Vacuum testing is an efficient way to evaluate transmission wear and the effectiveness of repairs. Sonnax pioneered the use of vacuum testing by recognizing that a worn valve or valve body bore can result in incorrect hydraulic pressures, leading to poor performance or failure of the transmission.
See how easy it is to identify the root cause of transmission problems by vacuum testing. Sonnax Tech Specialist Jim Dial explains it all in this short, three-part series. Watch now!
What is Vacuum Testing? Video
Part 1 of 3
Vacuum Test Stand Setup & Calibration Video
Part 2 of 3
How to Vacuum Test Video
Part 3 of 3
FREE Vacuum Test Guides
Sonnax has done all the research for you. Vacuum testing guides show exactly where to test to determine if a valve and bore are worn out.
Valves and common concerns associated with bore wear are clearly identified and described.
Find a problem? Recommended Sonnax parts for successful repairs are listed, along with any required tooling.
Vacuum Test Stand Kit Part No. VACTEST-01K
Start your rebuild right with the Sonnax vacuum test stand kit. It’s essential equipment for accurate, repeatable diagnosis of valve bore wear, and verifying the effectiveness of repairs.Learn More
Frequent, proper vacuum testing can put money in the bank, improve turnaround time in your bays and prevent comebacks. To help keep your vacuum tester in tip‐top shape, Sonnax now offers individual replacement parts:
Other Vacuum Test Tools
For use with the Sonnax vacuum test stand, this test kit is a quick, easy and affordable way to verify the internal sealing integrity of ZF6 Gen. 1 and Gen. 2 and some Ford 6R60, 6R75 and 6R80 solenoids.Learn More
Each plate seals over the entire valve body, leaving ports open at key test areas. Easy-to-follow instruction guides identify valves, symptoms of wear and the right Sonnax parts for repair.
Evaluating test results requires establishing your own pass/fail standards in line with your customer's needs and shop warranty requirements.
Print or download your FREE Sonnax vacuum test data sheet to get started!