Bunn G9-2T DBC - Manual (Page 18)

18
SERVICE (Cont.)
FIG. 5 GRIND CHAMBER COMPONENTS
P1708
20 7 6 4 5
16
18 1 19 17
11 10 9 8 3
2 1
13
7
12
14
15
AC MOTOR AND GRIND CHAMBER (cont.)
Removal and Replacement - Grind Chamber - Fig. 5:
1. Loosen the two set screws (16) securing the grind
selector knob to the grind selector dial plate (18) and
remove knob.
2. Remove the adjusting screw w/bearing (19). Inspect
adjusting screw w/bearing for wear. Replace if exces-
sively worn or damaged.
3. Remove the two .250”-20 screws (1) securing the grind
selector dial plate (18) to the grind housing.
4. Slide burr auger rotor/spring assembly (3) off of the
grinder motor shaft with burr rotor cup (5), shear plate
(4) and burr (7) as an assembly.
5. Remove burr rotor cup (5) and shear plate (4) from burr
auger rotor/spring assembly (6). Inspect shear plate (4)
for wear. Replace if excessively worn or damaged.
6. Remove the two .250” screws (20) securing burr (7) to
burr auger rotor/spring assembly (6) and remove burr
(7). Inspect burr (7) for wear. Replace if excessively
worn or damaged.
7. Remove the two .250”-20 screws (8) securing the sta-
tionary burr (9) to grind chamber housing and remove
burr. Inspect for wear. Replace if excessively worn or
damaged.
NOTE: Burrs are serviced in sets of two with hardware.
8. Clean all grinding burrs and mounting surfaces before
reassembly.
9. Remove bushing (10) and shaft extension (11) from
grinder motor shaft. Inspect for wear. Replace if exces-
sively worn or damaged.
10. Install shaft extension (11) and bushing (10) onto the
grinder motor shaft.
11. Install stationary burr (9) inside the grind chamber and
secure with two .250” -20 screws (8).
12. Install burr (7) on burr auger rotor/spring assembly (6)
securing with two .250”-20 screws (20).
13. Slide burr auger rotor/spring assembly and burr (3)
onto the motor shaft.
14. Align the slot in the shaft extension and the slot in the
burr auger rotor/spring assembly and install shear plate
(4).
15. Install burr rotor cup (5) onto the burr auger rotor/spring
assembly (6).
16. Install the adjusting screw w/bearing (19) into the grind
selector dial plate (18).
17. Install grind selector dial plate (18) with adjusting screw
w/bearing (19) onto the grind chamber and secure with
two .250”-20 screws (1).
18. Install grind selector knob (17) onto the grind selector
dial plate (18).
NOTE: Refer to ADJUSTMENTS in the Installation and Op-
erating Manual, and reset the burrs.
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