Troubleshooting - Raytheon BEECH BARON 58P Maintenance Manual

BEECHCRAFT
BARON 585
MAINTENANCE MANUAL
TROUBLESHOOTING
ALTERNATOR SYSTEM
TROUBLE
PROBA B L E CA USE
REMA RKS
i. No alternator output
or a.
Open circuit.
a.
Check continuity
low
charge
is indicated
of the circuit.
b.
Circuit
breaker
b. Check for short circuit
tripped.
and
reset
circuit breaker.
c.
Loose
or
improper
c.
Check
wiring diagram
connections.
for
proper
connections
and tighten all
con-
nections.
d. Open
or
shorted
d. Test resistance of the
field circuit in
field. Check field
alternator; defective
circuit connections;
rotor, replace
alternator if
necessary.
e.
Brushes
not contact-
e.
Clean brushes and holders
ing slip-rings.
with
a
lint´•free, dry
cloth, replace weak
springs.
f.
Worn
or
broken f. Check brushes and
brushes.
replace if
necessary.
g.
Open
current
limiter
g.
Check for shorted alter-
in output line,
nator.
(Alternator
out-
put will
not
normally
be sufficient
to
burn
out
the
current
limiter.)
h. Engine
speed
too
h. Increase engine
rpm.
low.
i.
Defective voltage i. Replace voltage
regulator.
regulator.
j. Defective loadmeter.
j. Replace loadmeter.
2. Noisy alternator.
a.
Worn bearing.
a.
Replace bearing.
b.
Shorted rectifier
b. Replace rectifier.
(magnetic
noise).
c.
Bent
or
broken fan.
c.
Replace fan.
d. Loose
rear
housing
or
d.
Tighten
rear
housing
improperly installed
or
check
stater
for
stater.
proper
installation.
24-30-00
Page 101
Apr 1/75