MacDon CA20 Operators Manual - Manual (Page 88)

MAINTENANCE/SERVICE
Form 169009 86 Model Year - 2009
8.10.2 AUGER DRIVE CHAIN ADJUSTMENT
The auger is driven from the adapter drive
system by a sprocket that is attached to the
side of the auger. To adjust the chain tension,
refer to illustration below and proceed as
follows:
CAUTION
Stop engine and remove key from ignition
before leaving operator's seat for any
reason. A child or even a pet could engage
an idling machine.
a. Detach combine from adapter. Refer to Section
5, Adapter Attachment/Detachment On
Combine.
a. Loosen nut (A) and remove clip (B) and cover
(C).
b. Loosen bolt (D) on idler sprocket.
c. Rotate auger in reverse to take up slack in
lower strand of chain (E).
d. Push idler sprocket down to eliminate remaining
slack in upper strands.
e. Rotate auger back and forth to check slack and
repeat above step if necessary. A slight
amount of slack is acceptable.
NOTE
Do not use excessive force on idler to
tighten chain.
f. Tighten idler bolt (D) and torque to 150 ft-lbf
(203 N·m).
g. Reinstall cover (C) with clip (B) and tighten nut
(A).
C
B
A
D
E
C
B
A