MacDon R80 Rotary Disc Pull-Type Windrower - Manual (Page 102)

MAINTENANCE/SERVICE
Form # 169053
100
Model Year - 2009
7.9.10 Hourglass Deflector Drive Belts – 16
Ft
DANGER
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.
7.9.10.1 Belt Tension
a. Raise header fully, shut off engine and remove
key.
b. Engage lift cylinder lock-out valves.
c. Open LH and RH drive shields.
d. Apply force of 51 lbf (22 N) to each deflector
drive belt at mid-span. Deflection of each belt
should be 0.12 in. (3 mm).
IMPORTANT
To prolong belt and drive life, do not over-
tighten belts.
e. If necessary, adjust as follows:
1. Loosen nuts (A).
2. Loosen jam-nut (B) on adjuster bolt (C).
3. Turn adjuster bolt to adjust tension.
4. Tighten nuts (A) and jam-nut (B).
5. Re-adjust tension of a new belt after a short
run-in period, (about 5 hours).
7.9.10.2 Belt Replacement
a. Raise header fully, shut off engine and remove
key.
b. Engage lift cylinder lock-out valves.
c. Open cutterbar door(s).
d. Open LH and RH drive shields.
CAUTION
Exercise caution when working around the
blades. Blades are sharp and can cause
serious injury. Wear gloves when handling
blades.
(continued next page)
RH SIDE
LH SIDE
B
C
A
B
C
A