Sheared bolt head off OM606 intake manifold, now what? - PeachParts Mercedes-Benz Forum

Father Of Giants · #1 12-23-2018, 06:21 PM

Quote:

Originally Posted by treetops

I must be missing something, nuts and bolts on a 606 manifold? If you sheared the head off the bolt why couldn't you pull the manifold and then use vicegrips on the threaded shaft left behind. If there's still some 'head' left on the bolt can you drill/cut it off and then pull the Manifold?

You can swap out the SOV leaving the manifold in place by moving the washer bottle out the way. Not as roomy as with the manifold out, but can be done. Please be careful of the torx bolts on the SOV....I stripped one of them over a year ago, which has delayed my SOV replacement for a long while.

It was a PITA to get that bolt out of the SOV. I finally figured out to drill the head slightly larger/deeper than the speed out's diameter I bought from the Orange Box.

Clean the torx bolts with brushes and brake cleaner so you get a great grip on it with the T27. Those bolts are not made of very strong metal and who knows how badly they maybe over torqued from prior service.

I took all of the bolts off and it wouldn't budge, did I miss any? Also it's the very last nut, the firewall and the oil filter housing are in the way.

treetops · #2 12-23-2018, 06:40 PM

There is the bolt underneath the manifold that fixes the EGR tube to a support, If that's not off, then no the manifold wont move. You can only get that one from underneath the car with about 18" of 1/4' drive socket extensions. Ive, umm, lost mine somewhere along the way.

ESchwab · #3 12-24-2018, 04:56 AM

Quote:

Originally Posted by treetops

There is the bolt underneath the manifold that fixes the EGR tube to a support, If that's not off, then no the manifold wont move. You can only get that one from underneath the car with about 18" of 1/4' drive socket extensions. Ive, umm, lost mine somewhere along the way.

There are two bolts. The one that you mention which is a 10mm on my car -- a '98 e300. There is also a bolt that holds a metal O clamp that you access from above. It has a 6mm (possibly 8mm) head. It is quite near the bolt that you get from underneath.

Shrimpblue · #4 01-25-2019, 09:24 AM

Are you sure the SOV is cracked? I read on these forums where someone thought their SOV was cracked but it was the o-rings inside at each end. The thread had detailed instructions and pictures on how to replaced them, if that’s your problem?

Shrimpblue · #5 01-25-2019, 09:29 AM

I just noticed the pictures you posted of the broken bolt. It looks like once the intake manifold is removed, there might be enough bolt left to put a pair of vise grips on. If you can, work it back and forth some and see if it’ll come on out.