John Green can you name this part please.

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Pete49
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John Green can you name this part please.

Post by Pete49 » Sat 30 Jun, 2018 2:44 pm

Well pulled the rocker cover off the LH bank to see what was the cause of the tappet rattle. I had bought the genuine Mercedes tool to adjust the gap as per my manual for the 1978 W116 450SEL model as I have read that the adjusting nut is not 17 mm and using that size will bugger them. Well the previous owner has butchered all the adjusting nuts on this side so now need to replace them. As the RH bank are quiet I'm not game to look at them until I need to.To order them I need the proper name of the part. Yep need all 8 of them. :banghead:
Are the parts the same in the 280E?
Pete
1978 W123 300D Maple Yellow
1981 W123 300TD Classic White (now sold)
1983 W123 280TE Champagne
1975 W116 450SEL Silver blue

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Aegean
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Re: John Green can you name this part please.

Post by Aegean » Sat 30 Jun, 2018 7:48 pm

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Tony From West Oz
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Re: John Green can you name this part please.

Post by Tony From West Oz » Sat 30 Jun, 2018 10:02 pm

8 of them will not be a cheap exercise. Perhaps you can get a sick engine and rat them off that engine. Probably be a lot cheaper.
That does not look like it would a 13mm let alone a 17mm hex.
IS that the right part?
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Pete49
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Re: John Green can you name this part please.

Post by Pete49 » Sat 30 Jun, 2018 11:22 pm

yep its the part Tony and not a cheap exercise. Now to look for an old motor and hope they are in good nick and not been butchered.
Aegean thanks for the help.
Pete
1978 W123 300D Maple Yellow
1981 W123 300TD Classic White (now sold)
1983 W123 280TE Champagne
1975 W116 450SEL Silver blue

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Aegean
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Re: John Green can you name this part please.

Post by Aegean » Sun 01 Jul, 2018 11:03 am

Dave Walton appears to have some used ones if you can't find any.

http://dwautos.com.au/product.php?cid=575&pg=177
W136 170s W186 300b W180 220s W109 6.3 C107 450 W116 6.9 W124 E320 Cab CLK 430
'72 Ranchero GT, Subaru SVX x 4, Subaru Vortex, DKW F89P, DKW 3=6, Skoda Octavia Super, Skoda Felicia Cabrio,
and the odd Porsche, Holden, Tatra, Buick............

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Re: John Green can you name this part please.

Post by CraigB » Sun 01 Jul, 2018 2:04 pm

also on here a long time JG quoted the correct minimum tension for them. On my 280sl one of these wound itself down and i replaced with a used one. JG gave the the tension and put a tension wrench on (after popping off the rocker) with a socket bit and went over them all and found another two that weren't as tight as they should be. And naturally the used ones i put in i checked........... and why I mentioned. I would search for it on here but using a hopeless hospital bedside computer.....see my other thread!
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Re: John Green can you name this part please.

Post by John Green » Mon 02 Jul, 2018 1:09 pm

Pete49 wrote:
Sat 30 Jun, 2018 2:44 pm
To order them I need the proper name of the part. Yep need all 8 of them. :banghead:
32 is a set screw
35 is a ball pin

The threads in them are machined slightly offset so they are very tight to turn, as Craig B has mentioned there is a set tension that they should be. If you have some that are super tight the best option is to remove the rocker arm (another special tool) and use a 6 point socket to adjust so it does not round off.

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Re: John Green can you name this part please.

Post by Pete49 » Mon 02 Jul, 2018 2:56 pm

Thanks for the diagram John. Unfortunately a butcher has been at it with a 17mm spanner and my genuine tool slips as they are rounded off. A friend made the special tool for his M110 motor so I can remove the rocker. I may be able to mill it to a exact size with luck and machine up a tool to do the job unless I can find them somewhere. Thanks too Craig for the extra tip.
Pete
1978 W123 300D Maple Yellow
1981 W123 300TD Classic White (now sold)
1983 W123 280TE Champagne
1975 W116 450SEL Silver blue

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