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

6.3 Roll Tension

Roll tension (the force holding the rolls together) is factory set with a spring type adjustable linkage.
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.

6.3.1 Adjusting Roll Tension

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.
To adjust the conditioner roll tension , follow these steps:
1. Lower the header fully.
2. Shut down the engine and remove the key.
3. Open the driveshield. Refer to
26.
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
10 lbf (44.5 N).
6. Tighten jam nut
adjusting tension.
7. Close the driveshield. Refer to
26.
169455
OPERATING THE HEADER
5.4 Driveshields, page
(A) against casting
5.4 Driveshields, page
after
Figure 6.6: Spring Tension Dimension (LH Side)
A - Jam Nut
76
B - Spring Draw Bolt
Revision F