TYM T233 HST User Manual

4. RELIEF VALVE (Reference)
1)GENERAL DESCRIPTION
This valve regulates the maximum pressure in
the whole hydraulic circuit.The regulated
pressure can be set with the adjust screw.
Fig. 9
-
9 Relief valve in PTO solenoid V/V
2) PRECAUTIONS FOR DISASSEMBLY
AND REASSEMBLY
(1)Tightening torque of lock nut (9)5.0∼6.0
㎏f·㎠(36.2∼43.4 ft.lbs)
(2)Install seat(2)and then tap ball(3)(5/16)
lightly so as to provide tight seating.
(3)Wrap the valve threads with sealing tape
and tighten the valve up to a specified
torque of 5-6Kgf.m(36-43 ft.lbs)
(4)Before disassembly, the current
screwing-in depth of the adjust screw
should be written down or memorized for
later reference.
3) MEASUREMENT OF THE RELIEF
PRESSURE
(1)3 POINT TO TEST RELIEF PRESSURE
Fig. 9
-
9 Relief valve in PTO solenoid V/V
Fig 9-10 relief valve circuit.
①Remove the plug in the delivery pipe on
the right-hand side of the transmission
case and install a compression gauge to
measure the pressure.
Keep the engine speed at 2700 rpm and
shift the position control lever at the
highest position.
②Control valve coupler.
③Remove the plug in the hyd. pump flange
and engage the pressure gauge and
measure it.
Measurement the Pressure must be done 3
times and should be set within specified
pressure.
Specified relief pressure
145 ±5 ㎏f·㎠
9-9

TYM T233 HST Specifications

General

Brand	TYM
Model	T233 HST
Category	Tractor
Language	English