| 摘要 |
A tool is disclosed herein used for removing an injector sleeve from the cylinder head of a diesel engine between the rocker arms while the head remains mounted to the engine block within the vehicle. The devices includes a tap having a longitudinal body has a thread cutting head at one end and an axial threaded bore at the opposing end. A drive member comprises a bolt having a head at one distal end and a threaded shaft body portion. An extraction nut is threaded onto the threaded shaft of the drive member followed by a bearing surface member such as a spacer. A washer having an axial hole sized for movable engagement on the threaded shaft is disposed on the threaded shaft after the spacer. A hollow cylinder or support sleeve having an internal diameter greater than the injector sleeve to be removed and an external diameter less than the diameter of the sleeve bore includes a shoulder member projecting outwardly from the exterior of the support sleeve at a selected point. Moreover, a washer having a center hole is disposed onto the threaded end of a bolt having a holding nut threaded thereon spaced apart a selected distance from the threaded distal end. The threaded distal end of the bolt is inserted into and threadably engages threads of the tap nut so that the bolt is fastened to the tap. The end of the injector sleeve removal tool defining the tap assembly is passed through a hollow cylinder of a selected diameter sized so that the end edges of the tube rest on the surface of the cylinder head surrounding the injector sleeve to be removed. The washer is selected having an outer diameter large enough to provide a bottom surface for resting on the top edge of the hollow cylinder. The holding nut rests upon the top surface of the washer above the hollow cylinder. The head of the bolt opposite the tap assembly is rotated with a tool, whereby the distal end having the tap assembly turns to cut threads into the interior surface of the injector sleeve securing same. The head of the bolt is held in a stationary position and the holding nut is then turned and moved downwardly biasing the bottom surface of the washer against the top edges of the hollow cylinder pulling the injector sleeve upward and out of the cylinder head in order that a replacement injector sleeve can be pressed into place in the cylinder head.
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