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Valve Body Testing Unit

Valve Body test units serve to transmission shops as advanced tools for diagnosis of this complex automatic transmission part. The aim of any unit placed in this section is in finding the exact source of problems within a Valve Body by comparing its performance against the benchmark data. Used transmissions and rebuilt transmissions require guarantees of high quality of transmission rebuild and this involves Valve Body repairs. The systems implemented capture pressure and current values, allow drawing charts for easy visual perception and do many more than that to advance any transmission rebuilding business to a newer standard of quality

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Valve Body test machines allow transmission specialists to run a series of checks to test performance of a malfunctioning Valve Body unit at various speeds and different pressure inputs. If put simply, these machines emulate performance of transmission of a driven vehicle. Equipment manufacturer’s teams write scripts of testing for particular transmission models that the Controller system reads issuing commands to the machine itself. By running a used Valve Body through a set of carefully elaborated steps and reading outputs the system makes a graphic that is compared to the one taken from an original new Valve Body of the same model. This comparison makes it possible for Valve Body Rebuilders to determine the exact source of the problems - it can be a damaged solenoid, a worn-out valve or a plunger that needs replacement. Modern VBT machines come with simplified quick fit hose connections; high spec operational PC systems; touch screen monitors; pre-written test scripts compiled by experienced "hands-on" valve body rebuilders and other great features. Back up support service and general tech support are provided in various forms and some companies - especially the UK manufacturer - strive to excel at it.

Related articles

The Go4Trans Team is happy to present to you part 1 of the 2-part research over the testing methods of TCMs / mechatronics units.

This part 2 is a conclusion to our 2-part insight into the Transmission Control Module / Mechatronics Units testing.

The valve body is a hydraulic “controller” (also called as a “transmission brain”) consisting of valves, solenoids, sensors batteries and attached to them are passages and channels, which guide the flow of ATF to various valves with the purpose to activate required clutch and shift the gear properly according to the driving situation.


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