11-073
TROUBLESHOOTING
2-5-1. Machine and engine suddenly stops 5/11
Parking brake switch must be released.
Foot brake switch must be ON (Brake pedal is not depressed).
Check whether exact meter multiple display shows any error code.
1) when display shows any error code
Reference Fig.: 2-5-1
Error code
Check point
Check/Cause
Action
E31 or E32 1. Connector
Check propulsion pump proportional solenoid connector
and traveling controller connector terminal 40, 50, working
controller (C2) connector terminal 7, 8 for corrosion,
breakage, bending and looseness.
If any abnormality is found, connector is faulty.
•
•
Replace connector
or terminal.
2. Harness
Measure resistances between propulsion pump
proportional solenoid and traveling controller terminal
wires.
Propulsion pump proportional solenoid b wire G and
traveling controller terminal 40 wire G
Propulsion pump proportional solenoid a wire L and
traveling controller terminal 50 wire L
Propulsion pump proportional solenoid a, b wire B and
working controller (C2) terminal 7 and 8 wires B
Standard resistance : 10 Ω or less
If resistance is abnormal, harness is faulty.
Disconnect connectors and check continuity between
propulsion pump proportional solenoid terminal wires.
Terminal wire No.120 wire G and terminal wire No.121
wire B
Terminal wire No.122 wire L and terminal wire No.123
wire B
If there is continuity, harness is faulty.
•
•
•
•
•
•
•
•
•
Replace harness.
3. Propulsion
Pump
Proportional
Solenoid a (R)
or b (F)
Disconnect harness and measure resistance of coils.
Standard resistance: 5.5 Ω
If resistance is abnormal, propulsion pump proportional
solenoid a (R) or b (F) is faulty.
•
•
Replace propulsion
pump proportional
solenoid.
•
•
•
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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