Bunn G3 Service Manual download pdf (Page 12)

SERVICE (cont.)

1. Select the desired grind.

2. Lift the lid and pour coffee beans into the hopper.

3. Slip bag under the chute. Rest the bag on the tray.

4. Press the start switch.

5. Flip the cleaning lever a few times as dispensing slows.

6. Remove the bag. The grinder will stop automatically.

STOP

TURKISH

CLEANING LEVER

GROUND

COFFEE

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 assem-

bly.

5. Remove burr rotor cup (5) and shear plate (4)

from burr auger rotor/spring assembly (6). In-

spect shear plate (4) for wear. Replace if ex-

cessively 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 stationary burr (9) to grind chamber hous-

ing and remove burr. Inspect for wear. Replace

if excessively worn or damaged.

NOTE: Burrs are serviced in sets of two with hard-

ware.

FIG. 6 GRIND CHAMBER COMPONENTS

P1708

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 excessively worn or damaged.

10. Install shaft extension (11) and bushing (10)

onto the grinder motor shaft.

11. Install stationary burr (9) inside the grind cham-

ber and secure with two .250" -20 screws (8).

12. Install burr (7) on burr auger rotor/spring as-

sembly (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).

20 7 6 4 5

18 1 19 17

11 10 9 8 3

2 1

AC MOTOR AND GRIND CHAMBER (cont.)

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 21 22

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Bunn G3 Service Manual Page 12

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