Servicing - Kubota L4400 Workshop Manual

L4400 , WSM
6. CHECKING,
(HYDRAULIC PTO CLUTCH VALVE)
[1] CHECKING AND ADJUSTING
Tractor Manuals Scotland
DISASSEMBLING
Relief Valve Setting Pressure
1. Start the engine and warm up the transmission fluid, and then
stop the engine.
2. Remove the plug (1) (PT 1/8) on the PTO valve spool (2).
3. Set the pressure gauge.
4. Start the engine and measure the pressure.
5. For adjustment, use the reducing valve adjuster (3) of the
regulator valve (5).
IMPORTANT
• Do not connect the universal joint of the implement to the
tractor PTO shaft while testing.
Independent PTO
pressure
Condition
• Engine speed .......... Idling speed
• Oil temperature ....... 40 to 60 °C
(Reference)
• Turn to clockwise direction → Pressure is increased
• Turn to counterclockwise direction → Pressure is decreased
(1) Plug (PT 1/8)
(2) Spool
(3) Reducing Valve Adjuster
Tractor Manuals Scotland - Please Do Not Copy
2-S28
AND

SERVICING

2.25 to 2.45 MPa
When PTO shift lever is
23.0 to 25.0 kgf/cm
"ENGAGED" position
327 to 356 psi
When PTO shift lever is
No pressure
"DISENGAGED" position
104 to 140 °F
(4) Relief Valve Adjuster
(5) Regulator Valve
CLUTCH
2
KiSC issued 07, 2007 A