MacDon A40-D - Manual (Page 88)

SECTION 6 OPERATION
169000 / 169040
86
Revision E
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. Re-install shims, ensuring hardened washer (F)
is against the pivot tube.
g. Re-install bolts (D) and nuts.
h. Operate header / mower conditioner, and
re-check alignment.
i. Close cover (B), and tighten bolt (A).
A
B
C
X
F
E
D
D