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
TASC Force Tips: How to Avoid a Dipstick Move in 4L60-E Series Transmissions
This is certainly an issue that you should look into to ensure that your transmission has adequate fluid capacity to live a long health life.
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.
Hydraulics Fundamentals: Shift & Relay Valves
Shift valves and relay valves share a lot of the same duties. This article is one of a series by Sonnax exploring how valves and hydraulic circuits work and what results when they quit functioning correctly.
Hydraulics Fundamentals: Clutch Regulator Valves
Knowing how these circuits work and the slightly different variations that the manufacturers utilize should pinpoint any valve body-related issues
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When disassembling a Toyota/Lexus U660E valve body, pay close attention while removing the pressure switch from the valve body.
Hydraulic Fundamentals: AFL/Solenoid Modulator Valves
Knowing your transmission’s hydraulic circuit — and solenoid circuits in particular — can be very helpful when identifying the underlying cause.
Hydraulics: Converter Limit Valves
This article is one of a series by Sonnax exploring how valves and hydraulic circuits work and what results when they quit functioning correctly.
Tasc Force Tips: Ford E4OD, 4R100
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Critical Wear Areas & Vacuum Test Locations
Tasc Force Tips: Critical Wear Areas & Vacuum Test Locations
Critical Wear Areas & Vacuum Test Locations
