TYM T390 Service Manual

4-6
3) Adjustment of pressure springs.
When the friction surfaces of the pressure plate
and the flywheel are repaired by grinding or
machining the installation height of the pressure
springs increase by the ground-off value both on
the flywheel and the friction plate resulting in
decreased spring tension.Consequently,adjusting
washers equivalent to the ground-off value must
be inserted between the spring seat and the
pressure spring.
Insert a washer of the same
thickness as the ground-down
thickness
Fig.4-12
(3) Inspection of the pressure springs
Check the pressure springs for free length,
deviation from vertical and tension,and
replace them if they are fatigued or deformed.
1) Measure their free length with vernier
calipers.
Excessively fatigued ones should be replaced.
82mm(3.23)
Usable limitFree length:
87.4mm(3.44in)
Fig.4-13
2) Measure the deviation from vertical using a
square,Replace springs which are slanted
more than approximately 2 degrees.
Fig.4-14
3) The coil ends of the springs should be level
for More than two thirds of the circumference
for proper seating and vertical positioning.
Fig.4-15
(4) Inspection of other parts.
Inspect the release levers,return springs,lever
plates,clutch cover assembly,spring cap,and
Lever bolts for wear,damage,and deformation,
and replace parts which exhibit abnormalities.
Fig.4-16

TYM T390 Specifications

General

Brand	TYM
Model	T390
Category	Tractor
Language	English