Sakai SW880-1, Shop Manual

Page: 387 / 428

11-177
TROUBLESHOOTING
2-8-1. Continuous water spray does not operate 4/4
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
10. water Spray Pump
Relay (R, 2)
(1) when starter switch is ON and depress F-R lever water
spray switch once, measure voltage between water
spray pump relay (R, 2) terminal 4 inlet wire LR 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 relay (R, 2) terminal 3 outlet wire Lw and
chassis ground.
Standard voltage : 12 V or more
If above item (1) is OK and item (2) is NG, water spray
pump relay (R, 2) is faulty.
•
Replace water spray
pump relay (R, 2).
11. Traveling/Working
Controller
(1) when starter switch is ON, measure voltage between
traveling/working controller terminal wires and ground
terminal wires.
Traveling controller power supply terminal 2 inlet wire
WB and ground terminal 1 outlet wire B.
working controller (C1) power supply terminal 2 inlet
wire WB and ground terminal 1 outlet wire B.
working controller (C2) power supply terminal 11, 12
inlet wires wB and working controller (C1) ground
terminal 1 outlet wire B.
Standard voltage : 12 V or more
(2) when the starter switch is ON and depress F-R lever
water spray switch once, measure voltage between
traveling controller terminal 22 inlet wire GR and
chassis ground.
Standard voltage : 12 V
(3) when starter switch is ON and depress F-R lever water
spray switch once, measure voltage between working
controller (C2) terminal 10 outlet wire Gw and chassis
ground.
Standard voltage : 12 V
If above items (1) and (2) are OK and item (3) is NG,
traveling controller is faulty.
•
•
•
•
Replace traveling/
working controller.
12. 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.
•
•
•