Specifications

300 SERIES MAN HOLE DIGGER
FORM GOM12070702, VERSION 1.2
44
FIGURE 36
It is important to note that the precision
machining tolerance between the driveshaft
diameter and the secondary gear inside
dia m et er c an c a us e bin di n g dur i ng
ass embly. This bindi ng can prevent the
gear from firmly seating against the Nilos
rin g and be t he cau s e of e xc es sive
driveshaft freeplay.
18) Reinstall the primary gear and pinion assembly. If
the existing transmission gasket is damaged, replace
with PNG 310-0101 gasket. Use of a transmission
gasket is required to provide for adequate
clearance. Do not substitute a silicon material or
gasket adhesive for a factory approved gasket.
Realign the transmission dowel pins when reinstalling
the engine and cover assembly. Torque all fasteners to
20 foot pounds (27 N.m.) in an "X" sequence.
19) Rotate the final driveshaft and check for excessive
noise and/or binding. If excessive noise and/or binding
is evident, disassemble the transmission and
investigate for probable causes. Reassemble and
retorque to the specified amount. Recheck again for
excessive noise and/or binding.
20) Fill the transmission with oil. Refer to the Service
section for the correct amount and type.
CENTRIFUGAL CLUTCH REMOVAL AND
INSTALLATION.
Application: 330H, 343H and 357H Hole Diggers
powered by the Honda GXV160 engine.
The 330H, 343H and 357H Hole Diggers utilize an all
metal centrifugal clutch rotor and shoe assembly that
expands with engine RPM to engage the clutch drum
and transfer torque. The centrifugal clutch rotor and
shoe assembly is mounted to and operates
concentrically about the engine crankshaft. Symptoms
for replacement of the clutch assembly include the
following:
1) Excessive clutch slippage and auger stalling at full,
governed engine speed.
2) Partial clutch engagement (and resulting auger
rotation) at the specified engine idle speed.
To replace the clutch assembly, proceed as follows:
Tools Required:
2 each, 1/2 inch wrenches
1 each, three jaw gear puller (if required)
1 each, plastic hammer
1 each, torque wrench, 240 inch pound (27 N.m.)
capacity with 1/2 inch socket
1 each, 1 inch (25.4 cm) capacity micrometer
1 each, feeler gauge set
1 each, 3/16 inch Allen wrench
1 each, 1/8 inch, long handle type Allen wrench
Parts Required:
1 each, PN 3516 drum and pinion assembly
1 each, PN 330H-0175 rotor and shoe assembly
1 each, PN 200682 plastic washer
1 each, PN 310-0101 transmission gasket (if required)
1 each, PN 6, alloy Woodruff key (if required)
1 each, container of high temperature, anti-seize
compound
1 each, container of wicking grade, anaerobic
adhesive/sealant
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 vise.
1) Drain the fuel from the fuel tank, oil from the
transmission and oil from the engine. Refer to the
Service section for more detailed information.