Section 4: Maintenance & Lubrication
RTA1558, RTA1566, & RTA1574 Rotary Tillers 311-252M
12/19/18
21
Section 4:
Maintenance & Lubrication
Maintenance
Proper servicing and adjustments are key to the long life
of any implement. With careful inspection and routine
maintenance, you can avoid costly downtime and repair.
Check all hardware after several hours of operation and
regularly thereafter to ensure they are tight and secured.
Replace worn, damaged, or illegible safety labels by
obtaining new labels from your Land Pride dealer.
WARNING
!
To avoid serious injury or death:
•
Before any adjustments or maintenance is performed, lower
implement to ground, shut engine off, and remove switch
key. Do not attempt to make adjustments or perform
maintenance with implement or power machine running.
•
Do not alter implement or replace parts on the implement
with other brands. Other brands may not fit properly or
meet OEM (Original Equipment Manufacturer)
specifications. They can weaken the integrity and impair the
safety, function, performance, and life of the implement.
Replace parts only with genuine OEM parts.
Tine Replacement
Refer to Figure 4-1:
WARNING
!
To avoid serious injury or death:
Used tines can be very sharp. Always wear gloves when
handling tines to protect against cuts.
1.
Remove the 2 hex head cap screws and fasteners
from the tine being replaced and then remove tine.
2. Attach new tine to the mounting flange making
certain it is positioned so that the cutting edge
crosses over the mounting flange and leads in
rotation as shown in Figure 4-1.
3. Replace cap screws and nuts. Tighten nuts to the
proper torque. Repeat steps 1 to 3 until tines have
been replaced.
Driveline Protection
Tiller drive components are protected from shock loads
with either a two plate friction clutch or a shear bolt.
Shear bolt protection is discussed on page 23.
Friction clutches should be “run-in” prior to initial
operation and after long periods of inactivity to remove
any oxidation that may have accumulated on the friction
surfaces. Repeat “run-in” instructions at the beginning of
each season and when moisture and/or condensation
seizes the inner friction plates.
IMPORTANT:
When ordering tines, be sure to order
IMPORTANT:
Remove and install one tine at a time
to ensure they are oriented correctly when installed.
Refer to Figure 4-2 below and Figure 4-3 on page 23 to
determine which friction clutch your tiller has. Follow
run-In, disassembly, and assembly instructions for your
specific clutch.
Figure 4-1
Clutches With 4 Adjusting Nuts
Clutch Run-In
Refer to Figure 4-2 (View - A):
1.
Using a pencil or other marker, scribe a line across the
exposed edges of the clutch plates and friction disks.
2. Tighten all 4 nuts uniformly until spring load is low
enough that clutch slips freely with power take-off
engaged.
Clutches With 4 Adjusting Nuts
Figure 4-2
3. Start tractor and engage power take-off for 3 seconds
to permit slippage of 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.
4. 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
Refer to Figure 4-2 (View - B):
5. Turn all 4 nuts fully back if no two marks on the
friction disk and plate are still aligned. Clutch is ready
for use.
6. The clutch should be checked during first hour of
tilling and periodically each week. An additional set
of scribe marks can be added to check for slippage.
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