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THRUSH AIRCRAFT, INC – MODEL S2R-R1340
replaced.
I.
Inspect anchor bolts for cracks,
corrosion,
permanent
excessive wear. Replace bolts that
are
bent,
cracked
corroded.
J. Inspect pistons for cracks, nicks,
burrs, or excessive wear. Remove
burrs and blend out nicks, using fine
emery cloth 600 grit, and clean
thoroughly.
*NOTE*
The pistons are equipped
with a friction spring (drag
ring) on the piston tail. It is
recommended that this ring
NOT be removed unless it
requires replacement.
K. Inspect pressure plate assembly for
cracks, damaged pins and excessive
warped contours. Replace pressure
plate
if
cracked
deformed.
Replace cracked or
deformed pins.
L. Inspect brake cylinder bolts for
cracks, damaged threads, and self-
locking feature. Replace bolts that
are cracked, bent or have damaged
threads.
M. Inspect brake linings for cracks, edge
chipping, and surface deterioration.
Linings should be replaced when
worn to a thickness of 0.100 inch
(see Fig. 6-3).
N. Inspect torque plate for cracks, nicks,
burrs, rust, excessive wear and
brinelling in bolt holes.
torque plate if cracked or severely
deformed.
O. Clean repaired surfaces and areas of
the brake assembly from which paint
has been removed.
P. Paint exposed areas with one coat of
zinc
primer
and
aluminum lacquer.
6-8
AIRCRAFT MAINTENANCE MANUAL
set
and
or
severely
or
severely
Replace
one
coat
of
Q. Check the wheel brake disc.
procedures under Inspection of Main
Wheel Assembly and Figure 6-3.
BRAKE SERVICING
MEASURING BRAKE LINING WEAR
Ref. figure 6-3
The
minimum
wear
replacement of metallic linings is 0.100
inch.
REMOVAL OF BRAKE LININGS FROM
CALIPERS
A. Remove backing plate attaching
bolts and washers, and remove back
plates and insulator shim.
B. Carefully slide brake caliper out of
torque plate bushing.
C. Slide pressure plate assembly (lining
carrier) off anchor bolts.
REPLACEMENT OF ORGANIC
LININGS
Ref. figure 6-4
Old organic linings may be removed by
using a small drift pin or carefully drilling
out the rivets with a 1/8-inch diameter
drill. Use care to prevent elongating the
rivet holes. Deburr the surface adjacent
to the lining to allow lining to set flush.
A. Clean pressure plate and back plate
surfaces of dirt, grease, etc. before
installing new linings.
B. Inspect pressure plate and back
plate for excessive corrosion, visible
damage, or excessive warping.
Straighten pressure plate too less
than 0.010 inch (0.254mm) flatness.
C. Align new factory authorized
replacement lining segments on
pressure plate/back plates and install
P/N 105-0200 rivets, using
Cleveland's rivet set, P/N 199-1, or
appropriate riveting tool.
See
thickness
for
Effective: 01/01/08
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