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DRIVETRAIN-TA65 Star
INTRODUCTION
Drive
train consists of Clutch, Transaxle and Drive shaft
.
CLUTCH –
The clutch in BOLT and ZEST are a single disc dry friction type with a diameter of 200 mm.
It is of diaphragm type and is mechanically actuated by a cable connecting clutch pedal
and the clutch release lever. No clutch pedal free play adjustment is required although
clutch pedal height from floor has to be adjusted as the clutch lining wears. The clutch
pedal height from the floor keeps on increasing as the clutch lining wears.
TRANSAXLE –
The BOLT and ZEST has a transversely mounted engine and transaxle. This layout of
engine is typical of front wheel driven car. The gear box and differential are integrated into
a single housing termed as Transaxle. The drive is transmitted to front wheels from
differential side gears through constant velocity shafts.
The final reduction is done by a pair of helical gears. All the forward gears are
synchromesh (with first and second – double synchromesh and other gears single
synchromesh) and reverse gear is sliding mesh.
The gear shifting conforms to international H pattern, 5th and reverse being in line. All lay
shaft gears are free on it without needle bearings.
There is no pilot bearing for the input shaft and there are no control dimensions to be
maintained on input shaft and lay shaft. Pinion is integral with the Lay shaft and all the
gears on the Lay shaft are locked by circlips.
Speedo Sensor is located on differential housing.
DRIVESHAFT –
Driveshaft assemblies transmit engine power to independently suspended wheels. They
consist of an inner and outer constant velocity joint connected by an axle shaft. The inner
joint is completely flexible and can move in and out. The outer joint is also flexible, but
cannot move in and out.