Kubota M108S Workshop Manual page 202

M108S, WSM
PTO System Pressure
1. Start the engine and warm up the transmission fluid, and then
stop the engine.
2. Remove the plug (4) (PT 1/8) on the PTO valve spool (5).
3. Set the adaptor (PT 1/8) (Use the oil pressure tester for diesel
engines, Code No. 07916-32032), threaded joint (3), cable (2)
and pressure gauge (1).
4. Start the engine and set the engine speed maximum.
5. Move the PTO clutch lever to the "ON" position, and measure
the pressure.
6. If only the pressure in the PTO clutch engaged position is low,
check the hydraulic PTO clutch system.
7. If the measurement is not within the factory specifications, loosen
the lock nut (7) and turn the screw (6) on the regulator valve (8)
to adjust.
IMPORTANT
• Do not connect the universal joint of the implement to the
tractor PTO shaft while testing.
NOTE
• The supply oil to a shuttle clutch, a PTO clutch, and a swing
shift has distributed the oil from regulator valve. Check
each system, when fault occurs using same time with other
systems.
PTO pressure (When
PTO clutch lever is Factory spec.
"Engaged" position)
PTO pressure (When
PTO clutch lever is Factory spec.
"Disengaged" position)
Condition
• Engine speed ......... Maximum
• Oil temperature ...... 45 to 55 °C
113 to 131 °F
(Reference)
• Turn the screw (6) to clockwise direction → Pressure increase
• Turn the screw (6) to counterclockwise direction → Pressure
decrease
(1) Pressure Gauge
(2) Cable
(3) Threaded Joint
(4) Plug (PT 1/8)
(5) Spool
(6) Adjusting Screw
2-S7
CLUTCH
1.97 to 2.10 MPa
20.0 to 21.5 kgf/cm
285 to 305 psi
No pressure
(7) Lock Nut
(8) Regulator Valve
(9) Valve Case
(10) Spring
(11) Relief Valve
W1021205
KiSC issued 06, 2007 A
2