[jdeitch]

I just completed the reseal of the 722.3 trans in my 1987 300D turbo. I also replaced the engine rear main seal. The new flywheel bolts I got from Mercedes Benz are different than what came out. The original bolts are 12-point 12mm. The new bolts are t50 torx. Are these upgraded bolts? Superseded part? What torque setting do I use? Is the locking plate from a newer model now required? Thanks in advance for your prompt/helpful reply. Hoping I have the right parts. Really need to get this all back together asap. I only want to do this job once, correctly.

 

[plinker17722]

You need to question mercedes about this . I had the same problem on the front disc replacment job that i did with hub to caliper
bolts .The ones i took out were shoulder bolts, ie not threaded right up to the head of the bolt . But new ones were threaded right up to the bolt head , and no support on the bolt as threads make it weak in that area. But i was told mercedes had superseded them .

 

[gatorblue92]

I would check with your dealer since I think the bolts on the left are for the auto flexplate and they are stretch bolts. The ones on the right look like the manual flywheel bolts.

 

[jdeitch]

I would check with your dealer since I think the bolts on the left are for the auto flexplate and they are stretch bolts. The ones on the right look like the manual flywheel bolts.

I total agree with your statement regarding the appearance of the bolts. I purchased these bolts prior to removing the trans and did not have mine to reference. I was assured they were the correct bolts when I ordered them. VERY frustrated. I attempted to order everything in advance so the car would be down the least amount of time. Now I'm stuck trying to figure out these bolts. I was hoping someone here had experience with this issue.

As far as checking with my local dealer, I will not be going back there unless absolutely necessary. I went there in person to order these bolts. I was in my military uniform. I was literally ignored and pushed to the side when a glitzy Barbie doll chick wanted to purchase a rhinestone key ring for her new MB. When the parts guy finally got around to helping me, he totally treated me like a second-class citizen and even rolled his eyes when he had to look up the parts.

I would sincerely appreciate a recommendation to a good internet source of MB parts.

Thanks,

Jeffrey

 

[M-Cedes]

The T50 Torx are what's on my spare 104.995 flex plate, so I'd say they are the updated part. Can't imagine they would use different flex plate bolts between an M104 and an OM?

 

[jdeitch]

I went ahead and installed the torx T55 bolts. Torqued to 45nm + 90degrees. I used blue loctite too.