Land Pride 311-252M - Manual (Page 25)

23 5/17/13 RTA10 & RTA15 Series Rotary Tillers 311-252M
Section 4: Maintenance & Lubrication
Table of Contents
Clutches With 8 Hex Socket Bolts
Clutch Run-In
Refer to Figure 4-3 on page 23:
1. Loosen counterclockwise all 8 hex head socket bolts
uniformly 6 full turns.
2. Cycle clutch on and off 5 or 6 times (15 seconds on
and 15 seconds off) with the engine operating at half
throttle. Disengage driveline, shut off tractor, and
remove key. Wait for all components to stop before
dismounting from tractor.
3. Tighten hex head socket bolts fully back. Clutch is
ready for use
4. The clutch should be checked during the first hour of
cutting and periodically each week.
Clutch Run-In With 8- Hex Head Socket Bolts
Figure 4-3
Clutch Disassembly & Assembly
Refer to Figure 4-4 on page 23:
If clutch run-in procedure above indicated that one or more
friction disks did not slip, then the clutch must be
disassembled into separate friction disks.
1. Rotate 8 hex head socket bolts (#4) all the way out to
free stop flange (#5).
2. Record position of the lips (up or down) on stop
flange (#5) and then rotate flange and remove it.
3. Remove the following inner components:
a. Spring kit (#6)
b. Pressure flange (#7)
c. 1st Friction Disc (#8)
d. Hub with flange and pull collar (#2 & #3)
e. 2nd Friction disc (#8)
f. Bearing (#9)
4. Inspect all components and replace to their original
position. Make certain stop flange (#5) is replaced
with its flanges in its original position. See important
note in Figure 4-4.
5. Fully tighten all 8 hex head socket bolts (#4).
Hex Head
Socket Bolts
21270
IMPORTANT: Check position of lip on stop flange.
(UP or DOWN). Replace stop flange with lip UP if
one spring (#6) is included and DOWN if two
springs (#6) are included.
Clutch Assembly
Figure 4-4
Shearbolt Protection
Avoid shear bolt breakage by making sure the tiller is out
of the ground before engaging PTO and by engaging
PTO slowly at low engine rpm. Increase engine speed to
540 RPM only after tines are rotating.
See table below for correct shear bolt and nut part
numbers. Torque shear bolt nuts to 7-9 ft- lbs.
21302
IMPORTANT: Replace shear bolts with original
Land Pride equipment from your Land Pride Dealer.
Shear Bolt and Lock Nut Part Numbers
Part No. Part Description
RTA10
802-683C
M8 x 45 GR 8.8
803-278C M8 Lock Nut (Torque nut to 7-9 ft. lbs.)
RTA15
802-115C
5/16"-18 x 2 GR 5 bolt.
803-011C 5/16"-18 Lock Nut (Torque nut to 7-9 ft. lbs.)