I second the power steering pump...I've had that sound from my '75 450sl...the steering box was leaking and the fluid in the PS pump had dropped down well below the appropriate level...barely covering the the filter in the pump. I filled the pump to the fill line and the whine went away.

Thanks for the input guys - I'm planning a day with belts today

I'm so stupid...
 

...I've just killed the engine.

I was checking the power steering pump - just replaced the fluid and filter - re-tightened the utility belt - started the engine and the noise was still there.

Walked back to the key to turn it off and the engine stalled after a loud click.

I knew exactly what it was => Broken camshaft


I've now worked out what I did wrong - I didn't re-set the chain tensioner correctly when I refitted it. I didn't RTFM properly.


Needless to say I'm pretty embarrassed about this.

More information about the tensioner is here =>

http://www.peachparts.com/shopforum/747324-post9.html

As well as in the FSM


I'm a total plonker


http://t2.gstatic.com/images?q=tbn:A...Una9ha0sLPELBP

OUCH! My sympathies old man. I suppose the head has to come off to replace the cam?

Oh no! Whats the plan now? Rebuild or replace?

My guess would be, "Take it to bits":(

Well I hope someone learns from my mistake

The hire car price (that I now need to take everyone on holiday) outstrips the cost of fixing the engine

Still it will keep me busy when I get back - I have something to look forward to

Have you considered something like this? I mean, you do refer to the car as a "pig dog".:P

DOGCARTS & LIONCARTS


p.s., I especially loved the text under the Lion Cart bit.

Nice one Mike - thanks for cheering me up - I'll have another day of kicking myself up the arse and then I'll move on.

I still can't believe that "Mr read the FSM" didn't read it properly himself. I was rushing to get the car back in one piece and missed a crucial crucial point

Just in case there's any confusion to what should have been done =>

http://www.peachparts.com/shopforum/...1&d=1374847443

Did you crunch the valves? One would think so elsewise why would the cam break? Oh no Mr Bill!!!


Off with its head... That's what happens when you rush. Other things happen when you take your time. Like when I changed my M116 timing chain the top end was exposed so long the cams rusted.

Yeah I should have taken a chill pill and not been so quick. Still I don't know how far I would have gotten on that head gasket - I'll never know now - but even so I've made it more expensive to fix. So far the best price for a new cam I've found is 170 euros. I think I'll start asking about the second hand places for a replacement head though - I just hope I haven't nadgered the pistons...

...new chain - new sprockets =>

Time for a M111 with supercharger transplant?

Wow, that is bad.
mr FSM should have asked for more of them :eek:
I could have told you that, it also can kill a om60x.

If you want, I can ask what a used camshaft costs here at the locale Mercedes junkjard.

Carnage
 

Thanks but I think I need a head.

Here are some pictures of the carnage =>

http://www.peachparts.com/shopforum/...1&d=1374921548

http://www.peachparts.com/shopforum/...1&d=1374921548

http://www.peachparts.com/shopforum/...1&d=1374921548

http://www.peachparts.com/shopforum/...1&d=1374921548

http://www.peachparts.com/shopforum/...1&d=1374921548

This bit of the head has been eaten
 

I would keep that cam as a memento.

All kidding aside this really sucks and i feel really bad since you already have one project and need transportation.