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Old 03-16-2002, 09:25 PM
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Thumbs up M117 Timing Chain Completed

Well, sort of. I got it rolled in and the camshaft timing is right on the money. I've still got to do upper rails. I borrowed the proper tool to hold the old and new chain to the cam gear and does that ever make it easy.

The question I have is: Do I use the two c clips supplied with the chain or do I peen the ends of t he master link?

Sholin

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What else, '73 MB 280 SEL (Lt Blue)
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Old 03-17-2002, 12:56 AM
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Sholin,

I had the same question when I rolled the chain in the 560. I couldn't find a crimpable master so I used the "C" clips. Just make sure the open end of the "C" is trailing so they cannot be knocked off should the chain rub against something.

I also did the upper rails before rolling in the chain (makes use of the slack of the old chain ). You'll have to pull the tensioner and the left cam sprocket to access the lower guide. Be sure to mark the chain and sprocket so they go back together correctly.

Keep us posted.
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'73 280SEL 4.5 (9/72)- RIP
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Old 03-17-2002, 07:16 AM
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Talking

Yeah, I can see how the upper rails would be easier before the new chain is rolled in. I'll get it, but I don't want to exercise the c clips more than I have too. I've got the tensioner out, so I'm on the way.

I'm not sure the new chain is up to the same standards as the old chain: c clip instead of endless, formed rollers instead of seamless. I did buy it from a dealer. The old one was really worn out. You can see where the pins are really polished.

This also gives me the opportunity to replace all accessory belts and spark plugs.

Hey Mike, could you brief me on how you extracted the pins? I'm going by Home Depot today to pick up some washers and the correct bolt.

sholin
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Old 03-17-2002, 11:34 AM
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Well I used one of the removal tools which was a block and puller pin. You can make something similar with a deepwell socket and a long 6 mm bolt with a stack of washers. If the bolt is long enough you can also use a nut to exert the pulling force. Thread the nut on the bolt all the way up, then slip on a couple washers and insert through the socket. While holding the contraption together thread the bolt into the pin, once threaded in strat running the nut tight against the washer, should pull the pin right out.

Without the nut, you get the bolt threaded part way in the pin and tighten up until snug. Remove the bolt, add a few washers and repeat until the pin comes free.

Hope this helps.
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Mike Tangas
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72

'02 CLK320 Cabriolet - wifey's mid-life crisis

2012 VW Jetta Sportwagon TDI...at least its a diesel

Non illegitemae carborundum.
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Old 03-17-2002, 02:45 PM
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That's where I'm heading. I've got the correct bolt, washers, and deepwell socket. I've still got to remove the PS pump and move it out of the way. I'll be done with this PDQ.

BTW, this is a job that requires good thread chasers. The pins get alot of grime in them and the job is easier if you chase the threads first.

Sholin

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