News

4L60E transmission rebuild manuals (700R4)Information about rebuild 4L60E (700R4) transmissionIn the early 90s there was a problem of development of a heavy-duty automatic gearbox, which could be used in the Hummer cars equipped with the powerful petrol and diesel engines. A principally new four-speed automatic transmission 4L60E was developed, which got a reinforced hydro block and a special pump’s design that allowed in a high-quality way to ensure engine lubrication. To ensure high-quality transmission’s lubrication solenoids channels were significantly increased. This required the use of updated and enlarged in size solenoids. It should be noted that certain functions of modification...

722.9 Transmission ProblemsFrictions of the 722.9 can often get broken. You can get broken valve body, if you use not high-quality oil or if you drive very aggressive. Solenoids and body itself are very sensitive to hot temperature. If there in oil will be some of shavings, the automatic transmission fast gets overwarm and get out of work. That’s why you need to change oil, regularly. Less seldom you can get problems with the impermeability of gaskets. Anyway you will get leakages of oil and the automatic transmission won’t get enough of oil. If you have this modification you should...

Despite the automatic gearbox has many automatic electronical controlling systems, Mercedes 722.6 is a very reliable transmission. But if you get big problems with it, the cost of reparation will be very high. This automatic transmission has requirements for oil – it should be high quality. Producer recommends to change oil every 40 000 kilometers. If the car owner won’t do it, then he will get problems with work. The sign of it is a strong jolt, while shifting gears.

You can get often problems with planetary gear set, which breaks. Then you should repair Mercedes 722.6: take out the automatic transmission and change not working details. Now this problem is cleared, and next modifications of the transmission don’t break so easy. One more problem you can get is a weak spring in the valve body. In this case transmission lubrication starts to work not so well and further it leads to big problem of the automatic transmission.