Here's the results of the adaptation values in STAR!
according to STAR, "if the filling time and shift time are at the adaptation limit, the adaptation values of further gearshifts may be increased."
"If the adaptation values are reached, this indicates a fault in a hydraulic shift element."
"If the filling pressure adaptation values limit is in positive display range, there is damage in the automatic transmission."
Lets get the theory straight
Not really theory, but practice in using this info from STAR which is beneficial from outside the transmission.
Any positive number is "wear percentage". When the transmission is new(made well, or gaped correctly at the friction packs) the wear value when new will be "0
". As the transmission accumulated mileage increases if you are lead foot driver. The increases at a faster rate. The cap is "15" which is very wide, but the critical clutch packs are K3 and B1. Now, B1 is reading negative. i have no clue why, but every 722.6 I have opened B1 has a large gap in the frictions-meaning wear of friction material. This is normal of any 722.6 transmission... B1 is for the early gears, and K3 is for mid to late gears, but K3 will start to grind away the inside of the K3 housing with excessive wear, and that I have seen a few times... Here is something on it:
What I would do in your case
A) I would pull the valvebody down, and see how malleable the o-rings are on the shift solenoids and torque converter(TC) solenoid. I know the TC solenoid will be brittle hard, but the others I have no clue, and they must fit a little tight not just fall in the hole, and those o-rings Mercedes DOES NOT SELL THEM
B)I would lift out the black regulation solenoids out and clean out the screen filters, or replace them(Mercedes sells the screen filters). See the pictures from this post...
C) My guess is your regulation solenoids(The black ones) are getting tired too, and they are about $250 each
, yet in your shoes. I would find a late model +2000 722.6 car(any S, SL, C, CL, etc...) at the junk yard, and buy that used valve body with solenoids, and that may set you back $100.00 or less. Swap the whole thing out...
Row52 | Search Results
The used valve body may be worth your gamble...
D) Do inspect the conductor plate speed sensors with a magnifier for hairline cracks that the naked-eye cannot see as you may be on the onset of a worn-out conductor plate too..
E) Check your shifter bushings too...
I would do that first over anything of replacing/rebuilding