Cessna 177 SERIES Service Manual

on. The
pump parallels
the engine-driven
fuel pump
dirt and
solvent
with air pressure.
Check
gasket (2)
and is used
when fuel
pressure
drops below
2 psi.
and
replace if
deteriorated.
Clean
cover (1).
Fuel
bypasses
the auxiliary
pump when
the
pump is
d. Remove
retainer
(5) from
tube
(11) using
thin
not in operation.
The
auxiliary
pump is used
as a
nose pliers
to spread
and remove
ends of
retainer
boost in starting
and
in the event
of engine-driven
from tube.
pump
failure.
e. Remove
washer
(6),
O-ring (7),
cup valve
(8),
spring
(9) and plunger
(10) from tube (11).
12-41.
REMOVAL
AND INSTALLATION.
f.
Wash parts
in solvent
and
blow out
with air
a. Remove
cowling as
necessary
to gain access
to
pressure.
If plunger
does not wash
clean or
if there
pump.
are any
rough spots,
gently clean
surface with
crocus
b.
Remove
safety wire
from shut-off
valve
control
cloth. Slosh
pump
assembly
in solvent,
being
care-
knob
and pull
control
to "OFF"
position.
ful not
to submerge
electrical
lead
(14). Blow
out
c. Drain
fuel from
pump, lines
and strainer
with
tube with
air pressure
and swab
inside of tube
with a
quick-drain
control.
cloth
wrapped
around a
stick.
d.
Ensure
master
switch
and pump
switch
are
in
g.
Insert
plunger
(10) into
tube (11),
buffer
spring
"OFF" position.
end
first. Check
fit by
slowly raising
and
lowering
e.
Disconnect
and
cap or plug
all fuel
lines at
pump.
plunger
in tube.
If a click
cannot
be heard,
inter-
(Observe
the
precautions
in paragraph
12-3.)
rupter assembly
is
not functioning
properly
and
pump
f. Disconnect
electrical
lead
from pump.
should
be replaced.
g. Remove
attaching
bolts and remove
pump.
h. Install
spring (9),
cup valve
(8), O-ring
(7) and
h.
Reverse
preceding steps
for installation.
washer
(6).
Compress
spring (9) and
install retain-
i.
Push
shut-off
valve control
knob
to "ON"
posi-
er (5)
with ends
of retainer
in side
holes of
tube (11).
tion
and check
for leaks.
i. Place
gasket
(2) and magnet
(3)
in cover
(1) and
j. Safety
wire
shut-off
valve knob
to its
mounting
install
filter
(4) and
cover assembly.
Twist cover
bracket
with
. 018 inch
diameter
mild
steel
safety
by hand
to hold
in position
on
pump
body. Using
wire.
5/8" wrench.
securely
tighten cover
(1).
12-42.
DISASSEMBLY
AND ASSEMBLY.
(See fig-
{CAUTION
ure 12-8. )
a. With
5/8" wrench,
release
cover (1).
Twist
Do not tamper
with seal
at center
of mount-
cover
by hand
to remove
from
body
(13).
ing bracket
(12)
as it
retains
the dry
gas,
b. Remove
filter (4),
magnet (3)
and gasket
(2).
which
surrounds
the electrical
system
in the
c.
Wash
filter
(4) in cleaning
solvent
and blow
out
upper
portion
of the
pump.
SHOP
NOTES:
12-16

Cessna 177 SERIES Specifications

General

Manufacturer	Cessna
Engine Type	Piston
Wingspan	35 ft 6 in (10.82 m)
Seating Capacity	4
Number Built	4, 295
Engine	Lycoming O-360
Horsepower	180 hp
Maximum Takeoff Weight	2, 500 lb (1, 134 kg)