Replacement Of Metallic Linings; Reassembly Of Metallic Linings To Caliper - Thrush Aircraft S2RHG-T65 TURBO THRUSH Maintenance Manual

Table of Contents

THRUSH AIRCRAFT INC – MODEL S2RHG-T65 TURBO THRUSH

Pry off old lining using a screwdriver.

Clean pressure plate and back plate surfaces of dirt, grease, etc. before installing

new linings.

Inspect pressure plate and back plates for excessive warping. Straighten

pressure plate too less than 0.010" flatness.

Check lining attachment pins for mushroomed heads or other visible

damage. Damaged pins may be replaced by carefully drilling out the pins (refer

to Fig. 6-4a).

Install replacement pin in holes in pressure plate or back plate with tail of pin sticking

out the counter bore side of the part.

Hole locations in pressure plates / back plate should allow installation of lining after pin

upset.

Place pins and pressure plate or back plate on a flat metal surface.

Using Cleveland's 199-1 Rivet Set Kit orbital or screw type press, install pins on

pressure plate or back plate.

Check to be sure pins are tight and movement free with no distortion of parts.

Refer to (Fig. 6-4a) for Pin installation acceptance criteria.

Apply a light film of spray adhesive (3M Super 77 or equivalent) to metal backing

of lining and install lining segments onto pins. Check to insure metal backing is

tight against the pressure plates / backing plates.

The adhesive is used to maintain position of lining until the

brake is assembled onto disc, and will be burned off in the

first few stops. Lining will remain in place on assembly

trapped between the brake disc and pressure / back plates.

REASSEMBLY OF METALLIC LININGS TO CALIPER

Carefully wipe dirt, grease, etc. from cylinder, pressure plate, and portions of

piston extending beyond cylinder face, and push piston back into cylinder.

Slide pressure plate with new lining over anchor bolts and install brake caliper

into torque plate. For equipment that is operated in an amphibious environment,

or in extremely wet climates, lubricate the anchor bolt with Lubriplate. For

equipment used in a nonamphibious environment, or in extremely wet climates,

lubricate the anchor bolt with a dry film lubricant (silicon spray). DO NOT USE

GREASE OR OIL. These materials will attract dirt enhance the wear of the

anchor pins.

Install back plate attachment bolts and washers in brake caliper.

6-14

AIRCRAFT MAINTENANCE MANUAL