Roll Tension; Adjusting Roll Tension - MacDon R85 Operator's Manual

4.3 Roll Tension

Roll tension (the force holding the rolls together) is factory set with a spring type adjustable linkage.
The roll tension factory setting is the spring fully tensioned.
Heavy crops or tough forage tend to separate the rolls and require more tension to ensure material is sufficiently
crimped. Light alfalfa and short grasses require less tension to minimize over-conditioning.

4.3.1 Adjusting Roll Tension

DANGER
To avoid bodily injury or death from unexpected startup of the machine, always stop the engine and remove
the key from the ignition before leaving the operator's seat for any reason.
1. Lower the header fully.
2. Stop the engine and remove the key.
3. Open the driveshield. Refer to
4. To decrease the roll tension, turn the spring drawbolts counterclockwise to loosen the springs.
5. To increase the roll tension, loosen jam nut (A) and turn
the spring drawbolt (B) clockwise to tighten the spring
at each end of the roll. Spring is fully tensioned at the
factory.
IMPORTANT:
Turn each bolt equal amounts. Each turn of the
bolt changes the roll tension by approximately
44.5 N (10 lbf).
6. Tighten jam nut
adjusting tension.
7. Close the driveshield. Refer to
28.
147757
OPERATING THE HEADER
3.4 Driveshields, page
(A) against casting
3.4 Driveshields, page
28.
after
Figure 4.6: Spring Tension (LH Side)
78
Revision B