Abstract: A brake caliper (1) including a caliper body (2) with a pair of spaced limbs (3), a pair of end bridging members (4) each joining together a respective end of each limb (3) and an intermediate bridging portion (5) between the bridging members (4) and joining together a respective intermediate portion of each limb (3). Each limb (3) includes a hydraulic circuit (30) including fluidly connected hydraulic cylinders (31a, 31b, 31c) within which respective pistons (6a, 6b, 6c) are received. The hydraulic circuits (30) are fluidly connected together by a fluid channel (7). Part of the fluid channel (7) is formed in the intermediate bridging portion (5) and extends diagonally across the space between the limbs (3) and between the bridging members (4).

Abstract: A piston assembly having a piston member with a removable wear sleeve and a method for removing and replacing the same having a center pin extending at least partially through the sleeve, a housing engaging the sleeve, and a mandrel engaging the center pin and the sleeve that may be removed to allow for the replacement of the sleeve while the piston member is in service.

Abstract: Processing used pistons includes receiving defective and non-defective pistons removed from service, sorting the used pistons into standard and expanded processing categories, and repairing a defect in pistons in the expanded processing category via welding. An inventory of interchangeable replacement pistons is populated with remanufactured pistons from both the standard and expanded processing categories.

Abstract: A cleaning and piston replacement kit for an accumulator of a vehicle transmission which includes a brush for cleaning, reconditioning and polishing worn accumulator bores and replacement pistons each of which includes a pair of sealing rings for supporting and spacing the replacement pistons from the accumulator bores to thereby prevent scrapping of the walls of the bores by movement of the pistons within the bores and a method of reconditioning the accumulator bore.

Abstract: A method is provided for producing a piston for an internal-combustion engine of the structure in which a piston body which is composed of a crown having a groove for fitting a piston ring into an outer circumference surface and a skirt in connection with the bottom of the crown is provided with an annular cavity for flowing cooling liquid on an inside of the groove, the method comprising the steps of: forming the crown and the skirt individually; forming an annular groove for the annular cavity in the inner bottom of the crown and an annular rib in connection with the open edge of the annular groove before the crown and the skirt are joined together; bending the rib toward the opening of the annular groove by application of pressure to close the opening of the annular groove to thereby form the annular cavity; and joining the crown and the skirt together.

Abstract: Apparatus and method for extending the life of a booster valve in an automatic transmission. The booster valve commonly resides in the pump stator body and is modulated by reverse oil pressure and pressure control solenoid pressure signals. Pressure signals from the reverse oil pressure and the pressure control solenoid force a booster valve piston towards a pressure regulator valve piston also generally residing in the pump stator body. The booster valve piston slides inside a booster valve sleeve, and over time, the booster valve sleeve wears and the performance of the booster valve degrades or fails. The present invention replaces an original inner booster valve spring with a longer (or in some cases shorter) replacement booster valve spring to shift the operating range of the booster valve piston to an unworn portion of the booster valve sleeve to extend the life of the booster valve.

Abstract: A transmission system and method of repair having a transmission servo rod received within a transmission housing bore, the rod having an aperture disposed along an exterior surface of the rod, configured to receive transmission fluid from a port within the transmission housing bore, a first recessed groove in the exterior surface of the rod disposed above the aperture; a second recessed groove in the exterior surface of the rod disposed below the aperture; and a first and second resilient sealing member received within the first and second recessed grooves, respectively, the resilient sealing members configured to engage an inner surface of the transmission housing bore.

Abstract: A piston allowing a lubrication layer of a resin coating with a low friction coefficient to be tightly adhered to a skirt portion of a piston for an internal combustion engine, with low friction, superior wear resistance, and superior anti-seizing properties and that can reduce wear of a cylinder inner wall even if the lubrication layer is peeled off or abraded, is provided. Metal or ceramic fine particles having an average particle diameter of 20 ?m to 400 ?m are injected with compressed air or compressed nitrogen as a mixture fluid onto the skirt portion of the piston, made of an aluminum alloy and produced by a method such as casting or forging, at an injection speed of 80 m/s or more or an injection pressure of 0.2 MPa or more to be collided with the skirt portion, thereby uniformly making a microstructure of a piston base material fine-grained in a depth range of 1 ?m to 15 ?m from a surface of the skirt portion and forming a modified layer with an activated surface.

Abstract: In order to increase the displacement of a motorcycle engine, the existing cylinder block of the engine is dismounted from its crankcase, and the existing piston is dismounted from its connecting rod. Then, a new piston having a greater diameter than the dismounted existing piston is mounted on the connecting rod, and a new cylinder block having a greater bore diameter than the existing dismounted cylinder block is connected to the crankcase while sliding the new large-diameter piston along the inner wall of the bore of the new cylinder block. The new cylinder block has a bottom end that is located above the top end of the crankcase when mounted on the crankcase. The new piston is short enough not to be inserted into the crankcase when moved to the bottom dead center. This eliminates the need to disassemble the crankcase or any parts in the crankcase. It is thus possible to easily increase the engine displacement.

Abstract: Apparatus and method for extending the life of a booster valve in an automatic transmission. The booster valve commonly resides in the pump stator body and is modulated by reverse oil pressure and pressure control solenoid pressure signals. Pressure signals from the reverse oil pressure and the pressure control solenoid force a booster valve piston towards a pressure regulator valve piston also generally residing in the pump stator body. The booster valve piston slides inside a booster valve sleeve, and over time, the booster valve sleeve wears and the performance of the booster valve degrades or fails. The present invention replaces an original inner booster valve spring with a longer (or in some cases shorter) replacement booster valve spring to shift the operating range of the booster valve piston to an unworn portion of the booster valve sleeve to extend the life of the booster valve.

Abstract: A method for restoring a piston pin and/or an articulating pin after operating in an engine, the method includes removing material from the pin so that the pin has a concentric shape, conditioning the pin to accept application of a new material, and plating the outer diameter of the pin so as to restore the pin to near original dimensions.

Abstract: The invention relates to a tubular piston for a piston engine, comprising a tubular section, a collar shaped region and a ball pivot formed thereon, and an inner tube arranged in an outer tube. A cavity is at least partially formed between the outer tube and the inner tube. Said cavity is sealed from the area surrounding the hollow piston in a pressure-tight manner, by a material, especially a solder material, which is arranged in the cavity in a positively locking manner by means of heating.

Abstract: The present invention provides for a method of repairing a part, having a damaged portion that has deviated from an original configuration, by using a laser cladding process. The process comprises the steps of applying cladding material to the damaged portion, and irradiating the cladding material with the laser beam until such time as the cladding material substantially bonds with the part thereby forming a repaired area having a configuration substantially the same as the original configuration.

Abstract: An apparatus and method of utilization thereof is provided for machining pistons of reciprocating piston internal combustion engines. The piston is held in a work station by its interior cavity and the oil rings, oval side surface and hinge pin bore are machined on the piston without any refixturing of the piston required.

Abstract: A method of repairing metal surfaces, in particular hydraulic cylinder interior walls and pistons, which are damaged by scoring, denting, grooving, etc. A catalytically hardened synthetic resin, preferably an epoxy, is mixed with a selected metal powder to form a mixture which, when hardened has a coefficient of thermal expansion substantially equal to that of the metal surface. A hardener is mixed with the filled resin and the damaged areas are filled with the mixture. The resin is cured, then dressed so that the damaged areas conform to adjacent undamaged surfaces. The repair area (and other surface areas, if desired) is then electroplated with a hoard, tough, wear-resistant metal, preferably by brush plating. The plated areas are then polished and the repaired article is ready for use.