Mercedes 722.8 Archives - Transmission Digest
Keep Your Eye on the Ball

If you have had the opportunity to work on a 62TE transmission, you may have noticed nine checkballs in tapered pockets that are held into place with C clips (Figure 1). In our seminars we explained that these balls are used during an assembly-line check with a special tool that pressurizes their respective circuits. Once the tool is removed these balls become plugs. Apparently this procedure was more economical when compared with the cost of providing typical pressure taps. But what this means to you is that these balls must be checked to ensure that they are in their location and that they are sealing. Otherwise you could be fighting a variety of different complaints.