Multiquip HHN34TVD - Manual (Page 30)

page 30 — HHN34TVD RIDe-ON TROWeL • OpeRaTION maNuaL — ReV. #2 (01/10/11)
SpaRe DRIVe BeLT RepLaCemeNT
To replace a spare drive belt, be prepared to disconnect the
CV-joint from the left-side gearbox. See Figure 20.
1. Place the trowel on suitable supports and observe all
safety precautions.
2. Remove the three screws that secure the CV-joint to
the left-side gearbox coupler.
3. Once the CV-joint has been separated from the left-
side gearbox, push the CV-joint inward so that a gap
exists between the gearbox and the CV-joint. Slide
the spare V-belt between the gearbox coupler and the
CV-joint. Avoid contaminating the replacement belt with
grease or oil when sliding it between the CV-Joint and
gearbox coupler.
4. Place the spare drive belt inside the drive belt carrier,
and secure the spare belt carrier to the inboard side
of the left gearbox.
5. Install the three screws that secure the CV-joint to the
left-side gearbox coupler.
Figure 20. Replace Spare Belt
SPARE BELT
HOLDER
BOLT
(REMOVE
3 PLACES)
NEW
SPARE
BELT
LEFT
SIDE
GEARBOX
CV-JOINT
Maintenance (OlD Style clutch)
TORque CONVeRTeR
The HHN34TVD trowel is equipped with a Torque Converter
which supplies torque to both the left and right gear boxes.
The function of the torque converter is to automatically
deliver the correct amount of torque required by the trowel
under all load conditions. This enables the trowel to deliver
the necessary torque for float pan applications and the high
rotor speeds required for burnishing concrete.
The torque converter is of the variable pitch pulley type,
(Figure 21) connected by a drive belt.
Figure 21. Torque Converter/Variable Pitch
Pulley
DRIVe puLLey
The drive pulley uses centrifugal force (Figure 22 and
Figure 23) to create a belt squeeze force transmitted at the
pulley faces. This condition functions as an automatic clutch.
Figure 22. Torque Converter (Centrifugal Force)
TORQUE
CONVERTER
DRIVE
BELT
VARIABLE
PITCH
PULLEY
COMET
CLUTCH
FIXED FACE
BELT
SQUEEZE
FORCE
VARIABLE
FORCE
CENTRIFUGAL
FORCE