Bunn G9 HD Operating & Service Manual - page 10
10
Removal and Replacement - GRIND CHAMBER
1.
Refer to the illustration above and remove the
two 1/4"-20, hex head screws holding the burr
housing cap(3) to the burr housing; carefully re-
move the burr housing cap. Inspect the adjust-
ing screw(2) to see if the thrust plug is worn.
Replace if excessively worn or damaged.
2.
Carefully remove rotor cup(4), shear plate(5), and
burr rotor(6) from the grinder. Inspect the shear
plate and burr(8) for wear.
Replace if excessively worn or damaged.
3.
Remove and inspect stationary burr(9) for wear.
Replace if excessively worn or damaged.
NOTE: Burrs must be replaced as a set.
SERVICE (cont.)
Motor (cont.)
11191.0001
CO
AR
SE
F
IN
E
T
H
O
R
O
UG
HLY
CLEAN GRIND C
HA
M
B
E
R
B
E
F
O
R
E
R
E
A
S
S
E
M
B
L
Y
E
M
PT
Y H
OPPER BEFORE
RE
M
O
V
IN
G
T
H
IS
C
O
V
E
R
.
NO
TI
C
E
CO
AR
SE
F
IN
E
C
OARS
B
U
1. Adjusting Screw Locknut
2. Adjusting Screw
3. Burr Housing Cap
4. Rotor Cup
5. Shear Plate
9
8
7
6
5
4
3
2
1
4.
Inspect the grind chamber and remove any for-
eign materials. The burrs will not properly seat
in the chamber if any material or coffee particles
remain.
5.
Reinstall the stationary burr, spring, burr rotor,
shear plate, rotor cup, and burr housing cap to
the burr housing.
6.
Refer to the
Adjustments
section to vary the grind
dispensed.
6. Rotor
7. Spring
8. Burr (Rotating)
9. Burr (Stationary)
P1311
10171 041597