Fuel Selector Valve; Cleaning Inspection And Repair - Cessna T182 Series Service Manual

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