Engine Troubleshooting - Westerbeke 44A FOUR-35 C THREE Operator's Manual

ENGINE TROUBLESHOOTING
The following troubleshooting table describes certain problems
relating to engine service, the probable causes of these prob-
lems, and the recommendations to overcome these problems.
NOTE: The engine
s
electrical system is protected by a 20
ampere manual reset circuit breaker located on a bracket at
the back of the engine. The preheat solenoid is mounted on
the same bracket.
Problem
No panel indications; fuel solenoid 1.
or fuel pump is not working (key switch
is on and PREHEAT button is depressed).
2.
3.
4.
5.
START button is depressed, no starter 1.
engagement.
2.
3.
4.
5.
6.
START button is depressed; panel 1.
indications OK; starter solenoid OK;
fuel solenoid not functioning. 2.
Engine cranks, but does not
1.
start, fuel solenoid energized.
2.
3.
Engine can't be stopped.
1.
2.
3.
Battery runs down.
1.
2.
3.
4.
5.
Battery not charging
1.
2.
Probable Cause
Battery switch not on.
20-amp circuit breaker tripped.
10-amp breaker tripped on
preheat solenoid
Loose battery connections.
Preheat solenoid not operating.
Connection to solenoid faulty.
Gear shift not in neutral.
Faulty switch.
Faulty solenoid.
Loose battery connections.
Low battery.
Poor connections to fuel solenoid.
Defective fuel solenoid.
Faulty fueling system.
Preheat solenoid faulty.
Low battery power.
Faulty DC altemator.
Disconnect fuel shut-off cable.
Fuel run solenoid will not de-energize.
Oil pressu re switch.
High resistance leak to ground.
Low resistance leak.
Poor battery connections.
DC altemator not charging
(tachometer not operating).
DC charge circuit faulty.
Alternator drive.
Verification}Remedy
1. Check switch and/or battery connections.
2. Reset breaker, if breaker trips again, check preheat solenoid
circuit and check circuit for shorts to ground.
3. Check the voltage both at and after the breaker on the
preheat solenoid.
4. Check (+) connection to starter solenoid and (-) connection to
engine ground stud. Check battery cable connections.
5. Check solenoid "S" terminal for voltage.
1. Check connection.
2. Gear shift must be in neutral (see NEUTRAL SWITCH under
HURTH HSW TRANSMISSIONS).
3. Check switch with ohmmeter.
4. Check that 12 volts are present at the solenoid connection.
5. Check battery connections.
6. Check battery charge state.
1. Check connections.
2. Check that 12 volts are present at the (+) connection on the
fuel run solenoid.
1. Check that fuel valves are open.
1 a. Check for air in fuel system. Bleed air from fuel system.
1b. Fuel filters clogged. Replace filters and bleed air from
fuel system.
2. Check solenoid.
3. Switch to combine house and start batteries.
3a. Replace batteries.
1.
2.
3.
1.
2.
3.
4.
5.
1.
2.
Remove Exc. connection at alternator; repair alternator.
Check connection at shut-off lever. Pull lever back to close
off the fuel.
Manually disconnect the 12 volt connection to the fuel run
solenoid at the injection pump.
Observe if gauges and panel lights are activated when engine
is not running. Test the oil pressure switch.
Check wiring. Insert sensitive (0 - .25 amp) meter in battery
lines. (Do not start engine.) Remove connections and replace
after short is located.
Check all wires for temperature rise to locate the fault.
Check cable connections at battery for loose connections,
corrosion
Check connections, check belt tension, test alternator. See
DC ELECTRICAL SYSTEM/ALTERNATOR.
Perform DC voltage check of generator charging circuit. See
Testing the Battery Charging Circuit.
Check drive belt tension; alternator should turn freely. Check
for loose connections. Check output with voltmeter. Ensure 12
volts are present at the Exc. terminal.
(continued)
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&
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