MacDon 922 - Manual (Page 31)

Form # 46620 Issue 01/06 29
OPERATION
HAY CONDITIONER ROLL INTERMESH
The intermeshing steel rolls of the hay conditioner
crimp the plant stems in several places, allowing
moisture release and faster drying. The degree to
which the stems are conditioned (crimped)
depends on the amount of roll intermesh.
Correct conditioning of alfalfa, clover and other
legumes is usually indicated when 90% of the
stems show crimping but no more than 5% of the
leaves are damaged. To achieve this, roll
intermesh is factory set so that dimension (D) is
approximately 5/8 inch (16 mm) for normal
operation, which corresponds to 2.5 on the roll gap
decal.
In heavy thick stemmed crops, rolls may need to
be adjusted for almost no roll intermesh (7 on roll
gap decal).
In lighter crops, a closer intermesh may be
required for optimum conditioning, however setting
rolls too close may cause excessive stem and leaf
damage.
To adjust roll intermesh:
NOTE: The top face of nut (E) is used as the
indicator for the gauge decal on the threaded rod.
Each division on the roll gap decal represents a
change of approximately 1/8 inch (3mm) in roll
gap. The factory setting of 5/8 inch (16mm)-roll
gap is mark 2.5 on the decal. When adjusting roll
gap, be sure that the decal reading is the same on
both sides of the conditioner roll to achieve
consistent intermesh across the rolls.
1. Loosen nut (E).
2. Turn nut (F) clockwise to decrease intermesh,
or counter-clockwise to increase intermesh.
NOTE: Nut (F) is welded to adjuster tube so
complete assembly will turn.
3. When intermesh is correct, tighten nut (E)
while holding nut (F) with another wrench to
lock the position securely.
ROLL INTERMESH ADJUSTMENT
ROLL INTERMESH
FACTORY SET AT 5/8” (16 mm)
E
F
ROLL INTERMESH ADJUSTMENT