Cessna T188C - Page 179

MODEL
188 &
T188
SERIES
SERVICE
MANUAL
NOTE
b.
Loosen clamp
securing
control
to engine.
c. Shift control housing in its clamp so that the
Some controls have intricate parts that will mixture arm on the carburetor is full open (FULL
fall out and
possibly be lost if the control
is RICH).
Tighten the clamp in this position.
pulled from the
housing while the control is
d. Unlock and pull
control full OUT. Check that
disconnected.
mixture arm on carburetor
is full closed (IDLE CUT-
OFF).
11-66. RIGGING.
When adjusting
any engine
control,
e. Check that
the bolt and
nut at the mixture
arm
it is important to check that
the control slides smooth-
on the carburetor secures the
control wire and that
ly throughout its full
range of travel, that it
locks se- the bolt will
swivel in the arm.
curely
if equipped with a locking device
and that the f.
Bend the wire tip 90 degrees to
prevent wire
arm or lever it operates
moves through its full arc
of from being withdrawn if
the locking nut should be-
travel. come loose.
CAUTION
NOTE
Whenever
engine
controls are
being discon-
When installing
a new control,
it may be
nected,
pay particular
attention
to the exact
necessary to
shorten the
wire and/or
position,
size and number
of attaching
washers
housing.
The mixture
arm on
the car-
and
spacers.
Be sure
to install
attaching
parts
buretor
must contact
the
stops in
each
as noted when
connecting
controls.
direction
and the control
should have
approximately 1/8-inch cushion when
11-67.
THROTTLE
CONTROL.
pushed
full in.
a. Disconnect throttle control rod end from throttle
arm on carburetor.
Note
EXACT position
and size of
*Refer
to the inspection
chart in Section
2
bolt and washers for reference
on reinstallation.
for inspection, lubrication
and/or replace-
b.
In the
cockpit,
move
throttle
control
lever
full
ment
interval
for
the mixture
control.
forward, then pull lever aft approximately 1/8-inch
from full forward
for cushion
and tighten friction
con- 11-69.
PROPELLER
CONTROL.
Refer to Section
trol
knob on
quadrant
to prevent
movement
of lever.
13 for rigging
propeller
and governor
control.
c. Move throttle control arm on the carburetor to
full OPEN
position
(against
stop),
adjust rod
end on
11-70.
CARBURETOR
HEAT CONTROL.
throttle control
to align with arm and install attaching
a. Loosen clamp
securing control to the bracket
bolt
and washers.
on
airbox.
d. Release
friction
lock and
check for
full travel
of
b. Push control
full
in, then
pull it out
approxi-
arm on
carburetor.
mately
1/8
inch from
panel for
cushion.
c.
Shift control
housing in its
clamp so that
the
NOTE
valve in the
airbox is seated in the full
open position.
Tighten
clamp
in this
position.
The
result of rigging,
in all cases,
is the
d.
Pull out on the
control and check
that the air
throttle control
must be rigged
so that the
valve
inside the airbox
seats in the
opposite direction.
control
arm on the
carburetor contacts
the
e. Check
that the bolt
and nut on the
air valve lever
mechanical
stops in
both directions,
that
secures
the control
wire
and that
the bolt will
swivel
the throttle lever has approximately 1/8- in the lever.
inch
cushion at
the control
quadrant
when
f. Bend
the wire
tip 90 degrees
to prevent
it
from
in full
OPEN
position
and
that the
small
being withdrawn
if the
attaching
nut should
become
retaining
ring on
some
controls,
contacts
loose.
the end of the control housing at the same
time the idle stop is reached. NOTE
* Refer
to the inspection chart in
Section 2 When
installing a new control,
it may be nec-
for inspection, lubrication and/or replace- essary to shorten the wire and/or control
ment interval for the throttle control, housing. The air valve must seat in both
positions
and the
control should
have approxi-
11-68.
MIXTURE CONTROL.
mately
1/8 inch cushion
at the instrument
panel
a. Push
mixture
control
full
IN, unlock
and
pull
when
pushed
full in.
control
OUT
approximately
1/8-inch
for
cushion.
* Refer to the inspection chart in Section 2
for inspection, lubrication and/or replace-
ment
for the carburetor
heat
control.
11-23