Cessna T188C - Page 113

MODEL
188 &
T188
SERIES
SERVICE
MANUAL
can be engaged to limit steering to 2. 5
°
left and right. f. Adjust turnbuckle (48) so that handle (index 4,
A "T" handle on
the fuselage structure to the left
of figure 4-8) locks and
unlocks tail wheel freely with-
the pilot's seat controls a spring-loaded locking lug out binding.
on the tail wheel assembly. To unlock the tail wheel, g. Safetywire turnbuckle.
the handle must be pulled aft and turned to the locking
detent. Unlocking the tail
wheel is accomplished by
5-32. BRAKE SYSTEM.
(See figure 5-10.)
turning the handle out of the locking detent and return-
ing it to the full forward position. NOTE
5-30. REMOVAL AND INSTALLATION. (See figure Throughout the brake system, when installing
5-7, sheet 3 of 3 and figure
5-8.) The figure may be
fittings or connecting lines
or hoses, use NS-40
used as a guide for removal and installation of system RAS-4 (Snap-On Tools Corp., Kenosha, Wis-
components. Lubrication of tail wheel lock control is consin), MIL-T-5544 (Thread Compound, Anti-
outlined
in figure 5-8.
seize, Graphite-Petrolatum)
or equivalent
sparingly
to male
fittings
only,
omitting
the
5-31.
RIGGING.
(See figure 5-7,
sheet 3 of 3
and
first two threads.
Always be
sure that a com-
figure 5-8.)
pound, the
residue from
a previously
used
a.
Referring to figure 5-8, clock
handle (4) fore-
compound, or any other foreign
material
and-aft in the unlocked
position to avoid handle
con- cannot enter
the system.
tacting hopper control micrometer crank.
b. Rotate sleeve (2) until slot (1) is at top. 5-33. DESCRIPTION. The hydraulic brake system
c. Pull
handle (4) up and
aft and rotate
to locking
consists of
two master cylinders,
each operated
by
detent.
Its rudder pedal, brake
lines connecting each mas-
d. Rotate tail wheel
as necessary so that slot
in ter cylinder to its
corresponding wheel brake cylin-
steering
lockplate (index
32 in figure
5-7, sheet 3
of der, and
a single disc
piston type brake
assembly
3) is facing forward. located at each main wheel.
e. Referring to figure 5-7, sheet 3 of 3, attach ca-
ble (47) to turnbuckle (48). Attach turnbuckle to bell-
crank (49)
on head
assembly
(14).
5-34.
TROUBLE
SHOOTING
- -
- BRAKE
SYSTEM.
TROUBLE PROBABLE CAUSE REMEDY
.DRAGGING BRAKES.
Brake
pedal binding.
Check and adjust properly.
Parking brake
holding brake
pedal Check and
adjust properly.
down.
Worn
or broken piston return
Repair
or replace master
spring.
(In master
cylinder.)
cylinder.
Insufficient clearance at Lock- Adjust as shown in figure 5-9.
O-Seal in master cylinder.
Restriction
in hydraulic
lines
Drain
brake lines
and clean
inside
or restriction
in compensating
of brake lines
with filtered
com-
port
in master cylinder.
pressed
air. Fill and bleed
brakes.
If cleaning
lines
fails to
give satis-
factory
results,
master
cylinder
may be faulty and should be re-
paired or replaced.
Worn,
scored or warped
brake Replace
discs and linings.
discs.
Damage or
accumulated
dirt re-
Clean
and repair
or replace
parts
stricting
free
movement
of
wheel
as
necessary.
brake parts.
BRAKES
FAIL TO
OPERATE.
Leak in system,
If master
cylinders
or wheel brake
assemblies are leaking, they must
be repaired or replaced.
5-31