MacDon R85 Rotary Disc 16 Foot Pull-Type - Manual (Page 100)

OPERATING THE MOWER CONDITIONER
7.3 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.
7.3.1 Adjusting the Roll Tension
Follow these steps to adjust the 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.
1. Lower mower conditioner to ground, shut down mower
conditioner, and remove key.
2. Open driveshield. See Section 5.4 Driveshields, page
32 .
Figure 7.7
3. To INCREASE the roll tension, loosen jam nut (A) and
turn the spring drawbolt (B) clockwise to tighten the
spring (C).
4. Repeat above step for opposite end of roll.
5. To DECREASE the roll tension, turn the spring
drawbolt (B) counterclockwise to loosen the springs.
IMPORTANT
Turn each bolt equally. Each turn of the bolt
changes the roll tension by approximately 10 lbf.
(44.5 N).
6. Tighten jam nut (A) after adjusting tension.
7. Close driveshield.
Figure 7.8
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Rev. D