MacDon CA25 OM - Manual (Page 161)

SECTION 8. MAINTENANCE AND SERVICING
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159
Revision B
8.12.4.3 Drive Chain Replacement: Single Reel
High Torque Drive
a. Lower header and reel, shut down combine and
remove key from ignition.
b. Remove four screws (A), and remove reel drive
cover (B).
c. Loosen nuts (C). Slide motor (D) and motor
mount (E) down towards reel shaft.
d. Remove chain (F).
e. Position new chain (F) around sprockets.
f. Slide motor (D) and motor mount (E) upward
until tension on chain (F) is such that hand
force deflects the chain 1/8 inch (3 mm) at
mid-span.
g. Tighten nuts (C), and re-check tension.
b. Re-install drive cover.
F
C
C
D
E
A
B