduit connected to the gear reducer motor.
3. Inspect the drive gear teeth for proper vertical alignment and wear pattern.
4. If the wear pattern indicates less than a full width of tooth engagement, measure the difference
and make a note to correct at the time of reassembly.
5. Measure and record the dimension from the drive gear to the bottom side of the mounting plate.
6. Remove the three or four cap screws holding the drive gear to the split taper bushing.
7. Using two of the same cap screws in the threaded holes of the bushing, jack the gear off the
bushing and remove both from the gear reducer shaft.
8. Clean the split bushing and tapered hole of the new drive gear and insert the bushing into the
drive gear making sure the tapers match.
9. Slide the split hub and gear onto the keyed shaft with the key in place, positioning the hub (by
measurement previously recorded) so the full width of the gear teeth will engage when assembled
and tightened.
10. Tighten the cap screws (three or four) progressively and uniformly around the hub and recheck
the location measurement. If it is not correct, loosen the cap screws, hub and gear assembly and
make correction. Then retighten the cap screws.
11. Install the reducer and mounting plate assembly on the water tank bracket and fasten in place
with the side and top cap screws.
12. Rotate the cutter and disc assembly by hand and stop at the point where you feel the least amount
of backlash between the gear teeth.
NOTE: There should be only a slight amount of backlash (more specifically “tooth tip
clearance”). Too much clearance will cause premature wear and possible tooth damage. When
the cutter runs under a no load condition, it should have a smooth uniform sound. For
lubrication, see Section 7, Maintenance.
13. If the tooth tip clearance needs adjusting, loosen the four hex nuts holding the reducer to the
mounting plate and move the reducer as required for proper tooth engagement. Tighten the hex
nuts securely and recheck backlash.