Section 5: Maintenance & Lubrication
RCFM4014 Rotary Cutter 326-730M
8/11/14
36
Fixed Blade Installation
1.
Attach flat cutter blade (#6) with beveled edge facing
away from blade mount (#1) with 3/4"-10 x 2" GR5
bolt (#2),
new hex flange top locknut
(#5),
1/2"-10 x 2" GR5 bolt (#3), and whiz nut (#4).
2. Tighten nuts to the correct torque.
Main Driveline Slip Clutch
WARNING
!
To avoid serious injury or death:
•
A slip clutch that has been in use or has slipped for as little
as only two or three seconds during run-in may be too hot
to touch. Allow a hot clutch to cool before working on it.
•
Always shut tractor down using “Tractor Shutdown
Procedure” provided in this manual before dismounting
Friction clutches must be capable of slippage during
operation to protect gearboxes, drivelines, and other
drive train parts. Friction clutches should be “run-in” prior
to initial operation and after periods of inactivity to
remove any oxidation from the friction surfaces. Repeat
“run-in” at the beginning of each season and when
moisture seizes the inner friction plates.
Clutch Run-In
1.
Using a pencil or other marker, scribe a line across the
exposed edges of the clutch plates and friction disks.
2. Carefully loosen each of the 8 spring retainer nuts by
exactly 2 revolutions. It will be necessary to hold hex
end of retainer bolt in order to
count the exact
number of revolutions
.
3. Make sure the area is clear of all bystanders and the
implement is safe to operate.
4. Start tractor and engage power take-off drive for 2-3
seconds to permit slippage of the clutch surfaces.
Disengage power take-off, then re-engage a second
time for 2-3 seconds. Disengage power take-off, shut
off tractor, and remove key. Wait for all components to
stop before dismounting from tractor.
5. Inspect clutch and ensure that the scribed markings
made on the clutch plates have changed position.
Slippage has not occurred if any two marks on the
friction disk and plate are still aligned. A clutch that
has not slipped must be disassembled to separate
the friction disk plates. See
below.
IMPORTANT:
Prior to initial operation and after 10
6. Tighten each of the 8 spring retainer nuts on the
clutch housing exactly 2 revolutions to restore clutch
to original setting pressure.
7.
Allow clutch to cool to ambient temperature before
operating again. Clutch is now ready for use.
8. The clutch should be checked during the first hour of
cutting and periodically each week. An additional set
of scribe marks can be added to check for slippage.
See Figure 5-7 to adjust spring length.
Type A Clutch Run-In
Figure 5-6
Clutch Adjustment
Figure 5-7
Driveline
No.
Driveline
Location
Power
Take-Off
Speed
Cat
No.
A (inches)
Spring Height
326-728A
Main
1000
5
1.11 to 1.12"
326-729A
Main
1000
5
1.11 to 1.12"
13693
24600