TROUBLESHOOTING THE CONTROL
(Continued)
*
Many troubleshooting procedures present hazards which can result in severe personal injury or
IBWAR"G/
death. Only qualified service personnel with knowledge
of
fuels, electricity, and machinery hazards
should perform service procedures. Review safely precautions on inside cover page.
TROUBLE
Engine Cranks
But Does Not
Start
Engine Starts
But Stops When
Switch is
Released
POSSIBLE
CAUSE
1.
Faulty ignition due to worn
or
fouled
spark plug or faulty plug wire.
Faulty magneto or ignition coil.
2.
Control fuse F2 is open.
3.
Faulty CR1 diode, (open).
4.
Faulty fuel system due to sticking
choke, faulty fuel pump
-
gasoline
sets (faulty priming solenoid, fuel
solenoid, or regulator
-
LPG sets) or
carburetor mixture screws incorrectly
adjusted.
due to:
a. low oil level
b. faulty low oil level switch
5.
Low oil level switch (S2) is not open
6.*Defective K5 relay contacts
7.*K3 relay not energizing due to:
a. open circuit to K3 relay coil
b.
faulty
K3
relay.
8.
Governor linkage or
*K4
solenoid
stuck or binding.
*Gasoline sets only
1.
Output voltage from generator not
being supplied to control due to:
a. open circuit in wiring between
b.
no output voltage from generator
generator and control
2.
Start disconnect relay K2 not
energizing due to:
a. open circuit to
K2
relay coil
b. faulty K2 relay
3.*Fuel pump not energized due to
faulty ballast resistor R2 (if used).
4.
Corroded slip rings.
5.
Defective voltage regulator.
"Gasoline sets only
CORRECTIVE ACTION
1.
Refer
to
Ignition System section for
test and service procedures.
2.
Locate cause
of
overload and correct as
required. Replace fuse.
3. Test
CRl
diode and replace if
defective.
4.
Refer to Fuel System section for test
and service procedures.
5a. Check oil level and add oil
if
low.
5b. Replace oil level switch.
6.
Check normally-closed contacts
K5-30/ K5-87A, replace relay if defective.
7a. Check for continuity and correct
if
circuit is open.
7b. Check
K3
relay coil
(85
f5
ohms) and
contacts, replace
if
defective.
8.
Check for free movement of governor
arm and solenoid. Repair as necessary.
la. Check for continuity and correct
if
circuit is open.
1
b.
Refer to Generator section for test
and service procedures.
2a. Check for continuity and correct
if
circuit
is
open
2b.
Test K2 relay and replace
if
defective.
3. Check resistance of ballast resistor
R2 for approximately 1.2 ohms and
replace
if
defective. (R2
is
not used in
later production sets.)
4.
Refer to
Generator
section for
slip ring service.
5.
Refer to
Generator
section for voltage
regulator test.
7-7
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