MacDon A40-D Pull-Type - Manual (Page 88)

SECTION 6 OPERATION
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86
Revision F
6.17.12.2.2 Roll Alignment
The rolls can be aligned in the fore and aft
direction by shimming the pivot assembly link at
the RH end of the upper roll. Rolls are aligned at
the factory, but adjustment is provided in case
the rolls become misaligned during operation.
CAUTION
To prevent accidental movement of
windrower, place all controls in NEUTRAL or
in PARK, engage park brake (if applicable),
shut off engine, and remove key.
a. Lower header until it rests on the ground.
b. Loosen bolt (A), and rotate cover (B) to expose
access port (C).
c. Examine roll timing (distance ‘X’) at each end of
the rolls.
NOTE
The rolls are aligned if the distance ‘X’
varies less than 1/16 in. (1.6 mm) from
one end to the other.
If ‘X’ varies more than 1/16 in. (1.6 mm),
align rolls as follows:
d. Remove nuts and bolts (D), and remove
shims (E). The shims can be lifted off the
pivot rod.
e. Move upper roll until dimension ‘X’ at both ends
looking through (C) is within 1/16 in (1.6 mm).
f. Reinstall shims, ensuring hardened washer (F)
is against the pivot tube.
g. Reinstall bolts (D), and nuts.
h. Operate header/mower conditioner, and
recheck alignment.
i. Close cover (B), and tighten bolt (A).
A
B
C
X
F
E
D
D