Roll Timing - MacDon R85 Operator's Manual

6.10.4 Roll Timing

For proper conditioning, the rolls must be
properly timed with each steel bar on one roll
centered between two bars of the other roll as
shown. The factory setting should be suitable
for most crop conditions.
IMPORTANT
Roll timing is critical when the roll gap is
decreased because:
•
Conditioning is affected, and
•
The bars may contact each other.
CROP
To check roll timing "X", proceed as follows:
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.
a. Lower header fully, stop engine and remove key.
b. Open drive shield. See 7.5 DRIVE SHIELD.
c. Examine roll timing (distance 'X') at each end of
the rolls with the header fully lowered. Each
steel bar on one roll should be centered
between two bars of the other roll so that
distance "X" is approximately equal on both
sides of the bar.
Form # 169455
OPERATION
X
30
6.10.4.1 Roll Timing Adjustment
Adjust roll timing, if necessary, as follows:
a. Loosen four bolts (A) in slots of yoke plate on
upper roll universal shaft.
b. Manually rotate upper roll until timing is as
stated above.
c. Tighten bolts (A) to secure the position.
A
Revision A