Cessna T182 Series User Manual

MODEL
182 & T182 SERIES
SERVICE MANUAL
16-41. TROUBLE SHOOTING
THE ALTERNATOR
SYSTEM (BEGINNING
WITH 1979
MODELS) (Cont.)
. b. ENGINE RUNNING (Cont.)
TROUBLE
PROBABLE CAUSE
REMEDY
ALTERNATOR
SYSTEM
Alternator
output voltage
2. Check
resistance
from
case
WILL
NOT KEEP
BAT-
insufficient,
of alternator
to airframe
ground.
TERY CHARGED.
(Cont.)
Normal
indication is very
low
resistance.
If reading
indicates
no,
or poor continuity,
repair or
replace
alternator
ground
wiring.
16-42.
REMOVAL
AND
INSTALLATION.
Alternator
Charging
Systems
Service/Parts
Manual.
(See figure
16-4. )
A Cessna
Alternator
Charging
System Test
Box
a. Make
sure the master
switch remains
in the off
Assembly
(P/N 9870000-1)
is available through
the
position
or disconnect
the
negative
lead from
the bat-
Cessna
Supply
Division
for use
in isolating
failures
tery.
in the
28-volt transistorized
voltage
regulator
b. Disconnect
and label
the
wiring
from
the alter-
(C611002-0105)
and 28-volt
Alternator.
nator.
c. Remove the safety
wire from the upper
adjust- 16-46.
REMOVAL AND INSTALLATION.
(See
ing bolt and remove the bolt from the alternator. figure 16-5.)
d. Remove the nut and
washer from the lower
a. Make
sure that the master switch
is off, or dis-
mounting
bolt.
connect the negative lead from
the battery.
e. Remove the
alternator drive belt and the lower
b. Remove the connector plug from the regulator.
mounting bolt to remove alternator. c. Remove two screws holding the regulator on the
f. To replace
alternator,
reverse this
procedure.
firewall.
g. On 60-amp alternator
adjust belt tension to ob- d. To replace
the regulator, reverse the procedure.
tain 3/8" deflection
at center of belt when
applying Be sure
that the connections
for grounding the alter-
12 pounds
of pressure. After belt is adjusted and
the nator, wiring shields and the base of
the regulator
bolt is safety
wired. tighten the bottom bolt to 100- are
clean and bright before assembly. Otherwise,
140 lb-in.
torque to remove any play between alter-
poor voltage regulation and/or excessive
radio noise
nator mounting foot and U-shaped support assembly. may result.
On
New aircraft
or whenever
a new
belt is installed,
belt
tension should be checked within 10 to 25
hours 16-47. ALTERNATOR CONTROL
UNIT.
of operation.
h. On 95 amp alternator or on initial installation
of 16-48. DESCRIPTION. The
alternator control unit
new belt adjust
belt tension to 75 Lb., thereafter belt is
a solid state voltage regulator with an over-voltage
tension should be 58 to 72 Lb. sensor and low-voltage sensor incorporated in the
unit. The control unit is not adjustable and is a re-
NOTE
move
and replace item. A Cessna Alternator
Charg-
ing
System Test
Box Assembly
(P/N
9870005) is
avail-
When tightening the alternator belt,
apply pry able through the Cessna
Supply Division for use in
bar pressure only to the end of the alternator isolating failures in the 28-volt alternator control
nearest
the pulley.
units (C611005-0101 and C611005-0102)
and the 28-
volt alternator.
16-43. ALTERNATOR
FIELD CIRCUIT
PROTEC-
tion. A manually resettable circuit breaker located 16-49. REMOVAL AND INSTALLATION. (See
on
the switch panel is provided to
protect the alter- figure
16-5.)
nator field circuit. a. Remove upper half of engine cowl.
b. Place master switch in the "OFF" position.
16-44. ALTERNATOR
VOLTAGE REGULATOR.
c. Disconnect negative lead from the battery
and
pull lead
free of the battery
box.
16-45. DESCRIPTION. Thru 1977 Models
the voltage d. Disconnect housing plug
from the alternator
regulator is semi-solid state. The mechanical relay control unit.
in the regulator
is actuated by the aircraft master
e. Remove screws securing the alternator control
switch
and connects
the regulator to
the battery. The
unit to the
firewall.
solid state portion
is voltage sensitive and controls
f. To install alternator control unit. reverse
the
the current applied
to the field windings of the alter- preceding
steps. Be sure the connections for ground-
nator. The regulator is a remove and replace item. ing are clean and bright before assembly. otherwise
adjustment on the aircraft
is not recommended. Be- faulty voltage
regulation and/or excessive radio noise
ginning with 1978 Models the regulator is transistor- may result.
ized. This regulator
is also adjustable.
but adjust-
ment
on the aircraft is not
recommended. A
bench
adjustment procedure
is outlined in the
Cessna
16-29

Cessna T182 Series Specifications

General

Engine Type	Lycoming IO-540-AB1A5
Horsepower	230 hp
Seating Capacity	4
Service Ceiling	18, 100 feet
Takeoff Distance	1, 600 feet
Landing Distance	1, 350 ft
Type	Single-engine
Max Takeoff Weight	3, 100 lb
Wingspan	36 ft
Length	29 ft
Height	9 feet 3 inches
Fuel Capacity	92 US gal (348 L)