Checking Roll Tension; Adjusting Roll Tension - MacDon R113 Unloading And Assembly Instructions

10.10 Checking Roll Tension

Roll tension is indicated by the exposed thread on the roll tension adjuster bolt.
1. Measure the amount of exposed thread on the roll tension
adjuster bolt (A) at each end of the conditioner.
Measurement (B) should be 12–15 mm (1/2–9/16 in.) for
polyurethane and steel roll conditioners.
2. If the tension requires adjusting, refer to
Roll Tension, page 128.

10.10.1 Adjusting Roll Tension

The amount of pressure that is applied to the crop as it passes through the roll conditioner is adjusted by changing the roll
tension setting. Generally, maximum roll tension is desirable.
To adjust the roll tension back to factory setting, follow these steps:
1. Lower the header fully.
2. Loosen jam nut (A) on both sides of the conditioner.
3. Turn spring drawbolt (B) clockwise to tighten spring (C) and
increase the roll tension.
4. Turn spring drawbolt (B) counterclockwise to loosen
spring (C) and decrease the roll tension.
5. Measure the amount of exposed thread on 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).
6. Tighten jam nuts (A) on each end of the conditioner.
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PERFORMING PREDELIVERY CHECKS
10.10.1 Adjusting
Figure 10.29: Roll Tension Adjuster
Figure 10.30: Adjusting Roll Tension
128
A
B
B
D
A
C
Revision A