MacDon R113 - Checking Roll Tension; Adjusting Roll Tension

214713 143 Revision A
7.13 Checking Roll Tension
Roll tension is indicated by the exposed thread on the roll tension adjuster bolt.
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A
B
Figure 7.24: Roll Tension Adjuster
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 both polyurethane and steel roll conditioners.
2. If the tension requires adjusting, refer to 7.13.1
Adjusting Roll Tension, page 143.
7.13.1 Adjusting Roll Tension
To adjust roll tension, follow these steps:
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 the disc mower to the ground.
2. Stop the engine, and remove the key from the ignition.
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A
B
C
D
Figure 7.25: Left Side Shown – Right Side
Opposite
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 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 each end of the conditioner.
PERFORMING PREDELIVERY CHECKS