Kubota WSM STa-30, Workshop Manual, Page: 252 / 359

7-S13
ST
α
-30 · ST
α
-35, WSM BI-SPEED TURN
(2) Sensors, Controller Unit and Solenoid Valve
Travelling Speed Sensor
1. Disconnect the connector (1).
2. Jack up the rear wheels and shift the front wheel drive lever to
OFF position.
3. Start the engine and turn the rear wheel as follow condition.
- Range shift lever : 1
- Cruise control lever : 1
- Engine speed : around 1000 rpm
4. Measure the travelling speed sensor voltage on the connector’s
terminal of wire harness side (Gray / Red (3) – Gray / Black (2))
CAUTION
• Be sure to disengage the front wheel drive, when checking
the travelling sensor with rotate the rear wheel.
NOTE
■
• The analog type tester may not check for voltage.
• There is no need to “Fine adjustment” about travelling
speed sensor if replaced.
• Be sure to check the alternate voltage range.
W1013027
Bi-speed Solenoid Valve
[Solenoid]
1. Disconnect the connector (1).
2. Measure the bi-speed solenoid valve resistance between ground
terminal (2) and solenoid valve terminal (Green / White) (3).
If the measurement is not within the factory specifications,
replace it.
W1013314
Output alternate voltage
of travelling speed
sensor
Factory
spec. GY/R (3) –
GY/W (2)
Approx. AC 1.0 V
(1) Connector
(2) GY/B Wire Terminal (3) GY/R Wire Terminal
(4) Connector (Wire Harness)
Resistance between bi-
speed solenoid valve
and ground
Factory
spec. B (3) –
G/W (2)
11 to 15
Ω
(1) Connector
(2) Black Terminal (Ground) (3) G/W Terminal
(4) Connector (Wire Harness)
KiSC issued 11, 2006 A