DEVICE FOR PNEUMATICALLY LOADING PISTON ASSEMBLIES INTO ENGINE BLOCK CYLINDER BORES

摘要

A device for pneumatically loading piston assemblies into engine block cylinder bores. A pneumatic piston loading tool is supported on the engine block by means of a hook hung on the lower pan rail and rests against the side of the engine block. The piston assembly is loaded into a loading sleeve and the projecting end of the piston inserted into the engine cylinder bore with the sleeve against the face of the block. The loading tool is placed in the loading position. A given force is applied to the handle of the loading tool forcing the sleeve firmly against the block. When sufficient force is applied on the handle of the loading tool a microswitch is closed and this actuates a solenoid controlled four-way pneumatic flow control valve to admit pneumatic pressure into a cylinder which actuates a plunger. As the plunger moves outwardly it drives the piston assembly with a controlled force into the cylinder bore. When the pressure or force applied to the handle is released, the flow control valve reverses and causes the plunger to be withdrawn from the cylinder bore.