8L90 Vacuum Testing
Below are the diagrams for vacuum testing GM 8L90 transmissions. Note: OE valves are shown in rest position and should be tested in rest position unless otherwise indicated. Test locations are pointed to with an arrow. Springs are not shown for visual clarity. A low vacuum reading indicates wear. For specific vacuum test information, refer
Transmission Testing & Repairs: Make Sure You’re Vacuum Testing
Vacuum testing has become a trusted method for identifying valve body problems and verifying repairs.
Critical Wear Areas & Vacuum Test Locations for FORD 6R80/6R100
Note: OE valves are shown in rest position and should be tested in rest position unless otherwise indicated. Test locations are noted with an arrow. Springs are not shown for visual clarity. Low vacuum reading indicates wear. For specific vacuum test information, visit www.sonnax.com.
ZF8HP55 transmission
Sonnax has a set of vacuum diagrams for the ZF8HP55 transmission.
Valve body – GM Gen. 2 6T70, 6T75, 6T80 – Vacuum testing
Critical Wear Areas & Vacuum Test Locations
NOTE: OE valves are shown in rest position and should be tested in rest position unless otherwise
indicated. Test locations are pointed to with an arrow. Springs are not shown for visual clarity.
A low vacuum reading indicates wear. For specific vacuum test parameters,
refer to additional information available at www.sonnax.com.
Sonnax Vacuum-Test Layout – 45RFE
Sonnax Vacuum-Test Layout – 45RFE
TASC Force Tips: ZF6HP19/26/32
In-depth instructions for checking the serviceability of valve bodies.
Vacuum Testing Ford 6F35
From the TASC Force we reprint a series of in-depth test instructions for checking the serviceability of valve bodies.
Vacuum Testing: Ford 6F50, 6F55
From the TASC Force we reprint a series of in-depth test instructions for checking the serviceability of valve bodies.
Vacuum Testing GM 6T70, 6T75
From the TASC Force we reprint a series of in-depth test instructions for checking the serviceability of valve bodies.
Vacuum Testing 6T40, 6T45, 6T50
From the TASC Force we reprint a series of in-depth test instructions for checking the serviceability of valve bodies.
Vacuum Testing Aisin AW TF-60SN, BMW 6F21WA & VW/Audi 09G, 09K, 09M
From the TASC Force we reprint a series of in-depth test instructions for checking the serviceability of valve bodies.
