Thrush Aircraft S2R-T660, Maintenance Manual

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THRUSH AIRCRAFT INC - T660 TURBO THRUSH
AIRCRAFT MAINTENANCE MANUAL
6 -14
Effective: 12/17/03
and outlet hydraulic ports for foreign contaminates. Examine cylinder walls for scoring or
excessive wear. Blend and polish light scratches in piston cavities with fine emery cloth,
600 grit. Castings that are cracked or have damaged threads should be replaced.
I. Inspect anchor bolts for cracks, corrosion, permanent set and excessive wear. Replace
bolts that are bent, cracked or severely 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.
K. Inspect pressure plate assembly for cracks, damaged pins and excessive warped contours.
Replace pressure plate if cracked or severely 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.
*NOTE*
Clean outside of pistons before inserting pistons
into brake caliper housing assembly.
N.
Inspect torque plate for cracks, nicks, burrs, rust, excessive wear and brinelling in bolt
holes. Replace 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 one coat of aluminum lacquer.
** CAUTION **
Do not paint pistons or piston bores in the brake
housing. Keep paint off of brake linings.
Q. Check the wheel brake disc. See procedures under Inspection of Main Wheel Assembly.
BRAKE REASSEMBLY AND INSTALLATION
(Cleveland Disc Type)
A. Install friction spring on piston assembly (if removed).