24
SERVICE (cont.)
AUGER SHAFT ASSEMBLY
Auger Shaft Assy
Auger Shaft Bushing
Cooling Drum Seal
Auger Shaft Seal
Hopper Drum Seal
FIG. 5 AUGER SHAFT ASSEMBLY
Location:
The Auger Shaft Assembly is located in each of
the cooling drums.
Removal and Replacement:
1. Drain, remove and clean hopper; refer to the
Rec-
ommended Daily Weekly Cleaning Section of this
manual, page 12, for proper cleaning procedures.
Discard the auger shaft seal, hopper/drum seal
and faucet spool o-rings.
2. Remove the #8 locking screws securing auger
motor cover to the cooling drum mount assem-
bly; remove cover and set aside for reassembly.
3. Remove the #8 locking screw on the lower right
side (viewed from front) of the auger motor
mounting bracket securing the auger motor run
capacitor. Set capacitor aside with wires attached.
4. Disconnect the auger motor terminal from the ter-
minal on the main wiring harness.
5. Remove the remaining #8 locking screws secur-
ing the auger motor mounting bracket to cooling
drum mounting bracket.
6. Remove motor with mounting bracket, drip tray
(if present) split pin and torsion spring bearing as
an assembly.
NOTE -
When removing or installing motor and shaft
assemblies, be sure the split pins are turned to a po-
sition that will clear the torque sensor circuit board.
7. Pull the auger shaft assembly straight out of cool-
ing drum. Inspect the shaft for abnormal wear or
scoring.
8. From the front of dispenser, remove the seal and
blue bushing from cooling drum and discard them.
9. Clean seal and busing surfaces of the cooling drum
very thoroughly. All old lubricant must be re-
moved.
10. Refer to Fig 6A and slip new blue bushing into
cooling drum. Lightly lube I.D. of bushing with
#M2550.0000 “Lubri-film” provided in Kit
#28106.0000 (CDS-2) or #28106.0001 (CDS-3).
Do not use anything such as a cotton swab that
might leave lint or unravel. DON NOT GET ANY
LUBE ON THE SEAL COUNTERBORE SURFACE.
11. Lightly lube I.D. of new cooling drum seal with
#M2550.0000, provided in kit. Use care not to get
any lube on O.D. of seal. Place seal on insertion
tool #28395.0000, as shown in Fig. 6B. Make sure
open face of seal is toward cooling drum.
12. Push seal into bore until it is firmly seated; re-
move tool.
13. Clean the auger shaft assembly, then wipe a small
amount of #M2550.0000 “Lubri-film” (provided
in kit) over the first two inches of the front end of
the shaft.
14. Place a small amount of #29563.0000 “Krytox”
lubricant (provided in kit in a plastic cap) on the
end of the motor shaft (about 1 1/2") and a thin
film in the groove. Install auger shaft assembly
onto the motor shaft. See Fig. 6C. Do not use too
much “Krytox” lubricant.
NOTE -
This is the only place “Krytox” lubricant is
used.
15. Assemble motor/shaft assembly as shown in Fig.
6C, then install assembly into cooling drum. Make
sure the pins do not hit the sensor board and cool-
ing drum seal is not dislodged as the shaft passes
through.
16. Secure motor and capacitor to the cooling drum
mounting bracket. Install rear motor cover.
17. Refer to
Initial Setup for hopper assembly and in-
stallation procedures. Be sure to use new hopper/
drum seal, auger shaft seal and faucet spool o-
rings when reassembling.
P1758
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