Cessna 182 1978 - Cleaning Inspection and Repair; Fuel Selector Valve

MODEL 182 & T182
SERIES SERVICE
MANUAL
At least
one of the vent tubes
should remain
12-28. DISASSEMBLY.
(See figure
12-7.)
behind
the strut to
insure that
icing cannot
a. Remove
fuel
selector valve
in accordance
with
block
both vents.
paragraph
12-27.
b. Remove
screws
(1) securing
cover
(2) to valve
g. No
adjustment
need be performed
when
satis-
body
(7) and carefully
remove
cover.
Discard 0-
factory
equalization
of fuel tank feeding
is obtained.
rings (23)
and (6), but
retain ball (3)
and spring (4)
for reinstallation.
12-25.
FUEL SELECTOR
VALVE.
(See figure
c.
Slowly withdraw
rotor (5) from
valve body.
12-7.)
12-26. DESCRIPTION.
A four-position
selector
NOTE
valve is located under the floorboard aft and left
of
the pedestal. The selector
valve positions are
Removal
of rotor (5) will allow
seal (8), O-
labeled: LEFT,
BOTH ON, RIGHT,
and OFF. Valve
ring (9), washer
(10) and spring (11)
(one
repair
is limited to replacement
of component parts
each installed
in both inlet ports)
to spring
(see figure 12-7). Serial
18265176 thru 18268055;
free.
controls consist of: handle, gear assembly, drive
shaft,
and attaching parts. Serial 18288056 thru
d. Remove washer (24), plug (13) and
O-ring (12).
18268434; controls
consist of handle,
shaft, and
attaching
parts. Beginning
with 18268435 controls
12-29. CLEANING,
INSPECTION
AND REPAIR.
consist of: handle ,
shaft, roll pin, spring,
collar
and attaching parts. The
handle must be pushed
NOTE
down to allow the roll pin to clear a lock ring
slot
before rotating
shaft through
the four oper-
Repair of
damaged or worn
parts of the
ating
positions.
selector
valve assembly
is NOT
authorized
and
therefore,
is limited
to
replacement
of
12-27.
REMOVAL
AND
INSTALLATION.
(See fig-
component
parts
only.
component parts only.
ure 12-7. )
a. Drain
all fuel from wing tanks,
fuel strainer,
a. Clean disassembled
parts by washing
in Stoddard
lines
and selector
valve, observing
precautions
out- solvent
or equivalent
Blow parts
dry using clean
lined in paragraph 12-3.
compressed
air.
b. Remove
selector
valve
handle
(15)
and pedestal
b.
Inspect
all parts
for
obvious
wear or
damage
as
cover.
follows:
c.
Peel back carpet
as required
to gain access
to
Check detent
holes in cover
(2) for excessive
inspection
plates
aft
of pedestal
structure.
wear and
examine
bearing
surfaces
with
rotor
(5).
d.
Disconnect drive
shaft assembly
(18) at selector
2. Inspect shaft
and bearing surfaces
of rotor
valve
(21).
(5)
for removal
of black
anodized
finish
indicating
e.
Disconnect and cap inlet
and outlet fuel lines
to wear. Check
for nternal corrosion
of drilled pas-
valve. sages
f. Remove
screws attaching
valve to
mounting
3. Examine
valve body
(7) for wear.
cracks.
bracket
(19) and withdraw
valve,
distortion and
internal corrosion.
Any damage to
g.
Reverse
preceding
steps
for installation.
Ser-
thread
surfaces
at inlet
and outlet
ports
or cover
at-
vice
aircraft in accordance
with Section 2,
turn fuel tach
screw holes is cause
for rejection.
selector
valve to
ON position
and check
for leaks.
SHOP NOTES:
12-17