1340 / 1526
4
CLUTCH
4A. CLUTCH DISC
(Fig.3)
Outside diameter
240 +1 mm.
Inside diameter
170 + 1.5 mm.
_ 1.0
Thickness of clutch disc
8.2 ± 0.3 mm.
with new lining under
850 kg load ‘A’
Parallelism of
0.15 mm.
clutch linings
Maximum permissible
30 gm-cm.
imbalance of clutch disc
Cushioning of clutch disc
0.65/0.9 mm
Spline specification of
23 Teeth involute
clutch disc
Total friction area
452
sq.cm.
(both sides)
4B. CLUTCH PRESSURE PLATE ASSEMBLY
(Fig.4)
Height of pressure plate
46.5 mm.
housing ‘A’ max.
Height of diaphragm
47.6 ± 1 mm.
tip from cover mounting
surface ‘B’
Max. permissible imbalance 25 gm-cm.
of pressure plate assembly
Max. permissible face run
0.8 mm.
out of release bearing
contact surface of diaphragm
Clamp load on clutch disc
750 (min.)
kg.
Diaphragm release load Max.
160 kg.
(with Disc)
Tip travel, 'C'
8.4 +1 mm.
Max tip travel after use of disk, 'D' max. 7.7 mm.
Pressure plate lift for
min. 1.4 mm.
release travel 8.4 mm
4C. CLUTCH ACTUATION HYDRAULIC SYSTEM
Clutch master cylinder
19.05 mm.
diameter
Clutch master cylinder
34.5 mm.
stroke
Slave cylinder diameter
23.81 mm.
Slave cylinder stroke
52.0 mm.
5. REMOVAL OF CLUTCH FROM VEHICLE
l
Place chokes on wheels to prevent movement of
vehicle.
l
Disconnect battery and electrical connections of
the starter motor.
l
Loosen mounting bolts and remove starter motor.
l
Unlock and remove U/J cross mounting strip
screws at gear box end. Disconnect propeller
shaft from gear box and suspend it sideways
suitably.
l
Loosen and remove clutch slave cylinder
mounting nuts and tie it suitably.
l
Pull out reverse indicator switch cable connector.
l
Disconnect speedo cable.
l
Disconnect and remove gear box along with
adaptor plate (Follow the procedure given in gear
box group for removal of gear box assembly from
vehicle)
l
Unscrew clutch housing bottom cover mounting
screws and remove cover.
l
Remove Assy. clutch release bearing with fork
from ball pin.
l
As a safety measure, support clutch pressure
plate and clutch disc with mandrel. Unscrew six
mounting bolts evenly (alternately and crosswise)
in small steps.
l
Remove clutch pressure plate assembly and
clutch disc along with the mandrel.