Roll Timing - MacDon R113 Operator's Manual

2. Loosen jam nut (A) on both sides of conditioner.
3. Turn the spring drawbolt (B) clockwise to tighten
spring (C) and increase roll tension.
4. Turn the spring drawbolt (B) counterclockwise to
loosen spring (C) and decrease roll tension.
5. Measure the amount of exposed thread on the spring
drawbolt (B) at each end of the conditioner.
measurement (D) should be 1/2–9/16 in. (12–15 mm)
for both poly and steel roll conditioners.
IMPORTANT:
Turn each bolt equal amounts. Each turn of the
bolt changes the roll tension by approximately
7.2 lbf (32 N).
6. Tighten jam nuts (A) on both sides.

Roll Timing

IMPORTANT:
Roll timing on is critical when the roll gap is decreased because conditioning is affected, and the bars may
contact each other.
For proper conditioning, the rolls must be properly timed
with the bar on one roll centered between two bars on the
other roll. The factory setting should be suitable for most
crop conditions.
Checking Roll Timing
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.
169820
OPERATION
The
Figure 3.91: Left Side Shown – Right
Side Opposite
Figure 3.92: Properly Timed Rolls
84
Revision A