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SAFETY, OPERATORS, MAINTENANCE & PARTS MANUAL
8
ADJUSTMENT
Read Safety Instructions
HEIGHT OF CUT
It is important to set the rear roll parallel to the
bottom blade (bedknife) in order to achieve the
minimum height of cut setting for the three ranges
of height, in the three sets of mounting housing (D)
bolt holes. Positions 'A','B' &'C'.
Setting the minimum height with the mounting
housings (D) in position 'A' will allow minimum
height and parallelism to be achieved in each of the
other two positions 'B' & 'C'.
Once the range has been chosen the actual height
of cut is set by adjusting the front roll only by
carriage screws (F) and locknuts (J).
TO SET REAR ROLL
with a new bottom blade (bedknife)
1.
Set the height of cut setting bar (G)as
follows:
a. Screw X to 12mm(15/32in) under the
head.
b. Screw Y to 6.5mm (1/4in) to screw thread
tip.
Note: The difference between screw X and screw
Y is 5.5mm (7/32in).
2.
Set roll carriage mounting housing(D) bolts
into holes 'A'.
3.
Place the setting bar (G)as shown at one
end of the bottom blade with the screw head
X over the lip and screw thread Y tip against
base of blade.
4.
Adjust the roll to the setting bar (G) with the
two locknuts(H) holding setting bar screws
in contact.
5.
Repeat for other end of bottom blade
(bedknife).
TO SET HEIGHT OF CUT
Chose the range of height in which cutting is to be
carried out and then adjust front roll only.
1.
Preset the height of cut setting bar (G)as
follows:
a. Screw X to the required height of cut
under the head.
b. Screw Y is not used.
2.
At one end of the bottom blade (bedknife) lay
setting bar (G) on rear roll with screw head
over bottom blade (bedknife) lip.
3.
Adjust front roll to the setting bar by means
of the two front locknuts (J).
4.
Repeat for the other end of the bottom blade
(bedknife).
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JACOBSEN FAIRWAY & T-PLEX CUTTING UNITS
Minimum
Height of
Maximum
Height of
Cut Range
Height of Cut
Cut
12.0mm
19.0mm
Holes 'A'
15/32"
19.0mm
35.0mm
Holes 'B'
3/4"
1-3/8"
27.0mm
47.0mm
Holes 'C'
1-1/16"
1-25/64"
CAUTION
The height of cut range for each set of
holes takes into account the requirement
of the cutting unit to float. Increasing the
maximum height of cut in any of the hole
setting ranges could restrict the ability of
the cutting unit to float.
8
ADJUSTMENT
CUTTING CYLINDER TO BOTTOM BLADE
ADJUSTMENT
To check that the cutting cylinder is set to the
bottom blade correctly, hold a piece of thin paper
between the edge of the blade and the spiral
cutters and turn the cylinder manually.
The paper should be cut cleanly along the total
length of the bottom blade, if not, some adjustment
may be necessary, BUT DO NOT OVERTIGHTEN.
Alternatively if the cylinder is worn it may require
back lapping before adjusting.
To adjust:
1. To adjust the cylinder to the bottom blade lift
and turn alternately left and right hand handwheels
(A Fig.3). (clockwise to put on cut anticlockwise
to take off cut) and release, keep turning the
handwheel until it locates in the serrated locking
ring. The adjuster is of the notched type and
each notch is moving the cylinder in increments of
approximately 0.04mm (0.0015in).
3/4"
THIS IS A SELF LOCKING MECHANISM THERE
BEING NO NECESSITY TO UNLOCK OR LOCK
THE MECHANISM.
IMPORTANT: IN ROUGH GROUND
CONDITIONS IT MAY BE NECESSARY TO
LOCK THE NUTS SECURING THE BEARING
HOUSINGS TO THE SIDE FRAME WHERE
THEY RUN IN ADJUSTING SLOTS TO RETAIN
CYLINDER TO BOTTOM BLADE SETTINGS.
EXPERIENCE WILL DICTATE THIS. THE NUTS
SHOULD NORMALLY BE TIGHTENED FULLY
AND THEN BACKED OFF 1/2 A TURN TO ALLOW
HANDWHEEL ADJUSTMENT WITHOUT THE
NEED TO UNLOCK THE NUTS FIRST.
CUTTING CYLINDER BEARINGS
The cutting cylinder bearings are self adjusting
taper roller bearings and require no adjustments.
FRONT AND REAR ROLL BEARINGS
The roll bearings are self adjusting taper roller
bearings and require no adjustment
JACOBSEN FAIRWAY & T-PLEX CUTTING UNITS
SAFETY, OPERATORS, MAINTENANCE & PARTS MANUAL
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