9-055
TROUBLESHOOTING
2-7-3. Tachometer reading is abnormal
Reference Fig. : 2-7-1
Check point
Check/Cause
Action
1. Tachometer Sensor
Start engine and fix engine speed at 1,000 rpm. Measure
pulse between tachometer sensor terminal outlet wire BrR
and ground terminal wire LgY.
Standard pulse : 126,023/min.
If measured pulse is abnormal, tachometer sensor is
faulty.
•
•
Replace tachometer
sensor.
2. Control Box
Start engine and fix engine speed at 1,000 rpm. Measure
pulse between control box terminal outlet wire YG and
ground terminal wire B.
Standard pulse : 2,000/min.
If measured pulse is abnormal, control box is faulty.
•
•
Replace control box.
3. Combination Meter
(Tachometer)
When starter switch is ON, measure voltage between
combination meter battery terminal inlet wire No. 35 YW
and ground terminal wire B.
Standard voltage : 12 V or more
If above item is OK and no abnormality found in
tachometer sensor or control box, combination meter is
faulty.
•
•
Replace combination
meter.
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.
2-7-4. Hour meter is abnormal
Reference Fig. : 2-7-1
Check point
Check/Cause
Action
1. Combination Meter
(Hour meter)
When starter switch is ON, measure voltage between
combination meter hour meter terminal inlet wire No. 35
YW and ground terminal wire B.
Standard voltage : 12 V or more
If no abnormality is found, combination meter is faulty.
•
•
Replace combination
meter.
2. 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 SV510-III
Page 1: ...SV510 SHOP MANUAL 3498 6412A 0 ...
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Page 11: ...SAFETY ...
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Page 21: ...SPECIFICATIONS ...
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Page 35: ...ENGINE AND CONTROLS ...
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Page 45: ...HYDRAULIC SYSTEMS ...
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Page 77: ...ELECTRICAL SYSTEM ...
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Page 87: ...VIBRATORY DRUM REAR AXLE ...
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Page 139: ...BRAKE ...
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Page 147: ...INSPECTION AND ADJUSTMENT ...
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Page 171: ...TROUBLESHOOTING ...
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