Process for remanufacturing a master cylinder
AssigneeRayloc
InventorEdward R. Kipling
Life of this patent
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AssigneeRayloc
InventorEdward R. Kipling
Estimating the term…
A worn or defective brake master cylinder is disassembled and degreased. The bore of the housing is reamed to a diameter somewhat larger than the desired finished bore diameter. A stainless steel tube is then cut to produce an insert sleeve of correct length for the housing bore and the outside diameter of the sleeve is ground to a slightly smaller diameter than the reamed diameter of the cylinder bore. The reamed bore and the exterior surface of the stainless steel sleeve are coated with an adhesive and the sleeve is inserted into the bore to the correct depth. The interior of the sleeve is then roller burnished to expand the sleeve into intimate contact with the bore. The sleeve is then drilled from the outside of the master cylinder to reopen all of the necessary ports in the master cylinder bore, following which the bore of the sleeve is honed to a very smooth finish.
A method of remanufacturing a brake master cylinder comprising the steps of disassembling a defective brake master cylinder having a housing bore and a lateral port extending through its wall, degreasing the empty brake master cylinder housing, blasting the housing bore of the disassembled cylinder with a solid abrasive to remove rust and corrosion therefrom, rust-proofing the empty cylinder housing, reaming said housing bore to a diameter slightly larger than the desired finished bore diameter of said cylinder making a corrosive resistant metal sleeve of proper length for insertion in said bore, grinding the exterior of the sleeve to a diameter slightly smaller than the diameter of the reamed housing bore, coating said bore and the exterior of said sleeve with adhesive, inserting said sleeve into said bore to a correct depth, removing excess adhesive near the mouth of the bore following said insertion, expanding the sleeve against the surface of the bore by roller burnishing the bore of the sleeve, drilling through the sleeve from the exterior of said housing to reopen said lateral port, and honing the interior of said sleeve to a smooth finish.
Dependencies are inferred from the claim text.