Upper Bearing Wear Check; Removal And Replacement Of Extruding Head - Hoshizaki DT-400BAH-OS Service Manual

1. Upper Bearing Wear Check

To ensure that the bearing inside the extruding head does not exceed the wear tolerance
of .0", follow the instructions below. See Fig. 4.
1) Remove the refrigeration tray as outlined in "V.C. Removal of Refrigeration Tray."
) Remove the allen head cap screws and lift off the auger sleeve and remove the auger
cap. See Fig. 3.
3) Grasp the top of the auger and move
the auger towards you and then try to
insert a .0" round stock or pin gauge in
between the back side of the auger shaft
and the bearing surface. Check several
locations around the auger shaft. If the
gauge goes between the shaft and the
bearing at any point or if the bearing is
scratched or cracked, both the top bearing
in the extruding head and the lower
bearing in the housing should be replaced.
Instructions for removing the extruding
head and housing are located later in this
procedure.
Note: Replacing the bearing requires a bearing press adaptor. If one is not available,
replace the whole extruding head and housing.
4) Replace the auger cap and auger sleeve in their correct positions.
5) Replace the refrigeration tray in the reverse order of which it was removed.
1. When reinstalling the refrigeration tray, make sure the drain hoses align
properly over the drain tank in the rear of the machine. See Fig. .
. Make sure wiring is properly secured by the wire saddle and clear of the fan
blade.
6) Replace the lower cabinet stand panel in its correct position.
7) Plug the icemaker back in. Move the control switch to the "ICE" position to start the
automatic icemaking process.

2. Removal and Replacement of Extruding Head

1) Move the control switch to the "DRAIN" position and drain all of the water from the
evaporator.
) After the water has stopped draining, remove the refrigeration tray as outlined in
"V.C. Removal of Refrigeration Tray."
3) Remove the allen head cap screws and lift off the auger sleeve. Remove the auger
cap. See Fig. 3.
4) Remove the extruding head.
CAUTION
45
.0" Round Stock
or Pin Gauge
Auger
Extruding
Head
Fig. 4