ELECTRICAL SYSTEM
L3560, L4060, L4760, L5060, L5460, L6060, WSM
9-M27
Proportional Valve : For HST
The proportional valves (1), (2) are located on the
right of the HST.
There are two proportional valves; one for forward
motion and the other for the reverse motion.
The proportional valve is controlled by signals from
the ECU and feeds oil sent from the regulating valve to
the servo piston.
9Y1210824ELM0045US0
Emergency Connector: For GST
This is a device which compulsorily operates the shift
solenoid when the tractor does not move due to the
trouble of the GST system and moves the tractor.
(Situation for necessity of emergency connector)
• GST lever sensor is damaged.
• There is no signal between main ECU and
proportional reducing valve. (Proportional reducing
valve is OK.)
(Use of emergency connector)
1. Stop the engine.
2. Remove the each cap from connectors (1), (2).
3. Connect the connector A and B (1), (2).
4. Start the engine and move the tractor.
• When connecting the emergency connectors,
the GST valve is set at 1st speed position even if
the GST lever is at any position. And the stop and
the start of the tractor is operated by shuttle
lever.
• Be sure to connect the main ECU connectors (3)
when using the emergency connectors.
9Y1210824ELM0046US0
(1) Reverse Proportional Valve (2) Forward Proportional Valve
(1) Emergency Connector A
(2) Emergency Connector B
(3) ECU Connector
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