Section 2: Adjustments
8/22/23
RC4615 & RCM4615 Rotary Cutters 331-644M
28
Section 2: Adjustments
Park Jack Alignment
Figure 2-1
Park Jack Angle Alignment
Refer to Figure 2-1:
The angle of jack mount (#1) should be adjusted to
position the park jack vertical while supporting the cutter.
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) to jack mount (#1). See
on page 16. Check jack angle.
•
If jack angle is vertical, skip to step 9.
•
If jack angle is not vertical, continue with step 4.
4.
Remove 1/2" 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 (#3) 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,
see
on page 26 for detailed
instructions.
10. If cutter is to be moved, remove park jack (#7) from
jack mount (#1) and attach it to the weight box
storage base. Make sure base of park jack is level
with or lower than the head. See cover picture for
correct positioning.
39461
NOTE:
If cutter is not hitched securely to a tractor,
place support blocks under the front skid shoes to
support cutter while aligning the park jack vertically.
NOTE:
Refer to decal (#6) and instructions below
for jack alignment and torque value instructions.
Front Skid Position (Chain Guards Removed for Clarity)
Figure 2-2
Level Cutter Decks
These adjustments should be made with cutter hooked to
the tractor operating the unit or to a tractor having the
same drawbar height.
Center Deck Leveling
Refer to Figure 2-2 & Figure 2-3 on page 29:
1.
With cutter attached to a tractor, disengage power
take-off, and park on a level, hard surface. Place
tractor gear selector in park or set park brake.
2.
Wait for blades to come to a complete stop and then
fold wings up to transport position.
3.
Shut tractor engine off and remove switch key before
dismounting from tractor.
4.
Set transport locks to keep wing decks from falling.
See
on page 35 for instructions.
5.
Using hydraulic lift, adjust center deck height so that
the front skids (#2) are 2 to 3 inches above ground.
6.
On both sides of the center deck are continuous
hinges (#1). Measure distance from bottom of hinges
to ground at the front and back. They should be equal
distance off the ground at the back and 1" closer to
the ground at the front than they are at the back.
If continuous hinges (#1) are too high in front:
a. Loosen jam nuts (#3).
b. Loosen adjusting nuts (#4) an equal amount to
lengthen leveling rods (#5 & #6) until hinges (#1)
are inclined from front to back by 1" with the front
closer to the ground than the back.
If continuous hinges (#1) are too low in front:
a. Loosen jam nuts (#3) several turns.
b. Tighten adjusting nuts (#4) an equal amount to
shorten leveling rods (#5 & #6) until hinges (#1)
are inclined from front to back by 1" with the front
closer to the ground than the back.
7.
Be sure both sides are equal distance from ground to
hinges (#1) and leveling rods (#5 & #6) have equal
tension. Re-tighten jam nut (#3).
37577
NOTE:
Loosening coupler nuts (#4) will lengthen
leveling rods (#5 & #6) and lower front of cutter.
Tightening coupler nuts (#4) will shorten leveling
rods (#5 & #6) and raise front of cutter.
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