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Registered
1974 450SL (US), 2005 SLK200 (UK)
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230 Posts
Discussion Starter #1
I have taken off my three belts and now I can see what size they are... and they don't match with the FSM. In addition Autohaus only sells one of the sizes that I have taken off my vehicle.

FSM says:

2616726


I removed:

A = not installed on my vehicle
B = AVX10 x 1170 La
C = AVX10 x 1035 La
D = AVX13 x 875 La

One issue is that I have tried and failed to see my engine serial number so I can't be sure which of the three B belt sizes and which of the two C belt sizes I am supposed to use.

So the question is - replace with the same sizes as I removed or try to work out the correct sizes and go with them?

Thanks, Andy
 

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w108 & w107
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63 Posts
I just went through this with my M116 w108. I ended up using 11a1180 for the twin drive belts (belt B?), but if your car hasn't been modified, I'd use the factory spec belt. My local shop measured mine, and gave me the wrong one, then i convinced him to give me the one available that was closest to factory spec one. Turns out the one that was already on the car was wrong, and power steering pump was fully adjusted out, and the tension just wasnt quite there the whole time i've owned it...
The alternator belt seems to have plenty of adjustment on the m116 and m117, so not so critical in my opinion.
 

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Registered
1985 380 SL
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50 Posts
The old classical "narrow" v-belt (9.5, 12.5...) has a slightly different form from the newer AVX belts. The are interchangeable as far as pulley fit but the length designation will be a bit different for belts of the same effective working length. I used to have some technical information this but I don't know if I can find it.
 

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Premium Member
'72 350SL, '85 300D, '98 E320, '19 Subaru Outback (sold '14 GLK250)
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10,071 Posts
I recall that at least one of the belts on my 72 had different belt profile than the later standardized shape. I recall buying aftermarket belts from local auto supply shop that did not fit properly even although length was correct. I ended up buying belts from dealer. They worked fine and actually cost same or less than the Gates (or whatever they were). I would recommend buying from dealer or at least Conti belts that match the MB part number.

By the way Andy, if you have the datasheet for your car, it should show the original engine number. Or dealer should be able to pull it up from VIN.
 

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Registered
1974 450SL (US), 2005 SLK200 (UK)
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230 Posts
Discussion Starter #5
Thanks Graham - I will call the dealer. The MB classic center wanted $150 for the datasheet which is money I could spend on parts instead. :)

Andy
 

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Registered
1973 450 SL
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1,821 Posts
Mercedes-Benz service departments can produce a Vehicle Master Inquiry (VMI) for your car. The engine number and lots of other information is on it. Some dealerships consider the VMI a proprietary document; others will give you a copy.
 

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Premium Member
'72 350SL, '85 300D, '98 E320, '19 Subaru Outback (sold '14 GLK250)
Joined
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10,071 Posts
Too bad about that new $150 charge. The engine number is hard to find and see. Rowdie posted a pic at one time of where it is. I could see it was there, but couldn't read it. I knew the number anyway :) Maybe dealer can give you the number from VIN.
 

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Premium Member
1986 560SL with M120 V12 Engine, 1988 560SL Stock
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9,834 Posts
Data like engine and trans number are available from EPC. $75.00 per year subscription.
 

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Premium Member
1986 560SL with M120 V12 Engine, 1988 560SL Stock
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9,834 Posts
From Dayco

2616832


With corresponding size. Apparently there is some latitude.

2616833
 

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Registered
1974 450SL (US), 2005 SLK200 (UK)
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230 Posts
Discussion Starter #10
Data like engine and trans number are available from EPC. $75.00 per year subscription.
I have the offline version of the EPC. Where in the user interface do I find this option?

Thanks, Andy
 

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Premium Member
1986 560SL with M120 V12 Engine, 1988 560SL Stock
Joined
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9,834 Posts
I have the offline version of the EPC. Where in the user interface do I find this option?

Thanks, Andy
For the online version enter the vin number at the opening screen then click the i circled.

For the off line version if it is available look for Data card or SA data. Not sure I don't have access to the off line version.
2616843
 

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Premium Member
'72 350SL, '85 300D, '98 E320, '19 Subaru Outback (sold '14 GLK250)
Joined
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10,071 Posts
Data like engine and trans number are available from EPC. $75.00 per year subscription.
Maybe that will work with paid version, but back when I had it, it did not work for older cars. Why not try it out for Andy?
 

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Premium Member
'72 350SL, '85 300D, '98 E320, '19 Subaru Outback (sold '14 GLK250)
Joined
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10,071 Posts
I have the offline version of the EPC. Where in the user interface do I find this option?

Thanks, Andy
I also have off-line version, and datacard does not work. It's probably greyed out up in top right part of EPC window next to some other icons.
 

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Premium Member
1986 560SL with M120 V12 Engine, 1988 560SL Stock
Joined
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9,834 Posts
Maybe that will work with paid version, but back when I had it, it did not work for older cars. Why not try it out for Andy?
Well I don't want to be the public EPC info center but if Andy PM's me his VIN I will try this out to see if it works for older cars.

PM me you VIN Andy
 

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Registered
1974 450SL (US), 2005 SLK200 (UK)
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230 Posts
Discussion Starter #15
Well I don't want to be the public EPC info center but if Andy PM's me his VIN I will try this out to see if it works for older cars.

PM me you VIN Andy
PM sent. Thanks roncallo. :) Andy
 

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Registered
'80 450SLC Afro RHD Ikonengold
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2,855 Posts
I could ot find any info on SA codes for cars without WDB or other letters combo before the VIN or roughly 1980 cars and older on offline WIS/ASRA
 

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Premium Member
1986 560SL with M120 V12 Engine, 1988 560SL Stock
Joined
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9,834 Posts
I could ot find any info on SA codes for cars without WDB or other letters combo before the VIN or roughly 1980 cars and older on offline WIS/ASRA
Yes Andy sent me the number I was unsuccessful. I even tries appending WDBBA befor the 44, no luck
 

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R/C107 Moderator
1986 560SL: '84 500SL: '84 280SL 5 speed: other 107s
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31,875 Posts
When I had a subscription I was never successful with anything prior to the 1981 standardized VIN. The EPC already shows WDB so you just enter the 107044122913. That was my '72 VIN.
 

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Registered
1974 450SL (US), 2005 SLK200 (UK)
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230 Posts
Discussion Starter #19
Thanks to roncallo for giving it a try. I called my local MB dealer and all they could find in their system based on my VIN that might be the engine serial number is 11798212029615.

I immediately recognized the first six digits, so breaking this down:

117.982 = M117 D-jet
12
029615 = serial number?

But they were not sure if the last six digits is the engine serial number. However I then asked them what size belts and now they are researching it and will get back to me. LOL. Seems it is confusing for them as well.

Andy
 

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R/C107 Moderator
1986 560SL: '84 500SL: '84 280SL 5 speed: other 107s
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31,875 Posts
1=LHD 2=Automatic transmission. 029615 is the engine sequential number or serial number.
 
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