Does anyone have a 4.4i Transmission Valve Body schematic, torque specs, etc...

[Johnny_5]

Ive been having issues with intermittent jerking from 1st to 2nd mainly on cold morning starts and appears to go away sometimes during warm up. Im sure its the valve body or fluid. I have a spare valve body Im thinking of tearing apart and rebuilding but need the break down / torque specs, etc on it. I may try swapping out the fluids and filter but just in case would like to have a spare rebuilt set as Ive been told changing the fluid at my high mileage can possibly cause more issues. Ive also read some success stories so figured its worth a shot. My other option would be to get the tranny software update but is that something I can do or does it have to be dealer?

Any help or advice would be greatly appreciated.
Thanks in advance

[williamx5]

Good day!!

I tore down my valve body a while back... About 3/4 down on this page is the start...

https://xoutpost.com/bmw-sav-forums/...roject-12.html

I don't think I ever found a torque spec for the valve body itself... I just used the M6 bolt torque... Plus or minus a smige probably won't matter... 8.8 grade M6 bolt is 9Nm... 10.9 grade (doubt they are this, but) is 13Nm...

You can do the software update if you have a laptop and cable.... and I used NCS Expert... It didn't correct my issue... HOWEVER!! I would just swap out the solenoids on the valvebody and change the fluid with LG6... If that doesn't get it, then consider the software upgrade... Might be better to have the dealer do it if you don't already have the set-up, or know someone with the set-up...

Good luck!!!

Cheers!!

[Johnny_5]

Originally Posted by williamx5

Good day!!

I tore down my valve body a while back... About 3/4 down on this page is the start...

https://xoutpost.com/bmw-sav-forums/...roject-12.html

I don't think I ever found a torque spec for the valve body itself... I just used the M6 bolt torque... Plus or minus a smige probably won't matter... 8.8 grade M6 bolt is 9Nm... 10.9 grade (doubt they are this, but) is 13Nm...

You can do the software update if you have a laptop and cable.... and I used NCS Expert... It didn't correct my issue... HOWEVER!! I would just swap out the solenoids on the valvebody and change the fluid with LG6... If that doesn't get it, then consider the software upgrade... Might be better to have the dealer do it if you don't already have the set-up, or know someone with the set-up...

Good luck!!!

Cheers!!

Thank you for the reply. Wow you definitely had your hands full with everything. Nice thread and amazing work.

Did you end up changing the solenoids on there as well or did you just pretty much tear it down and cleaned it? I do remember you changing out the seals but wasn't sure if you changed anything else on there? Any tips?

[williamx5]

Originally Posted by Johnny_5

Thank you for the reply. Wow you definitely had your hands full with everything. Nice thread and amazing work.

Did you end up changing the solenoids on there as well or did you just pretty much tear it down and cleaned it? I do remember you changing out the seals but wasn't sure if you changed anything else on there? Any tips?

I didn't change out any solenoids this go around... I pulled it apart and cleaned everything... Reassembled and reinstalled with the new "known problem seals".... Unfortunately it didn't correct my issue... I have read that many reporting errors with 1-2 shifts replace the solenoids to correct the issue... Mine was working and shifting perfectly until it heated up... This is a notorious issue with the Bosch unit attached to the valve body... I swapped it, but I could not get the programs to take and operate the replacement unit... I had the vehicle for over a year at that point, so all the perfect parts were pulled and dispersed to the other X5's in the stable...

I went super slow with the disassembly! Mainly due to unfamiliar with what to expect... Spring tension and valve orientation... IF you do pull the valve body part, get the NEW separator before you start... There are at least two versions!!! I also filled the trans in four stages...

**Initial - fluid cold - engine off...
**Started and ran for a second, then off - fluid topped - fluid cold...
**Then started and left running - fluid warming - fluid topped - plug replaced... Moved shifter thru gears several times... engine shut down...
**Allowed to cool fully (fluid over full)... Started and ran until trans temp was in range (monitored with INPA), pulled fill plug and allowed to drain until a slow trickle... replace plug... It is difficult to do with no dipstick tube...

Good luck!!!

Cheers!!!

[jcp240z]

Look up the member RPhil. He rebuilds the transmissions as a hobby. Many different posts by him here and on the Jag, RR sites (same tranny). Much info
.