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

7.8 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 both polyurethane and steel roll conditioners.
2. If the tension requires adjusting, refer to
Roll Tension, page 62.

7.8.1 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 rotary 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.
214075
PERFORMING PREDELIVERY CHECKS
7.8.1 Adjusting
62
Figure 7.19: Roll Tension Adjuster
Figure 7.20: Left Side Shown – Right Side
Opposite
Revision A