Saturn VT25E CVT Transmission

Pictures I took of a saturn cvt I rebuilt recently. If you have one of these transmissions, and your'e from the Houston and surrounding area, then we can help. Go to my channel to find out more.

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Continuously Variable Transaxle (CVT) Operation
Weber State University (WSU) - Automotive Technology Department - Transmission Lab. GM Continuously Variable Transaxle (CVT) model VT25. How a belt-driven CVT Works. Ford, GM, Honda, Chrysler (JATCO), and Nissan CVTs are similar. CVTs allow the engine to operate at the RPM for peak efficiency while increasing and decreasing the transmission drive ratio to change vehicle speed. This video helps satisfy NATEF Task A2.C.23. "Describe the operational characteristics of a continuously variable transmission (CVT)", a priority 3 task. eCVTs are different and are demonstrated in another WeberAuto video. Download the VT25 Range Reference Chart here: hart.pdf This video was created and edited by John D. Kelly at WSU. For a full biography, see Visit my other youtube channel to see the amazing NVH app for vibration diagnosis!

Repair cvt VT25-E/VT20-E, Saturn, Opel. Demonstrated inside the repair of variator VT25-E/VT20-E (continuous variable transmission: CVT), mounted on car Saturn Vue 2,2l 2002-2005 and Ion Quad Coupe 2,2l 2003-2004. Also installed on the car Opel Signum 2004-2007 and the Opel Vectra C 2004-2007. Ремонт вариатора VT25-E/VT20-E. Saturn Vue, OPEL.

How A CVT Works by TEAM
TEAM has received a lot of requests to explain how a CVT works, here is a good video showing the basics of CVT. In the future we will be posting more videos explaining some of our innovations to the basic design. Take a look and let us know what you think.

The driving shaft VT25-E/VT20-E. wmv The driving shaft. Piston forward is one of the weaknesses in the variator (CVT). Major failures because of it. Rubber deposited by curing on a metal part of the piston - hardens and loses elasticity. Height (thick-ness on) a rubber bumper is only 5 mm, and height of the cylinder in the fixed part of the cone leading shaft is also small. During compression clutch forward, the piston is so out of the cylinder, which creates oil leak on the outer circumference of the piston. Reduced contact area between the piston and cylinder. Falling oil pressure ball valve on the piston does not have time to close. Piston periodically presses, the press clutches. And as a result is obtained: 1. Twitching of the time away. 2. Wear of the friction, they simply burn out. Increased clearances and there is a metal ring. 3. Of clutch friction material are particles that fall into the oil block of solenoid and a valve, which causes them to malfunction - jamming valve (plunger). 4. Wear surface of the cones. 5. Wear metallic belt. 6. Crushing balls in the slots. 7. Chips in the slots themselves driving and driven shafts. 8. As a result - jamming mobile cones. 9. And later breakage of the metal belt. 10. In the torque converter divides the overrunning clutch.