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BRAKE ASSEMBLY MAINTENANCE.
Single disc brake-repair and parts replacement diagram

Aviation Structural Mechanic (H&S) 3&2 - How airplanes are built and how to maintain them
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Figure 12–48.—Cross-sectional view of a single disc brake assembly with captured torquing-type automatic adjuster. The automatic adjusting feature may be referred to as a captured torquing type or captured nontorquing type. Figure 12-48 shows a typical captured torquing-type automatic adjuster. It is mandatory that clearance be established between the linings and the discs before torquing the automatic adjusting nut to the amount specified for the brake involved. Otherwise, the brake will drag until an amount equal to the built-in 1. Locknut 4. Grips, split collar 2. Threaded bushing 5. Washer 3. Spacer Figure 12-49.—Captured nontorquing-type automatic adjuster. clearance is worn from the face of the linings. With the adjusting nuts properly torqued, the friction between the grip and the adjusting pin is great enough to overcome the compression of the return spring, and the adjusting pin will be pulled through the grip only to compensate for lining wear. After torquing the automatic adjusting nuts to the specified value, back them off and retorque several times. This procedure will ensure proper mating of all parts and the correct torque on the final assembly. Figure 12-49 shows the captured nontorquing-type automatic adjuster used on some single and dual disc brake assemblies. Brakes that contain nontorquing adjusters can be identified by the locknut and threaded bushing over each adjusting pin. The only difference between the torquing- and nontorquing-type automatic adjustment is the method used to restrict the movement of the adjusting pin. The torquing-type adjustment uses a tapered grip, and the nontorquing uses one or more l/4-inch-wide grips composed of brass liners. 12-54







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