3 - 7 2 . E n g i n e C r a n k s B u t W i l l N o t S t a r t o r S t a r t s
a n d R u n s E r r a t i c a l l y o r M i s f i r e s .
( C o n t )
Trouble
Clogged air filter.
Defective fuel selector
valve,
3 - 7 3 .
Expedient Remedy
If repaired fuel line leaks,
shut down engine.
Shut down engine and re-
move filter element ( f i g .
3 - 5 ) . Use compressed air,
if available, or shake vigor
ously, to clear obstruction.
Reassemble and continue
operation until replacement
parts are obtained.
Shut down engine and dis -
connect fuel selector valve
( p a r a
3 - 1 6 6 ) . Connect
hose assembly ( 2 1 , f i g .
3 - 2 8 ) directly to hose as-
sembly (24). Use hose
assembly (15) connection
and plastic electricians
tape as necessary to comp-
lete connection. Keep moni-
toring reconnected fuel line
while engine is operating
until a replacement fuel
selector valve is obtained.
If reconnected fuel line leaks,
shut down engine.
E n g i n e S h u t s D o w n and
L O W
O I L
P R E S S U R E
I n d i c a t o r
L i g h t s .
Trouble
Expedient Remedy
Defective oil line.
Tightly wrap area of oil line
leak with plastic electricians
Trouble
3 - 7 4 .
B a t t e r y
C h a r g i n g
Trouble
Battery charging alter-
nator defective.
Expedient Remedy
tape. Keep monitoring re-
paired line while engine is
operating and a replacement
oil line is obtained.
A m m e t e r
S h o w s
N o
C h a r g e .
Expedient Remedy
Continue engine operation
with defective battery charg -
ing alternator installed until
replacement is obtained or
until engine can be shut down
for battery charging alter-
nator service or repair.
3 - 7 5 . L o s s o f F r e q u e n c y C o n t r o l ( C l a s s 1 S e t s O n l y ) .
Trouble
Expedient Remedy
Governor system fails
Shut down the engine genera-
to operate properly.
tor set and disconnect plugs
J17 and J21 on the electrical
governor control ( f i g . l - l ) .
Remove cover ( 1 2 , f i g . 3 - 1 7 ) .
Loosen screw (13) and move
fuel pump lever all the way
forward and tighten screw,
Move actuator linkage to the
retracted position. Operate
set as class 2 unit until fault
in governor system can be
corrected.
NOTE
If actuator linkage does not re-
main in retracted position dis -
connect actuator linkage and
wire arm ( 3 , f i g , 3 - 3 2 ) in the
down position ( f i g . 3 - 1 0 ) .
S e c t i o n
V I I .
R A D I O
I N T E R F E R E N C E
S U P P R E S S I O N
3 - 7 6 .
G e n e r a l
M e t h o d s
U s e d
t o
A t t a i n
P r o p e r
S u p p r e s s i o n .
Essentially, suppression is attained by providing a
low resistance path to ground for the stray currents.
The methods used include shielding high frequency
wires, grounding the frame with bonding straps,
and using capacitors,
inductors and resistors.
3 - 7 7 . I n t e r f e r e n c e S u p p r e s s i o n C o m p o n e n t s .
a.
Primary
Suppression
Components.
The
pri%ary suppression components are those whose
function is to suppress radio interference. The
exciter regulator contains an Electromagnetic
Interference (EMI) suppression assembly to suppress
EMI from this assembly. The fuel pumps, main ac
contactor, day tank solenoid valve, battery charg -
ing alternator and load bank (if installed) contain
primary suppression components.
3 - 2 8
b.
Secondary Suppression Components. These
components have radio interference suppression
functions which are incidental or secondary to their
primary function. No secondarv suppression compo-
nents are included on this generator set,
3 - 7 8 .
R e p l a c e m e n t
o f
S u p p r e s s i o n
C o m p o n e n t s .
a.
Fuel Pumps.
Replace fuel pumps with integral
rad<o interference suppression components as des -
cribed in p a r a g r a p h 3 - 1 6 5 .
b.
Battery Charging Alternator. Replace the
alternator with integral RFI suppression diodes as
described in
p a r a g r a p h
3 - 1 8 4 .
c. Load Bank. RFI suppression capacitors C301
thr~ugh C306 ( f i g . 4 - 1 4 ) are replaced in the Load
Bank as described in
p a r a g r a p h
4 - 3 8 .