722.0 B3 (reverse) band adjustment

My 450SLC was starting to slip a little in reverse, especially under load (e.g. up a hill). The transmission was shifting gears very well other than this one area, and the fluid looked clean and at the right level.

The 450SLC uses the 722.0 transmission, which unlike the later models has an adjustable B3 band (which is used for engaging reverse). This was not something I was aware of, but I was able to find threads on various Mercedes forums outlining how people who had similar issues had been able to adjust this band to cure them. I wonder how […]

DS Transmission service

Today I changed the transmission fluid on the DS. I’m glad I did as the colour was a bit more like coffee than a nice clean red. A lot of the members of the aussiefrogs forum swear by Nulon G70 (additive) so I also added some of that to the fluid too. I used a Penrite gear oil, which turned out to be a blue/green colour.

Draining the fluid is easy, there is a hole in the undertray just where the drain bolt is, it is the filling that is harder – you have two options, there is a fill […]