Shift Pointers: Mazda Sensitive to Pressure
A Mazda with the “SKYACTIVE” FW6A-EL transmission uses pressure switches to monitor the clutch application. When engagement pressure is supplied to the applicable clutch and brake, the oil pressure switch contact point closes. The TCM detects that clutch engagement pressure is supplied to the clutch/brake by opening/closing the oil pressure switch contact point. There have
Transmission Testing & Repairs: Make Sure You’re Vacuum Testing
Vacuum testing has become a trusted method for identifying valve body problems and verifying repairs.
2015 Land Rover Evoque is Stuck in Park!
The shifter knob would come up out of the console and allow the driver to move it from Park to Drive once, then freeze in the Drive position.
The Long and Winding Road Test
The tale of a hot RE5R05A
The Future of Heavy-Duty Truck Transmissions
Jason Morgan is the editor of Fleet Equipment (Transmission Digest’s sister publication). He recently wrote about the state of the heavy-duty transmission market as it pertains to fleet operators. He says that the automated manual transmission (AMT) and automatic transmission manufacturers are crushing assumptions and setting new expectations in all trucking industry applications. Automatic transmissions
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.
Another 62TE ‘No-Move’ Possibility
Most seasoned techs have several quick diagnostic steps they take when faced with a transmission malfunction. The type of problem and transmission determines which steps to take. For example, a “no-move” condition. If it is a fresh install, the most obvious diagnostic step is to know how much fluid it took. If it only sucked
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
It’s the Little Things That Matter
Whenever a transmission fails to work correctly after a rebuild, a small error like cross-connecting speed sensors can cause a major headache. It does not take much to correct this error if you know it occurred, but when you do not, a small error turns into a giant monster. Without a doubt, when it comes
Transmissions & Oversized Tires
How Changing Gear Ratios Helps Prevent Drivetrain Damage
