11-127
TROUBLESHOOTING
2-5-8. Emergency exit propulsion switch does not work
Disconnect SwP-6F PRO (P.5-006) connector from engine harness side and connect emergency switch
connector SwP-6F EME (P.5-006).
Reference Fig.: 2-5-1
Check point
Check/Cause
Action
1. Propulsion Pump
Proportional Solenoid a
(R) or b (F)
Disconnect harness for propulsion pump proportional
solenoid a (R) or b (F) and measure resistance of coils.
Standard voltage : 5.5 Ω
If measured resistance is abnormal, propulsion pump
proportional solenoid a (R) or b (F) is faulty.
•
•
Replace propulsion pump
proportional solenoid.
2. Emergency Switch
(1) when starter switch is ON, measure voltage between
emergency switch terminal 2 inlet wire WY and chassis
ground.
Standard voltage : 12 V or more
(2) when starter switch is ON and emergency switch is “F”,
measure voltage between emergency switch terminal 1
outlet wire WR and chassis ground.
Standard voltage : 12 V or more
(3) when starter switch is ON and emergency switch is “R”,
measure voltage between emergency switch terminal 3
outlet wire WL and chassis ground.
Standard voltage : 12 V or more
If above item (1) is OK and item (2) or (3) is NG,
emergency switch is faulty.
•
Replace emergency
switch.
3. Resistor Unit
Measure resistance between resistor unit terminal wire
WB and terminal wire WY.
Standard resistance : 15 Ω
If resistance is abnormal, resistor unit is faulty.
•
•
Replace resistor unit.
4. Harness Connecting
Between Terminals
Measure resistance of harness connecting between
terminals.
Standard resistance : 10 Ω or less
If resistance is abnormal, harness is faulty.
•
•
Repair or replace
harness.
•
Summary of Contents for SW880-1
Page 1: ...SW880 1 990 1 SHOP MANUAL 3498 6568A 0 ...
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Page 15: ...SAFETY ...
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Page 25: ...SPECIFICATIONS ...
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Page 39: ...ENGINE AND CONTROLS ...
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Page 47: ...HYDRAULIC SYSTEMS ...
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Page 83: ...ELECTRICAL SYSTEM ...
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Page 125: ...VIBRATORY DRUM ...
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Page 171: ...BRAKE ...
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Page 175: ...OPERATOR STATION ...
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Page 179: ...WATER SPRAY SYSTEM ...
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Page 183: ...INSPECTION AND ADJUSTMENT ...
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Page 209: ...TROUBLESHOOTING ...
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