MacDon C Series, Operator'S Manual

Page: 35 / 70

Setup procedure and adjustment of the corn head
34
8.5 Snapping plate settings
The basic factory setting is 27-32 mm. For proper operation, the snapping plate
spacing should be 5 mm closer together at the front end than at the rear end. The
central snapping plate adjusting mechanism can change the spacing from the nom-
inal position 6 mm closer together and 10 mm farther apart. Based on the above
data set the mechanism set to the minimum position. Set the movable snapping
plate (1) relative to the fixed one (2) 21 mm at the front and 26 mm at the back then
secure it! In-cab operation should result in the 27-32 mm distance. Effort should be
made to set the same value on each row to ensure the same operation of all the
snapping units! The fix snapping plate is secured by four hex socket head bolt, after
removing them the fix snapping plate can be adjusted up to 14 mm. With regards to
the dimension marks in the figure, after the initial setting, A
=
21 and B
=
26; after
adjusting the central mechanism the A
=
27 and B
=
32.
8.6 Adjustment of the cleaning knives (1, 2)
The optimal gap between the cleaning knife and the stalk roll is 0,5-1 mm. This gap
should be set on one rib and all rib clearances should be checked by the rotation of
the roll to ensure no interference. Adjustment is made by loosening the M-8 screws
(3). Adjusting the other cleaning knife is done the same way.