Valve Body reaming requires quality and accurate tools - the reason for a reaming procedure is damage to the channels due to time of service and their wear-out. Reaming involves removal of the damaged layer of metal and in order to compensate this plungers with larger diameter are used as a replacement. Transmission problems - such as transmission slipping - are often due to damaged Valve Bodies; so reaming (just as transmission solenoid diagnostics or replacement) is a standard procedure for any Valve Body repair specialist either professional or beginner.
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All valves encounter wear issues and defects that occur through the time of running the Valve Body. Built-in valves of the hydraulic unit can be fixed by reaming of the orifices using a special reaming tool. A set of reamers particularly designed for each type of valve bodies is manufactured on high-precision equipment. The reamed orifice gets expanded and requires a sleeve of the appropriate size to be inserted into it. If the damaged orifice cannot be reamed the complete hydraulic unit will need to be replaced. Transmission repair specialists are concerned about quality Valve Body reaming tools and invest in them just as they invest in advanced diagnostics and testing equipment. Reaming tools often come with detailed guides oh how to use them properly. A general advice for remarkable quality is to guarantee a continuous flow of water-soluble cutting fluid throughout the reaming process.