Fuel Filler Cap - Metal - Cessna T182 Series Service Manual

MODEL 182 & T182 SERIES SERVICE MANUAL
1. Handle
2. Fuel Cap Body
3. O-Ring NOTE
4.
Check Valve (Vent)
5. Umbrella
Vent safety valve (4) opens at or before
6. Fuel Cap Lock Plate 16
.25 PSI vacuum pressure, and 5. 0 PSI
7. Washer
2 positive pressure.
8. Adapter Assembly
9. Placard
10. Nut 3
11. Safety Chain
12. Lug
13. O-Ring
14. Stem
15. Spring
16. Split Washer
17. Handle Pin
14
6
13
NOTE
A letter M on the fuel cap body located un-
der the handle (1), signifies that the O-ring
(3) mounting groove is machined.
Figure 12-5. Fuel Filler Cap - Metal (Sheet 1 of 2)
e.
If the umbrella continues to leak or is deterio- e. Place lock plate (6) on threaded end of stem (14)
rated it must be replaced. and align all three lugs (12) with three guide bosses
f. To remove umbrella, lubricate the umbrella
on the cap body (2).
stem with (MIL-H-5606) hydraulic fluid to prevent f. Check that square hole in bottom of lock plate
tearing the stem. (6) is aligned with square surface on threaded end of
g. To replace the umbrella, lubricate the umbrella
stem (14).
stem with (MIL-H-5606) hydraulic fluid and use a
NOTE
small blunt tool to insert the retaining knob on the
umbrella stem into the check valve body to prevent
It is possible to install the lock plate (6)
damaging the stem.
180° out of the desired position, if the align-
ment procedures in steps "d" and "f" are
12-16. REASSEMBLY.
not followed. If the cap will not fit when as-
a. Place split washer (16) in cap well correctly.
sembled, remove the lock plate (6) and re-
b. With handle (1) and O-ring installed on stem (14).
assemble after rotating it 180°.
insert stem (14) through split washer (16) on cap
body (2).
g. Compress the lock plate (6) and fuel cap body (2)
c. Place spring (15) on stem (14).
and secure with washer (7) and nut (10).
d. Position cap handle (1) to full "OPEN" position.
h. Connect fuel cap assembly to safety chain (11) and
reinstall in tank.
12-13