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

6.3 Roll Tension

The roll tension (the force holding the rolls together) is achieved with a spring type adjustable linkage that is preset
to maximum at the factory.
Heavy crops or tough forage that tend to separate the rolls require the maximum roll tension to ensure that material
is sufficiently crimped.
Light alfalfa and short grasses would require less roll 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 See Section
page 28.
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. See Section
page 28.
169455
OPERATING THE HEADER
5.4 Driveshields,
(A) against casting
5.4 Driveshields,
after
Figure 6.6: Spring Tension Dimension (LH Side)
A - Jam Nut
72
B - Spring Draw Bolt
Rev. E