11-175
TROUBLESHOOTING
2-8-1. Continuous water spray does not operate 3/4
Water spray mode select switch must be “ ”.
Water spray timer switch must be “
”.
Set water spray pump switch to simultaneous spray.
Reference Fig. : 2-8-1
Check point
Check/Cause
Action
7. water Spray Pump
Switch (F)
(1) when starter switch is ON and depress F-R lever water
spray switch once, measure voltage between water
spray pump switch (F) terminal 2 inlet wire w, terminal
5 inlet wire Y and chassis ground.
Standard voltage : 12 V
(2) when starter switch is ON and depress F-R lever water
spray switch once, measure voltage between water
spray pump switch (F) terminal wires and chassis
ground.
Center position (both pumps)
water spray pump switch (F) terminal 3 outlet wire G
and chassis ground
water spray pump switch (F) terminal 4 outlet wire RG
and chassis ground
Standard voltage : 12 V
If above item (1) is OK and item (2) is NG, water spray
pump switch (F) is faulty.
•
•
Replace water spray
pump switch (F).
8. water Spray Pump
Switch (R)
(1) when starter switch is ON and depress F-R lever water
spray switch once, measure voltage between water
spray pump switch (R) terminal 2 inlet wire w, terminal
5 inlet wire Y and chassis ground.
Standard voltage : 12 V
(2) when starter switch is ON and depress F-R lever water
spray switch once, measure voltage between water
spray pump switch (R) terminal wires and chassis
ground.
Center position (both pumps)
water spray pump switch (R) terminal 3 outlet wire L
and chassis ground
water spray pump switch (R) terminal 4 outlet wire LR
and chassis ground
Standard voltage : 12 V
If above item (1) is OK and item (2) is NG, water spray
pump switch (R) is faulty.
•
•
Replace water spray
pump switch (R).
9. water Spray Pump
Relay (F, 2)
(1) when starter switch is ON and depress F-R lever water
spray switch once, measure voltage between water
spray pump (F, 2) relay terminal 4 inlet wire RG and
chassis ground.
Standard voltage : 12 V or more
(2) when starter switch is ON and depress F-R lever water
spray switch once, measure voltage between water
spray pump (F, 2) relay terminal 3 outlet wire Gw and
chassis ground.
Standard voltage : 12 V or more
If above item (1) is OK and item (2) is NG, water spray
pump relay (F, 2) relay is faulty.
•
Replace water spray
pump relay (F, 2).
•
•
•
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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