Roll Tension; Adjusting Roll Tension - MacDon R113 Operator's Manual

3.15 Roll Tension

Roll tension (the pressure holding the rolls together) is factory-set to maximum and is adjustable.
Heavy crops or tough forage can cause the rolls to separate; therefore, maximum roll tension is required to ensure
that materials are sufficiently crimped.
To prevent over-conditioning of light alfalfa and short grasses, apply less roll tension.

3.15.1 Adjusting Roll Tension

Roll tension is factory-set to maximum position, and can be adjusted as follows:
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 self-propelled disc header fully.
2. Stop engine, and remove key.
3. Loosen jam nut (A) on both sides of conditioner.
4. Turn the spring drawbolt (B) clockwise to tighten
spring (C) and INCREASE roll tension.
5. Turn the spring drawbolt (B) counterclockwise to loosen
spring (C) and DECREASE roll tension.
6. Measure the amount of exposed thread on the spring
drawbolt (B) at each end of the conditioner.
Measurement (D) should be 12–15 mm (1/2–9/16 in.)
for both polyurethane and steel roll conditioners.
IMPORTANT:
Turn each bolt equally. Each turn of the bolt changes
the roll tension by approximately 32 N (7.2 lbf).
7. Tighten jam nuts (A) on both sides.
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OPERATION
Figure 3.135: Left Side Shown – Right Side
Opposite
87
B
D
A
C
Revision A