Disc brake and protective boot therefor

Details Disc brake and protective boot therefor Disc brake and protective boot therefor

F - Mech Eng,Light,Heat,Weapons

16

D

188/143

F16D 55/22 (2006.01) F16D 65/14 (2006.01) F16J 3/04 (2006.01)

Patent

CA 1221041

ABSTRACT OF THE DISCLOSURE The open bore of a disc brake caliper assembly is protected by a resilient boot and retainer assembly (92). The piston (38) which forces the friction elements (26, 32) against the friction faces (14, 16) of the rotor (12) is provided with a circumferentially extending groove (118) which receives the bead (96) circumscribing one end of the boot (94). The bead (98) circumscribing the other end of the boot (94) is clamped against a land (122) of the piston 38 by a boot retainer (110). The boot retainer (110) is provided with a radially projecting portion (112) which is held against a circumferentially extending face (108) on the wall of the caliper housing (22) by the oil seal (116). Accordingly, the boot (94) may be removed and a new one in- stalled when the brake is serviced without disassembly of the caliper assembly by withdrawing the piston (38) until the groove (118) is brought into registry with the projection (106), thereby permitting removal of the old boot and installation of a new one.

439382

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