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K1, K2 & B1 accumulator spring kits

89K views 99 replies 23 participants last post by  LeftCoastGeek  
#1 ·
OK....I took an actual picture of the K1 accumulator spring kit to the dealer with the PN clearly visible. I found the pic archived here on this forum. Not only couldn't he find it, but the PN showed up as a partial part for a AMG tranny. Non of his parts breakdowns did anything inside the valve body, so there was nothing from his screen to order. He even went back and talked to the 'tech people' in service...nada.

I just need the K1, K2 & B1 kit PN's and a knowledgeable MB part's dealer who can get these. '92 300TE 4matic wagon. Anybody help with this?:confused:

Kevin
 
#4 ·
This was my understanding....but since I've had a complete lack of cooperation with parts houses on this...including one in Europe, I can't say with certainty. I'm waiting for the weather to stabilize and then I'm going to start 'the hunt' again. allmercedes.com never answers emails, so I thought I'd call them on this matter. They are one of the last places that I haven't connected with.

Kevin
 
#5 · (Edited)
strange, why cannot a MB pusher find it? I recon they have a part catalog for every model, like BMW has realoem.com

Is b1 clutch or is it a spring kit aswell, and where is it located?

anyway, if you still need the p\n for k1 it is:
(I bought this from my locale dealer, and it cured flare from 2-3, so I need k2, for flaire between 3-4, and hopefully the tranny is back on track again)

Image
 
#6 ·
strange, why cannot a MB pusher find it? I recon they have a part catalog for every model, like BMW has realoem.com



anyway, if you still need the p\n for k1 it is:
(I bought this from my locale dealer, and it cured flare from 2-3, so I need k2, for flaire between 3-4, and hopefully the tranny is back on track again)

Image
Depends on your dealer/personnel etc. Here, I can't even get the K1 kit with the pic you included. In his EPC, they show no breakdown like that from the tranny metering block. Using that part# , they come up with something for the AMG cars. If your dealer there is at least familiar with the K1 kit, push harder for the K2 and B1. Let me know what you find out; because these kits can literally same the tranny from rebuild for quite awhile.:thumbsup:

Kevin
 
#8 · (Edited)
B1 is a spring accumulator as well. Let me see if I can attach some pics:

Bear in mind that even armed with these pics, I can't seem to go forward with an order. Lot of difference between a mediocre counter jockey and a mechanic. (K1 & K2 are at opposite ends of the same metering chamber.) This is so frustrating and so ignorant on the part of the counter people, that I try not to think about it most of the time. This is so incredibly simple, I don't understand the issue.

Kevin
 

Attachments

#9 ·
I went to my local dealer with that part number and I know they called it something like a "pin"...I can't remember this was last year. It was not named a kit. I would try calling a different dealer -- I can tell you for sure the part # is correct as that is the picture I used to get mine at my local dealer. Probably just "over-the-counter-monkeys" you are dealing with.
 
#11 ·
Doesn't matter here...there are no "different dealers". I would have to drive 3 1/2 hrs over the mountains to a "different dealers". You urbanites just don't seem to understand the nuances of living in a small town.:rolleyes:

I took that same, tired exact pic of the K1 package all blown up, easy to read and nada. So like I said originally, I have to find someone at a part's house who knows what the hell he's capable of ordering from MB.

Kevin
 
#14 ·
Who then....only Porsche for the 500E and AMG for the Hammer back then. Are you saying that back in the day the transmissions were outsourced and arrived back to the plant to be installed on the 124 cars? That's a theory I haven't heard of yet.....that would explain a lot. Except that you can buy aftermarket accumulator spring kits on the Net for the 123's.


Kevin
 
#18 ·
I don't know if they are different rates or not....the Net choices for 123 transmission accumulators do give you spring rate choices. If you read the threads where people have replaced the accumulator springs, often there is a broken spring or damage which would explain the flared shifts.

In any event, it's cheap investment to replace the three kits. K1, K2 and B1 each address the different shifts; 1-2nd, 2-3rd & 3-4th. Yeah, it's definitely "possible"....I just need a resource.

Kevin
 
#19 ·
Be careful if you fit spring kits for all shifts, some of the shifts may become too firm and to back off the modulating pressure to compensate will make it flare from take off. It is a balance.

I would just replace the shift that is flaring, if you are lucky 2-3. I think for others the box needs to come out.......
 
#20 ·
Agreed, but that's why I was saying that if you find broken springs (common), you can go back with the same rate. I have flares from 2-3rd and from 3-4th. Given my mileage, I probably need a new/rebuilt transmission.

Reading up on the 123 owners and the different spring rates they used; they almost always went back to less aggressive rates than what they initially thought would work. I also read where they replaced K1, K2 and B1 to find their transmission shifting like new again. My hope is to get in there and find some broken pieces.

Kevin
 
#23 ·
I just went through 20 pages on EPC that were related to the transmission...using my VIN#. I'm at the same brick wall my dealer was; no internal metering block parts shown that run longitudinally with the MB, i.e., K1, K2, B1.

It's going to take a Mercedes person familiar with this and somebody that's successfully ordered before. Maybe there's some supplemental catalog of parts, or some such shit....but I'm not seeing it in the EPC.:(

Kevin
 
#22 ·
You can try getting a different dealer to ship it to you. My dad got his kit last week from Mercedes of Mission Viejo, CA so maybe give them a call? They got them in stock still I believe.

Pic of kit:
Image


"thrust pin" -- that's it!! Best of luck.
 
#24 ·
Kevin,

Does EPC show the parts as applicable when you don't use your VIN? I recently solved a problem on my S500 and EPC said the part didn't exist on my car. Went to the dealer, EPC said the part didn't exist on my car. Pulled the steering wheel and replaced the non-existant part, problem solved...
 
#25 ·
Hey Jim....you mean just go into EPC and do it by my yr and model # alone....or are you talking about doing it for an earlier yr? It's great if you pull a part and it has a p/n on it, but that won't help with accumulator springs. So how to your get the steering wheel part...was there a p/n on it?

Sometimes the same parts are listed in earlier yrs and they just quit listing them later on...that's tricky though because the 'unit' has to remain pretty much unchanged. I would think in the case of the 4-sp tranny, that wouldn't be an issue....although it shows the 4matic tranny unit as a separate subgroup....:confused:

Kevin
 
#32 ·
Back off your Bowden Cable 2 1/2 turns. Do nothing else. See what difference if makes. Should stop you from having to lift off to get the old girl to change up. It's a good start.

I have spent a year on and off adjusting my 722.5 box. It has done 200,000 kms and has not been rebuilt at all. It is smooth and changes just when I expect it should. Best features are the kick down when going down hill to help with braking and the kick down to 4th for a bit of a Yahoo. It really can be adjusted to be smooth before you need to have it all rebuilt.

Once you have the changes happening at the right place then we can see if all gear changes are flaring by adjusting the Modulating pressure. I think you might find it is only 2-3 that flares (hopefully) and needs those springs. That's all mine needed except for the fine tuning adjustment.........
 
#36 ·
Boyd,
ARRRRG! Yeah, "no problem" when you get a dealer to cooperate and know what they are doing. What are the chances of me sending you some money and postage....cause I don't see it happening any other way. However, now that you posted the pics with #'s, I can approach that Euro dealer again....hmmmm.

Kevin
 
#39 · (Edited)
Don't know. I sent a email to the Euro dealer and he can get the K2 and the B1 like in Boyd's pic, but not the K1 (now that he has pics with p/n's). The K1 I can get probably through the right dealer here.

I just sent another email to the Euro dealer asking him to cross the kits he has with my 722.342 tranny and see if they are correct....if he can.

Kevin
 
#40 ·
Boyd/ Inspector,
The Euro dealer said that those kits will only fit the 722.414 series tranny....not mine. He also said that MB last fall, put a ban on selling OE parts to resellers. I would assume that carries over to the States as well.

So except for getting the K1 kit get from a US dealer, I'm back to square one.

Kevin
 
#41 ·
Looks like many of these transmissions are out there.
MODEL.............. YEARS.... CHASSIS... ENGINE... ....TRANSMISSION
E300................ 1994-95... 124.230... 103.985 KE ...722.342
300E 4MATIC..... 1987-93... 124.230... 103.985 KE... 717.4/722.342
300TE 4MATIC... 1987-93... 124.290... 103.985 KE... 717.4/722.342

How about MBUSA, don't they consider these a classic at 20 years? They have a special group that is supposed to help with classics: 1-866-622-5277 Mercedes-Benz - Home of C, E, S, CLS, CL, SLK, SL, R, GLK, M, GL, G Class - Heritage - Classic Center

Per their website:
Classic Car Parts and Accessories
The Classic Center is your source for nearly 40,000 spare parts for classic Mercedes-Benz vehicles - from major assemblies like transmissions to small individual parts for virtually any need. Each product is made to Mercedes-Benz specifications and backed by the same factory limited warranty (12 months, unlimited mileage) that covers parts for brand-new Mercedes-Benz vehicles.
We can even access your vehicle's original build sheet and other archival data, free of charge. It's all part of the exceptional customer service you've come to expect from Mercedes-Benz.
Please have the following information available when you call: model, model year, and vehicle identification number (VIN).
 
#42 ·
I'll try them, thanks. I still have to try allmercedes.com...they never answer my emails. I just need to take the time off and call around. Weather is getting better here and I'm planning a looong trip to the South in early May. It would be nice to get some of this stuff knocked out first.:rolleyes:

Kevin
 
#47 ·
Thanks Boyd...that would be great! Fortunately with these spring accumulator kits, the usual 500% MB mark-up does not apply.....there's just not that much to them.

My chassis number is:124.290
My tranny number is: 722.342

As I stated, the Euro supplier is a reseller and cannot get factory OE parts in theory......although he has two of the kits you bought for you diesel box. At this point he's probably annoyed with me and all the queries since last fall.... I would prefer to go another route.

Kevin
 
#45 ·
I think what you are after Kevin, if I am not wrong, is a spring kit to cover up flare you are getting with gear changes. If you are not getting flare when you take off from rest but are getting it on all up shifts then you should consider adjusting the modulating pressure and not bothering with the spring kit. If you put a kit in all gears then you will probably find you need to back off the modulating pressure to not have hard shifts, but you may very well find resulting flare when moving from rest.

If you are getting it on 2-3 only then you should consider the spring kit mentioned previously. If you are getting it equally on 2-3 and 3-4 then maybe this can be improved by adjusting the modulating pressure. My understanding is that the parts in the kit are not standard parts, they have a different spring rate that will change the way the box shifts making the flare less likely. Nobody from MB will help you fit non standard parts to your car. Fitting a standard spring kit to the car will not change the way it shifts appreciably, your box is worn and needs attention other than the spring kit.

I have fitted a kit to the 2-3 shift, as I had flare just starting to develop on 2-3 only. I spent approx a year on and off adjusting both the modulating pressure and Bowden cable to compensate for a heavier spring – my box was not quite worn enough. Between the two I now have the box shifting very close to perfect, BUT I can only just feel the shift 2-3 over that of 3-4 due to the spring kit. I did not need to replace more spring kits ( if I did it would have been box out to fit them at which point it is better to rebuild the box) it is possible to tune the box so the combination of a harder shift spring kit and softer factory spring shift are very nearly impossible to detect. Maybe the 2-3 is wearing out more now coming into the firmer kit range nicely.
I think the fix with the kits is something owners and mechanics came discovered/came up with, it is not a MB sanctioned repair method, that’s why it will be impossible to formally get the up rated spring kit numbers for your box from MB – not unless they know about your problem and know exactly what to fit to your box and don’t mind recommending it to you as a favour.
I take it you have looked closely at vacuum leaks (=harder shifts generally) and other issues the box may have. Isolate and sort these first.
If all else fails, The Classic Centre in Germany will rebuild your box from about 2500 euro.

Mercedes-Benz Classic - Spare Parts - Overhaul of Automatic Transmissions

It really will be good as new!!
Let us know how you get on...........
 
#46 · (Edited)
Dude...I know most of this already from researching. Somehow you must have missed the point about needing a rebuild. Yes, the box needs rebuilt, no I don't have two grand right now to invest in a car that is worth possibly less than that. I'm sentimentally attached to the car because I'm the original owner. However, I'm not stupid and feel like funneling money into a dark hole. My restoration has been gradual over the yrs and the tranny is one of the last things before I move on to paint and finish. I'm looking for a band aid that will extend the life of the tranny a few more yrs or until I lose reverse etc. At that point, I may rebuild it myself.

I have equally delayed shifts until the car is really warmed up and then late rpm shifts after the car is thoroughly warm. I can fool with the Bowden cable adjustment some more for sure. I can also fool with the modulator, but using test gauges you can nail it better than 'a turn here, a turn there'. The reason I'm after the spring kits first, are due to all the pics I've seen of high mileage transmission accumulator springs that are broken or fragmented. But you're correct, I don't have the usual 2-3nd flare.

But......I should be able to buy factory, spring rated accumulator kits and that I cannot seem to do. My idea was to renew those, then the Bowden and the modulator adjustment. I may have no choice other than to attack the Bowden and modulator at this point.
 
#50 ·
Hmm, I wish it was so Kev.:(
I bought these kits after searches re a slipping 4th gear on my wagon.
There was never any great issue with flaring until now and the 2 kits didn't help so there must be something internally wrong.
Got a replacement organised if I need it but currently trying a bottle of LUCAS. You never know :confused:.
At the moment all I get in 4th is free revs.
LUCAS might sort seals or swell bands, I'll report back soon as poss.
Some say it takes up to 2 weeks to work its magic.
Need your full chassis no for the stealer (pm me?)

Boyd :)