Abstract: A method for rebuilding a flow control valve, may be performed by first providing a flow control valve having a rotor positioned in a chamber of a valve body. The rotor has a valve stem. A top cover plate is mounted to the valve body above the rotor and has a first bore through which the valve stem protrudes. The top cover plate is removed so the rotor can be removed from the valve body. A seal is positioned on the top cover plate along the first bore so that when the rotor and top cover plate are placed in or on the valve body, the flow control valve is sealed at the interface between the top cover plate and the valve stem.

Abstract: An apparatus for removing and installing a rotor in an electric motor that is coupled to a shaft of a machine comprises a table having a support area for supporting and mounting the machine and motor. A tool is positioned on the table to move back and forth relative to the machine and motor, and engages the rotor to remove and install the rotor. A flange on the tool is secured to a temporary flange on a rotor sleeve. The tool also includes a piston concentrically aligned with the rotor and shaft to engage the shaft. A driving mechanism is linked to the piston to actuate the piston in a backward or forward direction relative to the machine and motor. The tool housing, responsive to movement of the piston, moves on the table in a direction opposite to the direction of movement of the piston to remove or install the rotor.

Abstract: An apparatus for removing and installing a rotor in an electric motor that coupled to a shaft of a machine comprises a table having a support area for supporting and mounting the machine and motor. A tool is positioned on the table to move back and forth relative to the machine and motor, and engages the rotor to remove and install the rotor. A flange on the tool is secured to a temporary flange on a rotor sleeve. The tool also includes a piston concentrically aligned with the rotor and shaft to engage the shaft. A driving mechanism is linked to the piston to actuate the piston in a backward or forward direction relative to the machine and motor. The tool housing, responsive to movement of the piston, moves on the table in a direction opposite to the direction of movement of the piston to remove or install the rotor.

Abstract: A method for rebuilding a flow control valve, may be performed by first providing a flow control valve having a rotor positioned in a chamber of a valve body. The rotor has a valve stem. A top cover plate is mounted to the valve body above the rotor and has a first bore through which the valve stem protrudes. The top cover plate is removed so the rotor can be removed from the valve body. A seal is positioned on the top cover plate along the first bore so that when the rotor and top cover plate are placed in or on the valve body, the flow control valve is sealed at the interface between the top cover plate and the valve stem.

Abstract: A method for rebuilding a flow control valve, may be performed by first providing a flow control valve having a rotor positioned in a chamber of a valve body. The rotor has a valve stem. A top cover plate is mounted to the valve body above the rotor and has a first bore through which the valve stem protrudes. The top cover plate is removed so the rotor can be removed from the valve body. A seal is positioned on the top cover plate along the first bore so that when the rotor and top cover plate are placed in or on the valve body, the flow control valve is sealed at the interface between the top cover plate and the valve stem.

Abstract: A method and computer program product for identifying one or more malfunctions in a locomotive air compressing system is provided. Some of the malfunctions may be correctable onboard a locomotive, and constitute onboard serviceable malfunctions, while the remaining of the malfunctions may only be correctable with the air compressing system being uninstalled and serviced at an off-board servicing site, such malfunctions constitute off-board serviceable malfunctions. The method allows monitoring responses indicative of a malfunction type that may be associated with at least with one of the following: a corrective action that may be performed onboard the locomotive, and a corrective action that may only be performed off-board the locomotive.

Abstract: Method, apparatus and computer program product are provided for controlling desiccant regeneration in air dryer equipment for a railroad locomotive. The method allows calculating an amount of air conditioned by the air dryer equipment over a period of time. The method further allows storing predefined criteria for initiating desiccant regeneration in the air dryer equipment. The calculated amount of air conditioned by the air dryer equipment is correlated relative to the predefined criteria, and upon the calculated amount of air conditioned by the air dryer equipment meeting the predefined criteria, desiccant regeneration is initiated in the air dryer equipment.

Abstract: A method for rebuilding a flow control valve, may be performed by first providing a flow control valve having a rotor positioned in a chamber of a valve body. The rotor has a valve stem. A top cover plate is mounted to the valve body above the rotor and has a first bore through which the valve stem protrudes. The top cover plate is removed so the rotor can be removed from the valve body. A seal is positioned on the top cover plate along the first bore so that when the rotor and top cover plate are placed in or on the valve body, the flow control valve is sealed at the interface between the top cover plate and the valve stem.

Abstract: An actuator (16) for a rotor valve (10). The actuator includes a rack (86) for driving a pinion gear (87) of the valve. The rack is moved between first and second positions by the action of a first piston (88). Movement of the first piston and rack is selectively restricted in one direction by the movement of a moveable stop (104) from a withdrawn position to an extended position, thereby defining a third position of the rack. The moveable stop may be driven by a second piston (102). The first and second pistons may be powered by a common compressed air supply (122). The cross-sectional area of the first piston may be at least 1.4 times the cross-sectional area of the second piston to ensure that the force exerted by the first piston is not sufficient to displace the moveable stop from the extended position when the second piston is open to the compressed air supply.

Abstract: An actuator (16) for a rotor valve (10). The actuator includes a rack (86) for driving a pinion gear (87) of the valve. The rack is moved between first and second positions by the action of a first piston (88). Movement of the first piston and rack is selectively restricted in one direction by the movement of a moveable stop (104) from a withdrawn position to an extended position, thereby defining a third position of the rack. The moveable stop may be driven by a second piston (102). The first and second pistons may be powered by a common compressed air supply (122). The cross-sectional area of the first piston may be at least 1.4 times the cross-sectional area of the second piston to ensure that the force exerted by the first piston is not sufficient to displace the moveable stop from the extended position when the second piston is open to the compressed air supply.

Abstract: A rotor valve (10) having a rotor seal (34) containing a centrally disposed opening (52) for directing an external pressure (Pe) to a rear surface (35) of the seal for applying a sealing force against a sealing surface (36). A projection (38) of the seal surrounding the opening is disposed within a bore (40) formed in a rotor (14) of the valve. An O-ring seal (44) defines the portion of the rear surface exposed to the external pressure. The rotor may be supported on one end by a bearing assembly (80) and may be open at the opposed end for receiving incoming water. Circumferentially distributed slip-surface plugs extend radially beyond the diameter of the rotor to support the rotor along an interior surface (39) of the valve body (12).

Abstract: A compressor system, method and kit are provided for supplying pressurized air to a main storage reservoir of a locomotive. The compressor system includes a high-pressure cylinder having at least one outlet valve having a first set of sealing characteristics. The compressor system further includes a piping assembly connected to the outlet valve to selectively pass pressurized air to the reservoir. The piping assembly may comprise a T-fit coupler connected to first and second pipes for delivering the pressurized air to the reservoir. A check valve may be installed in a chamber defined in the T-fit coupler. The check valve has a second set of sealing characteristics different than the sealing characteristics of the outlet valve. The check valve is responsive to predefined operational conditions of the air compressor system so that when the compressor system is supplying pressurizing air to the reservoir the check valve is set to an open condition.

Abstract: Method, apparatus and computer program product are provided for controlling desiccant regeneration in air dryer equipment for a railroad locomotive. The method allows calculating an amount of air conditioned by the air dryer equipment over a period of time. The method further allows storing predefined criteria for initiating desiccant regeneration in the air dryer equipment. The calculated amount of air conditioned by the air dryer equipment is correlated relative to the predefined criteria, and upon the calculated amount of air conditioned by the air dryer equipment meeting the predefined criteria, desiccant regeneration is initiated in the air dryer equipment.

Abstract: A method and computer program product for identifying one or more malfunctions in a locomotive air compressing system is provided. Some of the malfunctions may be correctable onboard a locomotive, and constitute onboard serviceable malfunctions, while the remaining of the malfunctions may only be correctable with the air compressing system being uninstalled and serviced at an off-board servicing site, such malfunctions constitute off-board serviceable malfunctions. The method allows monitoring responses indicative of a malfunction type that may be associated with at least with one of the following: a corrective action that may be performed onboard the locomotive, and a corrective action that may only be performed off-board the locomotive.

Abstract: A rotor valve (10) having a rotor seal (34) containing a centrally disposed opening (52) for directing an external pressure (Pe) to a rear surface (35) of the seal for applying a sealing force against a sealing surface (36). A projection (38) of the seal surrounding the opening is disposed within a bore (40) formed in a rotor (14) of the valve. An O-ring seal (44) defines the portion of the rear surface exposed to the external pressure. The rotor may be supported on one end by a bearing assembly (80) and may be open at the opposed end for receiving incoming water. Circumferentially distributed slip-surface plugs extend radially beyond the diameter of the rotor to support the rotor along an interior surface (39) of the valve body (12).

Abstract: A fluid flow control valve having a cam disposed near an opening of a fuel passage. The cam is operable to be rotated about a shaft by the action of a float. As a fluid level in a tank changes, the cam rotates from an open position remote from the opening to a closed position (as illustrated) proximate the opening. A gap remains between the cam and the opening, thereby allowing the fluid level to be drawn down to the bottom of opening. Float has a generally wedge shaped cross-section to minimize the effect of wave action in the fluid.