Cessna T188C - Engine Controls; Description; Rigging

MODEL
188 & T188
SERIES SERVICE
MANUAL
f. In
the cockpit,
push alternate
air control
full
NOTES
IN and
check that alternate
air door
(45) is fully
closed.
After
completion of
step "c" the alternate
g. If door (45)
is NOT fully
closed, loosen
clamps
air control
should be
properly rigged.
securing
control
(37) to
engine
mount (39)
and
however
in some
cases,
it becomes
support assembly
(41) and slide control through
necessary
to shorten the control housing
clamps until
door is fully closed. Tighten
clamps, in order
for the air valve (52) to reach
full
h.
In the cockpit. unlock
alternate air
control.
open.
pull control full
OUT (approximately
3 inches)
and
check that alternate
air door (45) is fully open.
The result of rigging.
in all cases, is the
alternate air valve (52) must be fully
NOTE OPEN when the control in the cockpit is
pulled
a maximum
of
3 inches.
Also
After completion
of step "h" the alternate
the
valve is fully CLOSED when
the
air
control should be properly
rigged,
control is pushed in and that
no binding
however,
in some
cases. it may
become
of the system
is experienced.
necessary
to shorten
the control
housing
in order
for the bellcrank
(36)
to reach
full
11A-60.
IGNITION
SYSTEM.
Refer
to Section
11.
travel.
If so,
proceed
to step "".
L1A-61. ENGINE CONTROLS.
i. Loosen clamp-bolt at bellcrank (36). straighten
control wire and
slide wire from clamp-bolt.
11A-62. DESCRIPTION.
The throttle and propeller
j. In the cockpit. using
care not to lose ball
governor control levers are
in the control quadrant
bearing from
the control at instrument
panel.
mounted
to the left
of the pilot's
seat. The mixture
unlock and pull
control OUT until wire is out-of-
control is equipped
with a position locking device
sight
inside housing
at the engine
end of control.
which prevents
vibration-induced
"creeping"
of the
Cut the housing
off as required to allow bellcrank
control. The alternate
air control is located on
the
to attain
full travel and reinstall
wire in clamp- lower
left side of the instrument
panel. On the
bolt. Bend wire to a 90
°
angle as a safety later model aircraft, an additional "Palnut" type
precaution.
locknut
was installed
in back
of the existing
k. Check operation of air door in both directions locknut at the engine end of all throttle and
making sure the
control in the cockpit does
not propeller controls
that contain rod ends.
pull out more than 3 inches maximum.
NOTE
NOTES
Some controls have intricate parts that
The result of rigging, in
all cases, is the
will fall out and possibly
be lost if the
alternate air door (45) must be fully control is pulled from the housing while
OPEN when
the control in the
cockpit is
the control is disconnected.
pulled
out a
maximum
of 3 inches.
that
the door is fully CLOSED when the 11A-63. RIGGING. When adjusting any engine
control is pushed
in and that
no binding
control.
it is important
to check
that the control
of the
system is experienced.
slides smoothly
throughout its full range
of travel.
that it locks securely if equipped with a locking
Refer to
the inspection
chart in Section
2
device and that
the arm or
lever it operates
moves
for inspection
and/or
replacement
through
its
full arc of travel.
interval
for
the alternate
air control.
11A-59.
RIGGING,
ALTERNATE
AIR ROTARY
VALVE (BEGINNING WITH
AIRCRAFT SERIAL
Whenever engine controls
are being
18802860) Refer to figure
11A-6, sheet 7.
disconnected, pay
particular attention to
the exact position. size and number of
NOTE
attaching
washers
and spacers.
Be sure
to install attaching
parts
as noted
when
Cowling must be removed prior to connecting controls.
rigging
of alternate
air control.
11A-64. THROTTLE CONTROL.
a.
In the cockpit push alternate
air controls full a. (THRU
AIRCRAFT SERIAL 18800832.)
(See
IN and check that alternate air valve (52) is fully to figure 11A-6, sheets 1, 2 and 3.)
closed.
b. If
air valve (52)
is not fully
closed. loosen
CAUTION
locking
nut (54) retaining
control
wire (55) to valve
arm (56) and move valve to closed position. Whenever throttle control is disconnected
Tighten nut. at the engine, pay particular attention to
c. In the cockpit. unlock
alternate air control.
the EXACT position,
size and number of
pull control full OUT (approximately
3 inches) and attaching
bolts and washers. Be
sure to
check air valve (52)
is fully open.
install attaching
parts as noted when
reconnecting controls.
Revision
1
11A-19