[W126 Coupe] Camshaft replacement

[Andrew Sporner]

I see you took magic in the spirit intended ;-)

I had a price here of EUR 1500 to do this and was advised not
to do it on account of the value of the car itself.

I am rather torn on this---but if I figure I do anything to the motor
it is something
that can be salvaged into another car later if the body is too far gone.

Ideas?


Andy

On 6/24/08, Pete Williams <hwilliamsjr2 at cox.net> wrote:

> Andy,

> Cam timing marks are already there. There is a lot more "magic" involved. At

> least two special tools, spring compressor and offset hex head wrench. Don't

> try to just get by. There is the danger of the threads coming out with the

> bolts. Half of the bolts go into the head, half are head bolts entering the

> block at approximately 1-1/2 degrees off perpendicular. Get all new rockers.

> You'll need at least an oiler kit, very inexpensive. It'll be a good time

> for a timing chain and tensioner if they haven't been replaced in recent

> memory. If you do end up with tread problems, then you'll have to be a

> magician to master all of the "magic" involved. Make sure no washers, bolts,

> master links, or loose timing chain ends fall into the engine where the

> timing chains enter. Remove the plugs for easy engine rotation. In case the

> chain jumps on the other head, it's best to remove all of the rockers. If

> you do decide to do it yourself, there are a lot more "tricks" involved but

> there are a lot of magicians on this forum to help you. It's all possible

> and can be very rewarding, but there can be a lot of frustration too.

> Good luck,

> Pete Williams

> 1972 350SL 4.5

> 1983 500 SEC AMG

> 1984 500 SEL (parts)

> MBCA, Central Oklahoma Section

>

> -----Original Message-----

> From: mbcoupes-bounces at mbcoupes.com [mailto:mbcoupes-bounces at mbcoupes.com]

> On Behalf Of Andrew Sporner

> Sent: Tuesday, June 24, 2008 2:54 AM

> To: Mercedes Coupes Mailing Lists

> Subject: [W126 Coupe] Camshaft replacement

>

> I am told that the right camshaft needs to be eventually replaced

> (makes a clacking sound when the motor is cold and their are grooves

> on one of the cams)  They tell me that the car can go up to 50K Kilometers

> more without problems -- or die next week.

>

> Can anybody suggest the level of difficulty.  I am not foreign to working

> on cars (rebuilt the motor on my 1976 Ford mustang -- though admittedly

> I sent the top-head away to get remachined).

>

> I suppose you just have to mark the gears on the timing chain and just

> replace?  Or is there more magic involved?

>

> Andy

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>

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