Page E-2
Repair and Service Manual
B
CONTINUOUSLY VARIABLE TRANSMISSION (CVT)
Read all of Section B and this section before attempting any procedure. Pay particular attention to Notices, Cautions, Warnings and Dangers.
Increased Load
When a vehicle traveling at governed speed begins to
climb a grade or is subjected to other increased load
conditions, a change in wheel speed is detected by the
clutch system and the drive belt seeks a position where
it can achieve adequate friction to overcome the load
change. The belt moves outwards on the driven clutch
which closes due to the torsion spring moving the move-
able sheave against the torque ramps. The movement of
the drive belt overcomes some of the centrifugal force
exerted by the cams in the drive clutch. This forces the
belt lower into the drive clutch which increases the drive
ratio. This 'downshifting' applies more torque to the rear
axle without an appreciable change to the engine speed
since the governor opens the carburetor in direct
response to the reduction in ground speed.
Equilibrium
The CVT functions because the drive and driven
clutches maintain equilibrium. Clutch sets are tuned to
the vehicle that they are designed to operate. Changes
in vehicle weight or desired performance characteristics
require that both clutches be tuned to the needs of the
vehicle and remain compatible with each other.
Drive Clutch Removal
Tool List
Qty.
Plastic faced hammer ..................................................1
Socket, 5/8” ..................................................................1
Ratchet ........................................................................1
Clutch puller (PIN 19779G2)........................................1
Impact socket, 13/16”...................................................1
Impact wrench..............................................................1
Thread locking adhesive ...........................................AR
Torque wrench, ft. lbs...................................................1
Fig. 2 CVT Components
1
8
9
10
11
12
2
5
6
7
3
4
Содержание 625619 2012
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