Section 1: Assembly & Set-up
RC(M)3712 & RCG(M)3712 Rotary Cutters 334-203M
11/6/18
22
Driveline Clearance Check
Refer to
Check driveline for adequate clearance under all ranges
of cutter height.
1.
With driveline shaft attached to the tractor and all
stroke control spacers (#6) removed from hydraulic
cylinder (#4), slowly raise and lower cutter to its
upper and lower limits while observing clearances
between hitch and driveline. Adjust tractor drawbar
height and/or length if driveline interferes. See Figure
1-1 on page 11 for correct drawbar dimensions.
2. It may be necessary to purge lift cylinder, wing
cylinder, and hydraulic hoses of trapped air if
operation is sluggish. Cycle cylinders back and forth
several times to purge air from them. For additional
details, see
.
Purge Hydraulic System
DANGER
!
To avoid serious injury or death: Never remove or install a
folding wing cylinder with cylinder rod retracted and wing
folded up. The wing is unstable without its folding cylinder
and can suddenly fall. Also, air trapped in a new or repaired
cylinder will drop the wing suddenly when lowering the wing.
Either situation can render the cutter inoperable and cause
serious bodily injury or death.
WARNING
!
To avoid serious injury or death: Be sure center and wing
decks are lowered to the ground and all hydraulic pressure is
relieved before disconnecting any hydraulic lines or fittings to
Wing Fold Cylinder
1.
Lower center deck until it is supported by stroke
control spacers (#6) on hydraulic cylinder (#4).
2. Lower wing decks until they rest on the ground.
3. See
Shut tractor down properly and move deck lift control
lever back and forth to relieve all hydraulic pressure.
4. Slightly loosen hydraulic hose fitting (#2) on right-
hand wing cylinder (#1) to allow air to escape.
5. Restart tractor and slowly activate tractor control
lever to retract wing cylinder (#1), and to purge
trapped air from the hydraulic system.
6. Shut tractor down properly. See
7.
Tighten hose fitting (#2) at right-hand wing cylinder.
8. Repeat steps 4-7 above to purge the left-hand wing
cylinder (#3).
Deck Lift Cylinder
1.
Remove all hydraulic stroke control spacers (#6) and
lower center deck.
2. See
Shut tractor down properly and move deck lift control
lever back and forth to relieve all hydraulic pressure.
3. Slightly loosen hydraulic hose fitting (#5) on deck lift
cylinder (#4) to allow air to escape.
4. Restart tractor and slowly activate tractor control lift
lever to extend lift cylinder (#4) and to purge trapped
air from the hydraulic system.
5. Shut tractor down properly. See
6. Tighten hose fitting (#5) on lift cylinder (#4).
Purge Wing & Center Deck Cylinders
Figure 1-23
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