I need a 12point 17mm spline socket to remove the chain tensioner from a M103 engine. I have been everywhere and know one has it. I live in the Philadelphia Pa area any suggestions would be great. Thanks in advance. Car is a 91 e300te 4matic wagon

George

Sears or Harbor freight

Sears does not have this tool keep in mind it is not a 12point socket that is 17mm it is like a torque but is a male end not female like a socket.

g, are you looking for the triple square socket or the driver?

I guess it would be the driver! If you are removing your chain tensioner it would be after you take out the plug you remove the spring and then you are left with a nut that has 12 indents to except a 17mm 12point spline driver. Thanks for your help just stuck and cannot find tool. George

You say you need a male, but the photo depicts a female.

I haven't been into this part of the motor, but out of curiosity, went searching for a 17mm triple square male.

The largest size I found was 16mm and that was at Snap On. If they don't make a 17mm, I doubt it exists.

Are you sure this fitting is triple square and not torx or allen?

See the following thread.

m103 chain tensioner tool

__________________
Mike Murrell
1991 300-SEL - Model 126
M103 - SOHC
"Fräulein"

It is the plunger retainer ring and a 17mm allen fits..

http://www.samstagsales.com/images/hz985-17.jpg

SAMSTAG sells a better tool than what I'm about to suggest, but if you're pressed for time, Auto Zone sells a set that includes the 17mm allen.

__________________
Mike Murrell
1991 300-SEL - Model 126
M103 - SOHC
"Fräulein"

If you'r stuck, just stick a 17mm bolt in there with a couple of double nuts on the end so you can just use a 17mm socket to drive the bolt head...
or, better, just weld a bar/handle at a right angle on a 17mm/2" long bolt and you have the tool

I got mine from Auto Zone, they are the 3 pieces set for about $10.00.

Jack