I see we have one real happy guy good work and excellent information. Way to much confusion over transmission parts I recall spending the better part of the morning with a parts man trying to find the k2 and never could with any degree of certainty.

Cheers DB, here's the full list from EPC - initially I sent the parts guy a link to the thread above which helped, however it wasn't until he clicked on the 'spanner' icon (285) did it reveal the list contained below.


http://i225.photobucket.com/albums/d...psfsbluym8.jpg

http://i225.photobucket.com/albums/d...psfhrchrit.jpg

Sounds like the parts guy is a bit of a spanner if he hadn't worked that out before!

Hello folks, Mr Needy again (there is a rationale to this mega DIY, my neighbors are away so going crazy to get everything finished).

Okay, B1 kit on it's way from MB Germany with another 6 liters of ATF and filter.

i wanted to thoroughly check out the vacuum system before replacing b1 just in case modulator valve was on the blink, and..yup may need replacing. The system overall is good, crossover and manifold works as should, everything else holds a vacuum... except one..the modulator. Now this may be a result of tweeking it to soften the change prior to B1 being fitted as detailed above, the problem no is it holds no vacuum at all or very little, question is this correct or perhaps diaphragm punctured?

Black nylon to transmission.

http://i225.photobucket.com/albums/d...pscmmnmub3.jpg

Last question (for today :) is this ball joint supposed to be connected to anything? - it has always been like this so assumed not, the other end connects to injector pump accelerator linkage.

http://i225.photobucket.com/albums/d...pspnfjsdxb.jpg

Thanks all

Usually if there's a little ball joint on an accelerator linkage there's a reason for it! Check in the FSM chapter 30 I'm not familiar with the set up on your car (which ever one this one's about)

I'm having a bit of confusion regarding B1. What exactly is the difference between the B1 that was replaced in the valve body vs the B1 on the front side of the transmission?

Hi bud, K1 and K2 were replaced but B1 removed for identification only, popped the old one back.

Lots of confusion around part numbers, this way I should hopefully get the correct valve replacement.

My thoughts are it's for cruise control, engine is OM606.910 fitted to S124

I was also lead to believe the external B1 was the problem B1 valve?

All three valves are internal, lots of discussion on their individual functions with many reporting success by just changing K1.

tbh, for the work involved and cost of fluid may as well do all three, less than $20 for the set.

It might very well be but in my experience Mercedes doesn't like to do "standard". So if you haven't got cruise control fitted (and it was always like that) then I'd expect to see a different bell crank dangle thang...

...special type for this - special type for that - all related - all awkward - all almost the same but actually quite different...

Just pulled this up on EPC - part is listed with the following note - Only used with Tempomat (cruise control)

I tried this before on EPC but it directs you to microfish system, this time as I backed out (up arrow key) it went into the detail pages, very odd - mind you, EPC can be a bit quirkey to navigate around.

Any ideas on the orange flux capacitor thingy?

Okay, B1 part arrived today from MB, looks like there could be a snag.

Original (still in car)

http://i225.photobucket.com/albums/d...pszajiwttk.jpg

New B1, note part ref number starts '125' - the original looks to be tapered although this could be due to waist giving an optical illusion.

http://i225.photobucket.com/albums/d...psjwldxtk1.jpg

Bumper
 

For Future Location

If we follow the logic of K1 and K2 numbering being different from the packet but same as actual fitted valves, could this be an upgrade?

I would like to think so but the b1 differs from K1/K2 in orientation, plastic part first which would mean a smaller end to accommodate the taper.

Please note I quoted '125 277 7832' its actually '126 277 7832' for the yellow replacement valve.

http://www.benzworld.org/forums/atta...1&d=1285215432

It's not really an urgent job as the changes are acceptable, only now and then taking your foot off the pedal before 2nd engages to you get a small jolt. My 210 does this with 722.6 box so probably not worth trying to eliminate completely.

It's a bit bizarre quoting these MB part numbers which are not even listed.