Abstract: An engine brake rocker arm assembly for a valvetrain and operable in an engine drive mode and an engine braking mode. The assembly is configured to selectively open one of first and second exhaust valves in the engine braking mode and includes a brake rocker arm configured to rotate about a rocker shaft, and an engine brake capsule assembly movable between (i) a locked position configured to perform an engine braking operation, and (ii) an unlocked position that does not perform the engine braking operation. A lash setting tool is configured to removably engage the engine brake capsule assembly and move the engine brake capsule to the locked position to enable mechanical lash adjustment while the brake rocker arm is assembled in a valvetrain and the engine brake capsule is assembled in the brake rocker arm.

Abstract: A valve clearance measuring assembly includes a panel having a first side, a second side, a forward edge and a rearward edge. The forward edge is extendable between a valve tip and a rocker arm. The first and second sides of the panel each are planar and orientated planar with respect to each other. A head includes a central member and a pair of arms. The arms extend in a generally same direction with respect to each other to define a space between the arms. The panel is attached to the arms and traverses the space. The forward edge is in static communication with the arms such that the forward edge is in a linear configuration as the forward edge traverses the space.

Abstract: A modular system (1) for checking a valve seat and its associated valve guide in cylinder heads of internal combustion engines comprises a guide and support assembly (10), movable in three directions, which carries one or more electronic gauges (11) and a precentering pin (14) to guide the insertion of the gauge in the valve seat and its associated valve guide, and a tilting table (3) for loading and locating a cylinder head (4). Thanks to the particular structure of a support mechanism (12) connected to the guide and support assembly, the gauge is able to self-position on the valve seat to be checked and to disengage in a checking condition from the guide and support assembly at least in one of the three directions. The tilting table can be adjusted depending on the dimensions and layout of the cylinder head to be checked and includes a swing system (6) to set the tilt of the table as a function of the inclination of the valve seat and its associated valve guide to be checked.

Abstract: A gauge apparatus includes an extension assembly. The gauge apparatus also includes a profile assembly configured to radially extend from an outer periphery of the extension assembly. The profile assembly is configured to reciprocally coaxially travel relative to the extension assembly. The profile assembly is configured to cease coaxial movement in response to making travel-interfering contact.

Abstract: A gauge apparatus includes an extension assembly. The gauge apparatus also includes a profile assembly configured to radially extend from an outer periphery of the extension assembly. The profile assembly is configured to reciprocally coaxially travel relative to the extension assembly. The profile assembly is configured to cease coaxial movement in response to making travel-interfering contact.

Abstract: The present invention provides a method for measuring a clearance (13) between facing surfaces of a first member (11) and a second member (12). The method includes a step (S1) of bringing a pair of probes each having a tip end (14) slightly larger than the clearance (13) into direct contact with the clearance (13) and measuring a separation distance between the two tip ends (14), and a calculating step (S2) of calculating and measuring a clearance value (d1) on the basis of the separation distance between the tip ends (14).

Abstract: Methods and apparatus for setting a lash space between a lost motion piston and an engine valve or other components of an internal combustion engine are disclosed. The apparatus may include a lock nut gauge, a zero setting gauge extending into the lock nut gauge, a lash setting gauge extending into the zero setting gauge, and a bit stem extending through the lash setting gauge. The bit stem may include a bit which is used to rotate a tappet screw that sets the lash. A key extending between the zero setting gauge and a scroll channel in the lash setting gauge may be used to control setting of the tappet screw, and thus the setting of lash.

Abstract: A technique is provided for detecting the surface profile of a seat pocket of a gate valve. An inspection tool is used to detect data at a plurality of points around the bore of the valve. The inspection tool has a sensor that is moveable between a retracted position and an extended position. The inspection tool is disposed within a valve body cavity with the sensor in the retracted position. The sensor of the inspection tool is then extended outward so that it is located within the portion of the bore of the valve having the surface profile to be detected. The sensor is rotated so that the sensor may obtain surface profile data at a plurality of points around the seat pocket of the valve body. The sensor of the inspection tool is connected to a processor-based device, such as a computer. The processor-based device processes the data from the sensor and provides it to a user in a form that is recognizable to the user.

Abstract: A support device for a piston ring comprising a circular support defining a bore having an interior support surface to provide circumferential support to a piston ring. Also disclosed is a kit comprising a plurality of circular supports.

Abstract: The current invention relates generally to a valve recession measuring tool and method for using the same. The valve recession measurement is based upon a measured height of a surface on a portion of the valve relative to a reference plane. The invention operates without requiring the removal of any of the valve rocker arms.

Abstract: A gauge device for measuring the inner diameter of engine related bores comprising a circular body member having a circumferential surface with a cylindrical chamber totally encased therein along a longitudinal axis. A slide pin is housed within the cylindrical chamber which partially extends through upper and lower openings within the circumferential surface. A top flange extends radially from the upper portion of the body member and having a cylindrical dial mount affixed to the front. Disposed equidistance to each side of the top flange is a secondary flange extending radially from the front of the body member each embedded with a magnetic disk. A vertical slot positioned along the longitudinal axis provides the plunger stop means access to the slide pin. A dial indicator means is operatively connected within the dial mount and having a movable plunger extending downward and housed within a spring member which abuts the plunger stop means.

Abstract: The Overhead Tool is designed to take the guesswork out of the critical adjustment of the valves and injectors. It is also capable of sliding across the entire valve and injector train to adjust each valve or injector that accounts for the accuracy of the tool. (For instance, instead of setting the valve or injector according to a recommended range, you can set them exactly to specifications of the particular engine). A feeler gage is inferior to this tool because of the stability and rigidity that allows for the accuracy of this tool.

Abstract: A method and a device for setting the valve lash to a desired value at I.C. engines, including application of a motor driven coaxial double spindle (22) on each valve adjusting screw (18) and lock nut (19) followed by a number of consecutive operation steps comprising: tightening the adjuster screw (18) of each valve (11;111) to a snug torque level (Ts) , open the valve (11;111) by tightening the adjuster screw (18) through a predetermined angle while checking the torque magnitude required therefor, reverse the adjuster screw (18) through an angle exceeding the previous predetermined angle, re-tighten the adjuster screw (18) to the snug torque level (Ts), reverse the adjuster screw (18) through an angular interval corresponding to the desired valve lash, and tighten the lock nut (19) while holding the adjuster screw (18) stationary.

Abstract: A measurement platform for an overhead cam shaft type internal combustion engine having at least one piston reciprocable within a cylinder formed in a block; an intake valve and an exhaust valve for the cylinder, wherein intake and exhaust cam lobes on the cam shaft engage upper ends of respective intake and exhaust valve stems, the platform comprising at least one relatively rigid bridge component including a pair of mounting flanges at opposite ends thereof, the mounting flanges having fastener holes aligned with fastener holes in the engine head on opposite sides of the cam shaft, the relatively rigid bridge having a plurality of holes therein adapted to support one or more measuring devices adapted to engage the intake and exhaust cam lobes on the camshaft.

Abstract: A measurement platform assembly for degreeing a camshaft of an internal combustion engine having at least one piston reciprocable within a cylinder formed in a block, an intake valve and an exhaust valve and respective intake lifter and exhaust lifter associated with the cylinder, the tool comprising a plate having plural holes sized and arranged to permit fastening of the plate to the engine block via bolt holes in the block; the plate mounting three gauges, one of which is adapted to engage the piston and two of which are adapted to engage respective substitute exhaust and inlet lifters, the gauges adapted to measure movement of the piston and substitute exhaust and inlet lifters as the camshaft rotates.

Abstract: An apparatus for simultaneously measuring the thickness of a bottom wall and the inside diameter of a bottoming hole. The apparatus includes a measurement auxiliary unit; a measurement head removably mounted at a lower end portion of the measurement auxiliary unit, the measurement head having an outside diameter fittable in a bottoming hole of a workpiece such as a tappet; a nozzle, provided in the measurement head, for jetting outward a compressed air supplied from an air micrometer; and an electric micrometer, provided over the measurement auxiliary unit, for detecting a vertical displacement of the measurement auxiliary unit.

Abstract: An engine is provided with hydraulic valve lifters and other valve train components, wherein the invention consists of a tool which utilizes the engines existing valve train components to determine if the correct adjustment is present to provide for the proper clearances of the hydraulic valve lifters. Several embodiments are disclosed, including gauge only embodiments and embodiments which include adjusting and gauging functions.

Abstract: A tool arranged to receive a rocker arm of an internal combustion engine to direct the rocker arm to displace a valve and thereby permit measuring of such linear displacement is provided. The tool is arranged to include a first wall mounting a handle, and a second wall having a rocker arm receiving surface to effect rotation of the rocker arm about its fulcrum, with an abutment rod arranged to engage the valve assembly in its displacement.