Baroness LM315GC, Service Manual

Page: 96 / 199

2WD/3WD Changeover Valve
The 2WD/3WD changeover valve is located in
the center of the right side of the body.
It controls the drive wheels. The hydraulic
circuit in the 2WD/3WD changeover valve is
switched according to the activation of the
solenoid valves.
bbc6ua-001
1
2WD/3WD Changeover Valve_001
1 Solenoid valve
Inspection of Solenoid
Disconnect the solenoid connectors.
The normal resistance between the
connector terminals of the solenoid is
about 7.1
Ω .
Solenoid Specifications
Voltage Resistance
Holding
Current
DC 12 V 7.1 Ω 1.7 A
Mower Unit Control Relay Unit
The motor unit control relay unit controls Up/
Down of the mower unit and Rotate/Stop of the
reel cutter (cutting cylinder) by the signals from
the proximity sensors of reel rotation start
position detection and mower up/down position
detection.
The operating condition can be confirmed by
checking the illumination of the LEDs.
Three relay circuits are used inside.
￭
1.
2.
￭
Inspection of Mower Unit Control Relay Unit
Remove the mounting bolts of the mower
unit control relay unit.
Start the engine.
Raise and lower the mower units to confirm
whether each LED of the mower unit control
relay unit is turned on.
If any LED cannot be turned on, follow the
following steps to inspect it.
If the LED of (1) is not turned on, inspect
the proximity sensor (reel rotation start
position detection) and its peripheral
circuit. (Refer to " "Adjustment of Reel
Rotation Start Position" (Page 5-12) "
and " "Proximity Sensor" (Page 5-21) ")
If the LED of (2) is not turned on, inspect
the proximity sensor (mower up position
detection) and its peripheral circuit.
(Refer to " "Adjustment of Up/Down
Position" (Page 5-12) " and " "Proximity
Sensor" (Page 5-21) ")
If the LED of (3) is not turned on, inspect
the proximity sensor (mower down
position detection) and its peripheral
circuit. (Refer to " "Adjustment of Up/
Down Position" (Page 5-12) " and "
"Proximity Sensor" (Page 5-21) ")
1pupwg-001
3
2 1
Inspection of Mower Unit Control Relay Unit_001
1.
2.
3.
[1]
[2]
[3]
LM315GC
Electrical system
Page 5-24 Electrical components