Was there a "+1" or any notes in the epc on the part you ordered? Quite often if the part has changed and another item is needed in addition there will be a tech note right in the epc or a sub part number under that says "in addition to" or "required for or as of".
SBU reverse lever linkage
The reverse gear linkage on my mog is sloppy to say the least. Turns out the ball/socket joints are to blame. The balls are metal and OK. However the sockets are plastic and have cracked. I could have lived with it as is, but I decided to replace them.
MB provided replacement part 001 991 1422 (The original one is 000 991 5722)
As can be seem from the pic, the new one is totally integrated and I will have to remove the old ball joints and get a coupling nut as the thread sex is wrong.
I am assuming MB changed this as part of ongoing improvement. But before I remove the old balls, I thought I would check in case someone on the forum has encountered this before - perhaps a technical note somewhere ? Trev ?
MB provided replacement part 001 991 1422 (The original one is 000 991 5722)
As can be seem from the pic, the new one is totally integrated and I will have to remove the old ball joints and get a coupling nut as the thread sex is wrong.
I am assuming MB changed this as part of ongoing improvement. But before I remove the old balls, I thought I would check in case someone on the forum has encountered this before - perhaps a technical note somewhere ? Trev ?
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I will ask the vendor.
Found this: I guess I am on the right track as this shows the old and new parts.
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Just got to a PC.This is what I get when I put in your old part number:
![Line art Text Auto part Diagram Automotive window part]()
And the new part number:
![Text Line art Line Font Auto part]()
As you can see, they are defiantly different parts, one is male thread and the other female, IMHO you got the wrong part, but I'm no Merc parts person
Maybe there's an update your vendor knows about that I don't. If you want to PM me your full VIN, I'll tell you exactly which one is the proper one for your truck (providing the data card is in the EPC) though i suspect it's the one that looks exactly like your old one, and you'll know for sure if you have the right or wrong part, but again just IMO you have the part for the different application.
And the new part number:
As you can see, they are defiantly different parts, one is male thread and the other female, IMHO you got the wrong part, but I'm no Merc parts person
Maybe there's an update your vendor knows about that I don't. If you want to PM me your full VIN, I'll tell you exactly which one is the proper one for your truck (providing the data card is in the EPC) though i suspect it's the one that looks exactly like your old one, and you'll know for sure if you have the right or wrong part, but again just IMO you have the part for the different application.
Here's that stock image in a bit higher res, you can see there's two different applications, 305 and 284, I think you need 305 and ended up with 284 if I read your post right. There's also an "up to identity" and "from identity" which is, up to serial number XXXXX and after serial number XXXXX
FWIW when I put your old number in, it does not change up to the new one you received (ie, it doesn't say "replaced by") nor does it say the old one is NLA, again I think they just have you the wrong part.
FWIW when I put your old number in, it does not change up to the new one you received (ie, it doesn't say "replaced by") nor does it say the old one is NLA, again I think they just have you the wrong part.
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Very possible. Sometimes when I order direct from Ma Benz, I give my parts guy a number from the EPC and he says that number has changed to XXXXX, even though my EPC doesn't show that number as a change over, and neither does his, until he goes to order it and gets word from the mothership that it's changed up.
This is why...I'm not a Ma Benz parts guy
Though I'm nearly bald and grey enough to qualify!
That is interesting. It would indicate they have yet another separate database that handles parts. May be a good security reason.Very possible. Sometimes when I order direct from Ma Benz, I give my parts guy a number from the EPC and he says that number has changed to XXXXX, even though my EPC doesn't show that number as a change over, and neither does his, until he goes to order it and gets word from the mothership that it's changed up.
This is why...I'm not a Ma Benz parts guy
I have some sympathy for MB because how long does one support a product ? My mog is already 30yrs old, so I accept that some parts are NLA (like my radiator). However, when a substitute is identified it means someone has done some work in linking the obsolete part with the newer available part. It would be just a small step away to complete that exercise in providing a tech note that spells out the extra steps/parts required so that the substitute can be a complete replacement and note than in the EPC.
Anyway - onwards we go :smile
The vendor confirmed that it was only once they ordered the part that MB came back with the alternative part. And no tech note available:frown
Anyway, it is done without too much trouble.
I had to machine a coupling nut to fit the front ball joint onto the existing shaft. The new part was too long so I cut the thread to suit.
The ball on the lever came off by means of drilling out the swaged back - it has a central dimple so using a 12mm drill I removed just enough to clear the swage and the rest pushed out with no trouble. The hole is exactly 10mm which matches the new parts - good news as I was a bit cynical and expected the worst. I also modified the new part by cutting a slot into the 10mm bolt end. Reason is to be able to hold the bolt still when tightening or loosening the nut. I can well imagine that with time, the nut corrodes onto the bolt and it will then just spin upon loosening.
Removing the ball on the gearbox was not so easy and the trusty old angle grinder had to do its thing ! The problem was then to get the remaining bit out of the lever - rusted, so I had to push it out using a ball joint remover. Once more hole was 10mm - good news. I was then able to fit the shaft using the original coupling nut - this nut has opposite hand threads allowing adjustment of the shaft length without removing anything.
So there it is - job done :smile
Anyway, it is done without too much trouble.
I had to machine a coupling nut to fit the front ball joint onto the existing shaft. The new part was too long so I cut the thread to suit.
The ball on the lever came off by means of drilling out the swaged back - it has a central dimple so using a 12mm drill I removed just enough to clear the swage and the rest pushed out with no trouble. The hole is exactly 10mm which matches the new parts - good news as I was a bit cynical and expected the worst. I also modified the new part by cutting a slot into the 10mm bolt end. Reason is to be able to hold the bolt still when tightening or loosening the nut. I can well imagine that with time, the nut corrodes onto the bolt and it will then just spin upon loosening.
Removing the ball on the gearbox was not so easy and the trusty old angle grinder had to do its thing ! The problem was then to get the remaining bit out of the lever - rusted, so I had to push it out using a ball joint remover. Once more hole was 10mm - good news. I was then able to fit the shaft using the original coupling nut - this nut has opposite hand threads allowing adjustment of the shaft length without removing anything.
So there it is - job done :smile
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