Operation And Inspection Of The Emergency Relay - Yamaha EDL13000SDE Owner's Manual

OPERATION AND INSPECTION OF THE EMERGENCY RELAY

This is an automatic engine stopping device in case of
abnormal oil pressure or water temperature.
This device senses any abnormal oil pressure or
water temperature occurring during engine
operation, and activates the stop solenoid to cut off
fuel to the fuel injection pump and stop the engine.
This relay has two independent timer functions, a
start relay and a stop relay.
The start relay does not activate this relay for a
specified time period after the engine has started. The
stop relay maintains conditions for a specified time
period after activating this relay and the stop
solenoid.
IMPORTANT:
¡ When this device stops the engine, it may be that
some minor damage to the engine has occurred.
To limit engine damage as much as possible,
please do not make the faulty assumption that it is
a perfectly safe device. Check unit prior to re-
starting.
Alarms and Corrective Measures
If a trouble occurs during operation, a corresponding indicator lamp lights up and the engine stops. Determine at
which lamp is ON, and pinpoint and correct the cause of trouble.
Light-up
Lamp (1)
Lamp (2)
Lamp (3)
OPERATION AND INSPECTION OF THE EMERGENCY RELAY
Possible Causes
Engine overheating.
Water temperature sensor faulty.
Water temperature sensor wiring faulty.
Insufficient engine oil.
Lubricating system in trouble.
Oil pressure sensor faulty.
Oil pressure sensor wiring faulty.
Fan belt loose or damaged.
Alternator terminal in poor contact.
Alternator problem.
(1) Water temperature lamp
Lights up if the engine is overheating.
(2) Oil pressure lamp
Lights up if engine oil pressure is too low.
(3) Battery charge lamp
Lights up if there is a battery problem or if the belt
is broken.
Countermeasures
*See "PRECAUTION OVERHEATING" in
"OPERATION" section. (See page 15)
*Replace the water temperature sensor.
*Repair the wiring.
*Add engine oil.
*Check the system.
*Replace the sensor.
*Repair the wiring.
*Readjust belt tension or replace the belt.
*Connect tightly.
*Check the alternator.
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