MacDon CA25 OM - Manual (Page 160)

SECTION 8. MAINTENANCE AND SERVICING
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158
Revision B
8.12.4.2 Tension Adjustment: Single Reel
Standard 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. Tension on chain (C) should be such that hand
force deflects the chain 1/8 inch (3 mm) at
mid-span.
d. Adjust tension as follows:
1. Loosen four nuts (D) on motor mount.
2. Slide motor (E) and motor mount (F) up or
down until required chain tension is
achieved.
3. Tighten nuts (D) to 75 ft·lbf (102 N·m).
e. Re-install drive cover.
A
B
D
D
F
E
F
C