Section 2: Adjustments
RC(M)3712 & RCG(M)3712 Rotary Cutters 334-203M
11/6/18
26
Lift Cylinder Adjustment
Refer to
To get best range of motion, put lift cylinder (#2) in bottom
hole (as shown) when cutter is supplied with 21"
laminated tires. Put the lift cylinder (#2) in the top hole (A)
when the cutter is supplied with larger tires. When
supplied with larger tires, overall ground clearance can
be increased by putting the lift cylinder (#2) in the bottom
hole (as shown), but low cutting height range will be
sacrificed.
WARNING
!
To avoid serious injury or death: Stay clear from underneath
the cutter and directly behind transport tires. The cutter could
fall suddenly causing the decks to lower and tires to roll back.
1.
Park tractor and cutter on a level surface.
2. Fully extend deck lift cylinder (#2) and fold cylinders
to lower the wings.
3. Without relieving hydraulic pressure, shut tractor
down properly before dismounting. Refer to
on page 13. Place sturdy
support blocks or jack stands under the four corners
of the center deck.
4. Remove stroke control spacers from lift cylinder (#2).
5. Return to the tractor seat and start the tractor. Lower
the center deck onto support blocks. Shut the tractor
down properly before dismounting. Refer to
6. Remove hairpin cotter and hitch pin (#5) on both
ends of cylinder.
7.
If moving from hole (A) to bottom hole, measure the
distance between the bottom hole and cylinder hole
on axle. Over a bucket or oil catch, crack hose fitting
to drain oil and retract cylinder to below measured
length. clean cylinder and dispose of oil properly.
8. Reposition hydraulic cylinder to the desired mounting
hole, reinsert hitch pin (#5) and secure hairpin cotter.
9. With jack or overhead lift, lift the rear axle to align with
rod end of cylinder (#2) and reinsert hitch pin and
secure with hair pin. Remove jack or lift straps.
10. Return to the tractor and fully extend center deck lift
cylinder to raise the deck up.
11. Without relieving hydraulics, shut tractor down
properly before dismounting. Refer to
on page 13. Replace stroke
control spacers and remove support blocks from
under the four corners of the center deck.
Park Jack Angle Alignment
The jack mount angle should be adjusted to position the
park jack vertical while supporting the cutter hitch. This
angle will vary depending on the number and size of
stroke control spacers placed on the lift cylinder rod.
1.
With cutter hitched to a tractor, lower cutter to storage
height.
2. Shut tractor down properly before dismounting. Refer
to
3. Install park jack (#7). See
page 13. Check jack angle. If jack is not vertical,
proceed with step 4 below.
4. Remove hex nut (#3), lock washer (#5) and carriage
bolt (#2).
5. Loosen 1" hex nut (#4). Do not remove.
6. Rotate jack mount (#1) to align jack as near vertical
as possible.
7.
Replace 1/2"-13 x 1 1/2" GR5 carriage bolt (#2) and
secure with lock washer (#5) and hex nut (#3).
Tighten hex nut to the correct torque.
8. Tighten 1" hex nut (#4) to 645 ft-lbs.
9. If moving cutter, skip to step 10. If unhooking cutter,
10. If cutter is to be moved, remove park jack (#7) from
hitch frame and attach it to the left-hand wing storage
base. Make sure base of park jack is level with or
lower than the head, especially after the wings are
folded up. See cover picture for correct positioning.
Park Jack Angle Alignment
Figure 2-1
Level Cutter Decks
These adjustments should be made with your cutter
hooked to the tractor that will be operating the unit or to a
tractor having the same drawbar height.
NOTE:
Refer to decal (#6) and instructions below
for jack alignment and torque value instructions.
NOTE:
If cutter is not hitched to a tractor, support
blocks should be placed under the front skid shoes
to support cutter while aligning park jack vertically.
70471
Section 2: Adjustments
