TRANSMISSION
L3560, L4060, L4760, L5060, L5460, L6060, WSM
3-S20
4. CHECKING AND ADJUSTING
[1] PTO CLUTCH
PTO Clutch Operating Pressure
• Do not connect the universal joint of the implement to the
tractor PTO shaft while testing.
• Set the main shift lever, shuttle lever and HST pedal in
Neutral position.
• Set the parking brake lever in parking position.
1. Remove the valve cover (1).
2. Remove the plug (PT 1/8) (2) on the PTO solenoid valve (3).
3. Set the pressure gauge.
4. Start the engine and set the engine speed to maximum.
5. Turn on the PTO switch (4) and measure the oil pressure.
6. If only the pressure in PTO clutch engaged position is low,
check the hydraulic PTO clutch system.
7. If the measurement is not within the factory specifications,
measure the system pressure, and adjust the system pressure
with regulator valve (5) if necessary.
Condition
• Engine speed
Maximum
• Oil temperature
40 to 60 °C (104 to 140 °F)
(Reference)
• Turn to clockwise direction → Pressure is increased
• Turn to counterclockwise direction → Pressure is decreased
9Y1210824TRS0177US0
PTO operating
pressure
When PTO shift
lever is
"ENGAGED"
position
Manual
transmission and
GST
2.30 to 2.50 MPa
23.5 to 25.4 kgf/cm
2
334 to 362 psi
HST
2.50 to 2.85 MPa
25.5 to 29.0 kgf/cm
2
363 to 413 psi
When PTO shift lever is
"DISENGAGED" position
No pressure
(1) Valve Cover
(2) Plug (PT 1/8)
(3) PTO Solenoid Valve
(4) PTO Switch
(5) Regulating Valve Assembly
(6) Pressure Reducing Valve Adjustor
[A] Manual Transmission and GST
[B] HST
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