Control Panel Troubleshooting - Westerbeke 8.0KW - 60Hz Operator's Manual

CONTROL PANEL TROUBLESHOOTING
MANUAL STARTER DISCONNECT (TOGGLE SWITCHES)
NOTE:
The engine control system is protected
by
a 20 amp manual reset circuit breaker
located on the engine as close as possible to the power source.
Problem Probable Cause Verification/Remedy
PREHEAT depressed, no panel indications 1. Oil Pressure switch. 1. Check switches and/or battery connections.
fuel solenoid, electric fuel pump and
preheat solenoid not energized. 2. 20 amp circuit breaker tripped.
2. Reset breaker. If opens again, check preheat solenoid circuit
and run circuit for shorts to ground.
START SWITCH DEPRESSED. no starter 1. Connection to solenoid faulty.
1.
Check connection.
engagement.
2. Faulty switch 2. Check switch with ohmmeter.
3. Faulty solenoid. 3. Check that 12 volts are present at the solenoid connection.
4. Loose battery connections.
4. Check battery connections.
5. Low battery. 5. Check battery charge state.
NO IGNITION. cranks. does not start. 1. Faulty fueling system.
1.
Check for fuel.
2. Check for air in the fuel system.
2. Allow system to bleed.
3. Faulty fuel lift pump. 3. Replace fuel lift pump.
NOT CHARGING BATTERY
1. Faulty alternator drive.
1. Check the drive belt and its tension. Be sure the alternator
turns freely. Check for loose connections. Check the
output with a voltmeter. Ensure 12V are present at the
regulator tenminal.
BATTERY RUNS DOWN
1.
Oil pressure SWitch. 1. Observe If the gauges and panel lights are activated when the
engine is not running. Test the oil pressure switch.
2. High resistance leak to grou nd. 2. Check the wiring. Insert sensitive (0-.25 amp) meter in battery
lines (Do NOT start engine). Remove connections and replace
after short is located.
3. Low resistance leak to ground. 3. Check all wires for temperature rise to locate the fault.
4. Faulty alternator. 4. After a good battery charging. disconnect alternator at output.
If leakage stops. Remove alternator and bench test. Repair or
replace.
TROUBLESHOOTING WATER TEMPERATURE AND OIL PRESSURE GAUGES
If the gauge reading is other than what is normally indicated
by the gauge when the instrument panel is energized, the first
step is to check for 12 volts DC between the ignition (B+)
and the Negative (B-) terminals of the gauge.
Assuming that there is 12 volts as required, leave the instru-
ment panel energized (key switch on) and perform the
following steps:
1. Disconnect the sender wire at the gauge and see if the
gauge reads zero, which is the normal reading for this situa-
tion.
2. Connect the sender terminal at the gauge to ground and
sec if the gauge reads full scale, which is the normal reading
for this situation.
If both of the above gauge tests are positive, the gauge is
undoubtedly OK and the problem lies either with the conduc-
tor from the sender to the gauge or with the sender.
If either of the above gauge tests are negative, the gauge is
probably defective and should be replaced.
Assuming the gauge is OK, check the conductor from the
sender to the sender terminal at the gauge for continuity.
Check that the efIgine block is connected to the ground.
Some starters have isolated ground terminals and if the bat-
tery
is connected to the starter (both plus and minus termi-
nals), the ground side
will
not necessarily be connected to the
block.
Engines & Generatots
32 .