Installation 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.
Problem
Probable
Cause
No
panel
indications;
fuel
solenoid
1.
Battery
switch
not
on.
or
fuel
pump
is
not
working
(key
switch
is
on
and
PREHEAT
button
is
depressed).
2.
20-amp
circuit
breaker
tripped.
3.
10-amp
breaker
tripped
on
preheat
solenoid
4.
Loose
battery
connections.
5.
Preheat
solenoid
not
operating.
START
button
is
depressed,
no
starter
1.
Connection
to
solenoid
faulty.
engagement.
2.
Gear
shift
not
in
neutral.
3.
Faulty
switch.
4.
Faulty
solenoid.
5.
Loose
battery
connections.
6.
Low
battery.
Engine
cranks,
but
does
not
1.
Faulty
fueling
system.
start.
2.
Preheat
solenoid
faulty.
3.
Low
battery
power.
Engine
can't
be
stopped.
1.
Disconnect
fuel
shut-off
cable.
off
the
fuel
Battery
runs
down.
1.
Oil
pressure
switch.
2.
High
resistance
leak
to
ground.
3.
Low
resistance
leak.
4.
Poor
battery
connections.
5.
DC
alternator
not
charging
(tachometer
not
operating).
Battery
not
charging
1.
Alternator
drive.
Engine
slows
and·
stops.
1.
Fuel
starvation.
2.
20
Amp
circuit
breaker
tripping.
3.
Exhaust
system
is
restricted.
4.
Water
in
fuel.
5.
Air
intake
obstruction.
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.
VerificationJRemedy
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
-
wait
for
it
to
cool
then
res~t.
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
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
that
fuel
valves
are
open.
1a.
Check
for
air
in
fuel
system.
Bleed
air
from
fuel
system.
1
b.
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.
Check
connection
at
shut-off
lever.
Pull
lever
back
to
close
1.
Observe
if
gauges
and
panel
lights
are
activated
when
engine
is
not
running.
Test
the
oil
pressure
switch.
2.
Check
wiring.
Insert
sensitive
(0
-
.25
amp)
meter
in
battery
lines.
(Do
not
start
engine.)
Remove
connections
and
replace
after
short
is
located.
3.
Check
all
wires
for
temperature
rise
to
locate
the
fault.
4.
Check
cable
connections
at
battery
for
loose
connections,
corrosion
5.
Check
connections,
check
belt
tension,
test
alternator.
See
DC
ELECTRICAL
SYSTEM/ALTERNATOR.
1.
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.
1.
Check
fuel
supply,
fuel
valves,
fuel
lift
pump.
2.
Check
for
high
DC
amperage
draw
during
operation.
Ensure
breaker
is
not
overly
sensitive
to
heat
which
would
cause
tripping.
Push
button
to
reset.
3.
Check
for
blockage,
collapsed
hose,
carbon
buildup
at
exhaust
elbow.
4.
Pump
water
from
fuel
tank(s);
change
filters
and
bleed
fuel
system.
5.
Check
air
intake
filter
cartridge.
(continued)
Engines & Generators
29