Cessna 150 Series Service Manual page 158

NOTE
A
The fuel vent line protruding beneath the wing 3
near the wing strut must be correctly aligned
to avoid possible icing of the vent tube.
A
150
AND
F150
B A150
AND FA150
6
1
2.90
3.75
1. Wing Strut
2. Wing Skin
3. Bracket
4.
Clamp
5. Grommet
6. Vent Tube.
-1.40
-
VENT LINE MUST BE PARALLEL
TO WING CHORD LINE. TOLER-
ANCE UP 5
°
, DOWN 0".
Figure 12-4.
Fuel Vent Location
P-S-661, or equivalent) and dry with compressed
intake manifold.
Operation of the plunger forces fuel
air.
directly into the engine intake manifold.
d.
Using a new gasket between filter screen and top
assembly, install screen and standpipe. Tighten
12-20.
REMOVAL AND INSTALLATION.
standpipe only finger tight.
a.
Disconnect and cap all lines at primer.
e.
Using all new O-rings, install bowl. Note that b.
Unscrew knurled nut and remove plunger from
step-washer at bottom of bowl is installed so that
pump body.
step seats against O-ring.
c.
Remove pump body from instrument panel.
f.
Turn shut-off valve to "ON" position, check for
leaks and proper operation.
NOTE
g.
Torque bottom nut (15) to 25-30 lb-in., and
safety wire to top assembly of strainer. Wire must
Visually inspect primer lines for crushed,
have right-hand wrap, at least 45 degrees.
kinked, or broken condition. Ensure proper
h.
Connect drain tube.
clamping to prevent fatigue due to vibration
and chafing.
12-18.
PRIMING SYSTEM. (See figure 12-2.)
d.
Prior to installing a primer, check for proper
12-19. DESCRIPTION.
The priming system is com-
pumping action and positive fuel shut-off in the lock-
prised of a manually-operated primer located on the
ed position.
instrument panel, and a line from the primer to the e.
Reverse preceding steps for installation.
SHOP NOTES:
Change 1 12-7