Rebuilding/Upgrading 722.643 with 722.649 parts
Once the K2 drum was able to be separated. I discovered who ever owned this car previously burned all the clutches so bad they was no clutch material left. They were badly misshapen and locked onto the OD planet and scored it something awful and you can see. Rear planet gearing was missing it's O-ring and chewed it up.
O.D. Planet and K2 clutches are on the list now for replacement along with many o-rings and seals.
Here are the parts needed for Trans Repair if someone else finds theirs has failed in this manner:
O-rings / Gasket Sets
K2 clutch set
B2 clutch set
O.D. Planet
Worn K2 Piston and Spring Retainer
OEM part Numbers with retail pricing
Product Description / Price
Filter
Part Number: 140-277-00-95
$12.40
Nut
Part Number: 140-990-11-50
$5.20
Ball Bearing
Part Number: 140-981-01-25
$24.80
Needle Bearing
Part Number: 140-981-23-10
$16.80
Needle Bearing
Part Number: 140-981-22-10
$13.20
Needle Bearing
Part Number: 140-981-12-10
$5.20
Needle Bearing
Part Number: 140-981-05-10
$6.00
Axial Needle Rlr Be
Part Number: 220-981-26-10
$9.60
Freewheel Unit
Part Number: 211-270-00-31
$40.00
Pilot Bushing
Part Number: 203-540-02-53
$12.80
Hoop Freewheel
Part Number: 722-270-00-31-64
$47.20
Transmission
Part Number: 140-270-65-00
$113.60
Oil Pump
Part Number: 722-270-01-97
$488.00
Planetary Carrier
Part Number: 722-270-18-43
$376.00
Spring Retainer
Part Number: 220-272-05-64
$14.80
Piston
Part Number: 140-272-23-31
$45.60
Disc Spring
Part Number: 140-993-10-26
$8.40
End Disc
Part Number: 221-272-17-26
$29.60
Inner Disc
Part Number: 221-272-00-25
$23.60 each
$94.40
Outer Disc
Part Number: 221-272-23-26
$23.60 each
$118.00
Outer Disc
Part Number: 220-272-22-26
$27.60 each
$165.60
Inner Disc
Part Number: 240-272-02-25
$23.60 each
$141.60
Outer Disc
Part Number: 221-272-19-26
$18.80
Disc Spring
Part Number: 220-993-00-26
$7.60
The key to this job in my humble opinion is to stay organized
Thanks all for your input and driving this along!
So call me OCD
I took it all apart again and pretty much decided to replace all the clutch packs.... I mean why not I am going to be in there right?
Last edited by BoostedAero; May 24, 2017 at 10:34 AM.
K2 piston (#30) and Spring retainer (#40) got chewed up a little. <br/><br/><br/><br/>The K2 clutches were bare metal and very thin, so thin that they more than likely flexed under load then locked onto the rear planet. The rear planet is pretty scored up and basically is trash.<br/><br/>So yea the previous owner drove this trans until it just quit and locked down into limp mode
This guy is hosed up pretty bad in the pics I posted, you can see lots of horizontal lines where there should only be vertical ones
The Best of Mercedes & AMG
I had one earlier this year that had a needle bearing come apart and completely destroyed half of the parts. Had to end up using a different core to build it was so bad
Last edited by knowbenz; May 25, 2017 at 11:53 PM.
I had one earlier this year that had a needle bearing come apart and completely destroyed half of the parts. Had to end up using a different core to build it was so bad
The list so far:
B1,K1,K2,B2... may as well just order a B3 (even if it is only used for reverse)
F1,F2 Sprags
Gaskets, Seals, O-rings, Needle bearings
Torque Converter (debating on R&R mail off or just getting a reman)
Currently On Hand:
New Conductor Plate
2x new filters (1 for 100 mile post install flush)
New Pilot Bearing
14 quarts of Shell 134
I just need to push the button that says "empty checking account" lol
Last edited by BoostedAero; May 26, 2017 at 12:18 PM.
My plan was to do the hard part first (what I am up to by remanufacturing the trans to as new spec. ) then if not resolved buy the above order a modded SHP VB
With basically the VB as the only used part on there I could isolate it rather easily if it emits the symptoms I am seeing now on my known good but slipping transmission. 2,3,4 engage but it is a few millisecond delay until full engagement.
Symptom 2 There are flare shifts as well under light load where it feels like it just spins then changes gears....
i probably should split the two halves of the VB and then super clean it as to not have junk causing all my issues with current trans (engagement then delayed fulll clutch lock down-then you accelerate)
these symptoms are under partial load, I can drive it really slow and mask they symptoms
I appreciate your's and everyone's input.
gotta crash, night all
My plan was to do the hard part first (what I am up to by remanufacturing the trans to as new spec. ) then if not resolved buy the above order a modded SHP VB
With basically the VB as the only used part on there I could isolate it rather easily if it emits the symptoms I am seeing now on my known good but slipping transmission. 2,3,4 engage but it is a few millisecond delay until full engagement.
Symptom 2 There are flare shifts as well under light load where it feels like it just spins then changes gears....
i probably should split the two halves of the VB and then super clean it as to not have junk causing all my issues with current trans (engagement then delayed fulll clutch lock down-then you accelerate)
these symptoms are under partial load, I can drive it really slow and mask they symptoms
I appreciate your's and everyone's input.
gotta crash, night all







Looping this one across as well as it has some valid info for upgrading these transmissions with more clutch packs, process and parts needed to get it done.
It is looking like at this point I am going to rebuild to factory spec as it has more than enough to get the job done.
I apologize for the delay of those reading as I was "engaged" in other financial matters that took a higher priority than my transmission parts...
Let the rebuild continue!
Last edited by BoostedAero; Jun 5, 2017 at 11:36 AM.
I looked at the coffee cans I had but was afraid they would collapse, $12 at lowes for a 6" pipe drain cover (cut the top off) and a I think a 3 or 3.5" pipe coupler worked great after some time with my abrasive table saw
The press worked out great so you can have the springs pushed in and work with both hands for what its worth
F1 ( 21.39mm ) A722-270-00-31
F2 are all the same but mine has the part number of A220-270-01-31
I could go to the later gen larger sprag but would have to replace more parts, kinda just in get it done mode
Waiting on
More fluid ( I swapped valve bodies just to try and see if the one I put sonnax control overlap kit in solved the issues, it didnt)
Snap Rings (larger on B1 and B2 to get clutch gap on the smaller end of the spec)
Pump Plate
Intermediate plate
Rear Planet
New Sprags
Rear Main seal
Than I can start soaking some clutches for final install... the end is near
Last edited by BoostedAero; Jul 7, 2017 at 08:34 AM.
211-270-00-31
Replaces: 140-270-05-31, 220-270-01-31, 722-270-01-31




