Hey. This spring seems to be NLA and I would like to replace mine. Needs to be shipped to Finland.
Thanks
Timo
Thanks
Timo
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WANTED WTB: Oilpump Spring A1161810793
- Thread starter timpurister
- Start date
Timo, why do you replace that spring? is it broken, worn, lost.... I'm just curious.
There is nothing obvious wrong with that spring, it is just that it has been there for 28 years and 280 kmi. I am in the middle of a full restore, all engine parts are out so it is easy to replace now. I have new oilpump + chain and so on, that spring is missing. My plan is now to take the spring to a technican who can produce these and make at least 10 so that if someone needs in the future, I can share. The cost of that spring has been 4 euros once it was available, it would kind of upset me to put the old one back there.
I had actually two timing chain guides broke and to be able to change the lower ones, the resto project was needed.
I had actually two timing chain guides broke and to be able to change the lower ones, the resto project was needed.
I can't recall seeing any discussion about that spring here before, so thanks for the clarification.
On a general basis are spring steels aging as any other steel material, so all springs will theoretically weaken over time. But it is hard to predict an exact lifetime, it depends on how much it is loaded and how much engineering is put into the design. However, it doesn't hurt replacing it.
On a general basis are spring steels aging as any other steel material, so all springs will theoretically weaken over time. But it is hard to predict an exact lifetime, it depends on how much it is loaded and how much engineering is put into the design. However, it doesn't hurt replacing it.
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I would first
Look at availability with other M119 and M117 versions to see if it is available there (say 210 and 129 models from 1995-1997) and then to see if there is another part that could be a substitute say from M104, M113, etc.
For reference of others, and as a general rule for these types of discussions and requests, it would be very helpful to post a photograph + diagram of where the spring goes in the engine so that people here have an idea of what you are talking about.
Visual descriptions, diagrams and photos always are worth 1,000 words. And it might help someone here spark an idea for a solution.
Look at availability with other M119 and M117 versions to see if it is available there (say 210 and 129 models from 1995-1997) and then to see if there is another part that could be a substitute say from M104, M113, etc.
For reference of others, and as a general rule for these types of discussions and requests, it would be very helpful to post a photograph + diagram of where the spring goes in the engine so that people here have an idea of what you are talking about.
Visual descriptions, diagrams and photos always are worth 1,000 words. And it might help someone here spark an idea for a solution.
I was not able to find this as OEM part but was able to find a spring manufacturer to produce me some. So now I have a set of ten of these if anyone ever needs one. Spring is as the OEM but the material thickness is 1mm and in original it is 0,8.
Hi. Did you resolve this problem ? Did you produce new springs ?
Yes, I did and I made some extra in case some else needs them.
I am in need of one. I work at a import shop in texas and we are rebuilding a 83 380SL for a customer and ours has broken. Having the same issue everyone else is. Would love to know if you still have any available? thank you
Let me come back to you by midweek, currently travelling. I am pretty sure I still have some.
Timo
Timo
Thank you!
I have a spring for you. I tried to send you a private message but it failed since there is a limitation on the forum for new members. Let me know if still interested and we can then figure out how to get it to you.
Timo
Timo
Hey Arnt. I'll send you an PM once I have the spring in my hand. Currently travelling.
Timo
Timo
Hello Timo,
I saw your post on 500Eboard about the reproduction of the oil pump chain tensioner spring (A116 181 07 93).
I am restoring a Mercedes R107 with an M117 engine, and I urgently need this spring.
Could you please confirm if you still have some available.
Thank you very much for your help!
Best regards,
@timpurister @Arnt, @gerryvz,
1) To be clear. What is the purpose of this spring 116 101 07 93 -Item 101?
2) Does it apply tension to the timing chain guide - Item 104?
3) Can the spring be accessed from the bottom of the engine with the oil pan removed?
3a) I guess that would also apply to the lower timing chain guide?
Yes, the spring clip provides a relatively constant tension against the oil pump drive chain rail. Not the high level of tension required by the full timing chain, because the oil pump drive chain is very short, has a very defined path, and is only driving a single sprocket.
Yes, the spring and oil pump chain guide are accessed by removing the large front timing cover of the engine. I believe the bottom of the chain and sprocket can also be accessed by removing the upper and lower oil pan components, but I'm not 100% sure if the rail and spring can be accessed here. The @gsxr will know for sure.
As far as I know (I have never done this), the lower timing chain guide rail can only be accessed by the full front timing cover of the engine being removed. This is a major job that is best done with the engine out of the car, though it is certainly possible to do it engine-in.
Yes, the spring and oil pump chain guide are accessed by removing the large front timing cover of the engine. I believe the bottom of the chain and sprocket can also be accessed by removing the upper and lower oil pan components, but I'm not 100% sure if the rail and spring can be accessed here. The @gsxr will know for sure.
As far as I know (I have never done this), the lower timing chain guide rail can only be accessed by the full front timing cover of the engine being removed. This is a major job that is best done with the engine out of the car, though it is certainly possible to do it engine-in.
I am restoring a Mercedes R107 with an M117 engine, and I urgently need this spring.
Could you please confirm if you still have some available, Thanks
Looking at this post that I did some time back on replacing the oil level sensor: HOW-TO: Replacing M119 Oil Level Sensor | "HOW-TO" Tutorial Articles
It looks like the oil pump chain tensioner and spring WOULD be able to be accessed if you removed the lower (steel) oil pan, and also the upper (aluminum) oilpan housing. You can clearly see the oil pump sprocket and chain from the images that I posted at the link above, but you can't get to the tensioner itself with just the lower oilpan removed.
ALTHOUGH, looking at the factory service manual job for replacing the oil pump, it does look like the spring is accessible with just the lower pan off. Hmm.....see attached.
Hi Timo, do you still have the spring? I need one for M117 engine.
Thank you.
Hey
Can you send me email to timo at mb124.org . I am not able to send you private messages. I have some springs left but I want to take pictures to you so that you'll see what you get.
If you are located in Canada, shipping is ok I think, But need to verify that.
I need to get back to the spring maker, this is now getting alot of interest. Maybe he could do a secound round.
Timo
I received one of these springs from Timo and the quality is superb, slightly thicker than the factory spring and fitment was perfect.
Timo, if you do another round I would probably purchase a few as I have 5 m116/117’s and 7 M119’s lol. While most of the current springs are fine, I would hate to not have them in the future. You saved one of my M119’s with this spring!
Timo, if you do another round I would probably purchase a few as I have 5 m116/117’s and 7 M119’s lol. While most of the current springs are fine, I would hate to not have them in the future. You saved one of my M119’s with this spring!
Thanks for your kind words Evan. I will order another round of these springs, the guy is currently busy but will do them late this year or early 2026. I will then do a "part for sale" posting so it will reflect better than this current one. Hopefully our leaders will by then agree on customs etc since currently it is not possible to ship anything to US.
Timo
Timo
The spring just arrived, it looks fine! 
It will likely be a longer time to I need this spring, so it goes into long term storage. To preserve it against corrosion I brushed it with an abrasive cloth and wrapped it in an oily rag and into a sealed bag.
Cudos to Timo for making this spring available to us here!
It will likely be a longer time to I need this spring, so it goes into long term storage. To preserve it against corrosion I brushed it with an abrasive cloth and wrapped it in an oily rag and into a sealed bag.
Cudos to Timo for making this spring available to us here!
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Hi. Can you send me email to timo at mb124.org and we can take it offline. I have two springs left so next one who is in need, just needs to wait for the next round - hopefully early 2026.
Timo
Timo
