Removal And Replacement Of Mechanical Seal And Lower Housing - Hoshizaki F-330BAH Service Manual

19) Move the flush/control switch to the "ICE" position. Plug the appliance into the electrical
outlet, then move the power switch to the "ON" position.
20) Replace the panels in their correct positions.

6. Removal and Replacement of Mechanical Seal and Lower Housing

6a. Mechanical Seal
1) Remove the front panel. Move the flush/control switch to the "FLUSH" or "DRAIN"
position.
2) After 2 min., move the power switch to the "OFF" position, then unplug the appliance
from the electrical outlet.
3) Remove the top panel and top insulation panel.
4) Remove the thumbscrews attaching spout (B) to the bin, then remove spout (B).
See Fig. 3.
5) Remove the thumbscrews attaching spout (A) and safety bracket (A) (if applicable) to
the evaporator assembly, then remove spout (A) and safety bracket (A) (if applicable).
6) Remove the seal bolts securing the extruding head. Using the cutter, lift out the auger
assembly.
7) The mechanical seal consists of two parts. One moves along with the auger, and the
other is fixed on the lower housing. If the contact surfaces of these two parts are worn,
cracked or scratched, the mechanical seal may cause water leaks and should be
replaced.
8) Remove the socket head cap screws securing the evaporator to the lower housing.
9) Raise the evaporator up to access the lower housing.
10) Remove the mechanical seal from the housing. If only replacing the mechanical seal,
proceed to step 12.
To help prevent water leaks, be careful not to damage the surfaces of the
O-ring or mechanical seal.
6b. Lower Housing
11) Remove the O-ring and the bolts securing the housing to the gear motor and remove
the housing from the gear motor. If inspection of the upper bearing inside the extruding
head (see "IV.B.1. Upper Bearing Wear Check") indicates that it is out of tolerance,
replace both it and the bearing inside the lower housing.
Note: Replacing the bearing requires a bearing press adaptor. If one is not available,
replace the whole extruding head and housing.
12) Install the O-ring and mount the lower housing on the gear motor.
13) Install the lower part of mechanical seal on the lower housing.
14) Lower the evaporator down and secure it to the lower housing.
15) Install the auger assembly with the upper part of the mechanical seal attached.
WARNING
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