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

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P24A & P34A Service Manual
SERVICING OPERATIONS
12/18/12
9-15
Cutter Ring Gear Replacement.
1. Remove the water tank assembly (see water tank removal).
2. Remove the cutter assembly from the cutter shaft.
3. Remove the 3/16” drive pins (1/4” on P34A) which hold the ring gear to the cutter bank (P24=6
pins, P34=8 pins).
4. The ring gear is a shrink fit onto the cutter band and therefore will have to be driven off. It
should be driven off progressively and uniformly around its circumference to avoid binding.
5. Inspect and clean the cutter bank, removing any burrs, scale, or dirt.
6. Attempt to put the new gear onto the cutter and check for fit. If it will not fit, it will have to be
expanded by heat.
7. Move the ring gear away from the cutter and heat the gear uniformly to 300-400°F (150-205°C).
This can be done by passing a hand/held oxy/acetylene torch uniformly over the entire ring gear.
DO NOT HEAT THE CUTTER.
8. Align the valley of the ring gear teeth with the existing drive pin holes and carefully set the ring
gear onto the cutter. Make sure it is fully seated all the way against the machined shoulder of the
cutter bank.
9. After the gear has cooled, drill 3/16” holes (1/4” on P34A) in the valley (between the teeth) of
the ring gear and install the drive pins. Make sure the drive pins do not protrude and interfere
with the engagement of the drive gear.
10. Install the cutter assembly onto the shaft.
11. Check and adjust cutter height and meshing of the gear teeth.
12. Install the water tank assembly.
Cutter Blade Replacement.
The cutter blades are designed to give many years of satisfactory
service and rarely need to be replaced. If they become damaged, they can be replaced by the
following procedure.
1. Disconnect and lock-out all power and remove the water tank assembly so the cutter assembly is
accessible. (See water tank removal).
2. Remove the 3/8” cap screws holding the blades to the cutter plate and remove the blades.
3. Set the new blades in place and install the cap screws and washers but do not tighten.
4. Refer to FIGURE 9-6, adjust each blade to dimension “A” and lock the blade in position by
tightening the 3/8” cap screws. Note: Use a 90° square (as illustrated) to obtain the proper blade
clearance required for satisfactory ice discharge. Dimension “A” is critical and should be
measured at both ends of the blade. Note: 3/8” x 1” cap screw must be flush with cutter blade.
5. Make sure all bolts and nuts are tightened securely then reinstall the tank assembly.