General 240H Operator's Manual page 38

240H ONE MAN HOLE DIGGER
FORM GOM14081201, VERSION 1.1
To replace the clutch rotor and shoe assembly, proceed
as follows:
Tools required:
1 each, 7/16 inch wrench.
1 each, 17 mm socket with impact wrench
1 each, container of Locktite 609 or equivalent
1 each, torque wrench, 120 inch pounds (13.4 N.m.)
capacity and 17 mm socket.
Parts Required:
1 each, PN 240 0100 transmission gasket (if required)
1 each, PN 240-0160 drum and pinion shaft assembly
(if required)
1each, PN 240-0170 rotor and shoe assembly
Centrifugal clutch removal and installation will require a
level working platform of sufficient size and appropriate
height. As an alternative, the transmission driveshaft
assembly can be securely mounted in a suitable bench
vice.
The transmission is designed to allow removal of a
worn centrifugal clutch rotor and shoe assembly
without requiring the transmission cover and case to be
disturbed. Upon inspection, if the centrifugal clutch
drum and pinion shaft requirement replacement, the
transmission case and cover will then require further
disassembly.
1) Drain the fuel from the fuel tank and oil from the
engine into UL approved containers. Wipe any excess
®
spilled liquids and dispose of properly. Refer to the
Service section for more detailed information.
GASOLINE IS AN EXTREMELY FLAMMABLE FUEL.
USE EXTREME CAUTION WHEN HANDLING
GASOLINE. DO NOT SMOKE OR BRING ANY FIRE
OR FLAME NEAR THE FUEL.
2) Using the 7/16 inch wrench, remove the four K-lock
type nuts that retain the engine to the transmission.
Separate the engine from the transmission.
3) Position the engine with the rotor and shoe assembly
facing up and properly secured.
4) Using the impact wrench and 17 mm socket, remove
the two retaining capscrews. Threads are right handed.
Remove the rotor and shoe assembly from the engine
flywheel.
5) Clean the engine flywheel and clutch drum areas
with an appropriate solvent.
Observe all applicable safety precautions for the
solvent.
6) Inspect the engine flywheel, crankcase castings,
mounting studs and clutch drum for cracks and other
signs of visible of damage. Any damaged component
will require immediate replacement with a suitable,
factory-replacement part.
7) If the clutch drum shows signs of severe wear and/or
damage, it will also require immediate replacement.
Refer to CENTRIFUGAL CLUTCH DRUM AND
PINION SHAFT REMOVAL AND INSTALLATION.
Severe wear is defined as:
a) Deep grooves cut into the walls of the drum that
measure greater than 3.140 inches (79.76 mm).
b) A deep, dark blue color that might indicate sustained
operation at high temperatures while slipping.
Extended and sustained operation can potentially
weaken the structural integrity of the brazed connection
between the drum and pinion shaft.
8) Clean and inspect the hardware that retains the rotor
and shoe assembly to the engine flywheel. Replace
any component with a factory approved replacement
part if cracks and other signs of visible damage are
present.
9) Apply Locktite 609 or equivalent to the shoulder bolt
threads.
10) Locate the replacement clutch rotor and shoe
assembly and thrust washers on the engine flywheel with
the direction arrow pointing in a counter-clockwise
direction. FIGURE 19. This orientation properly maximizes
the torque transmitting capabilities of the clutch.
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