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#1
12-03-2017, 03:33 PM
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Video/audio of 617 diesel sounding like rocks in a washing machine.....
I can hear the sound more predominantly when I'm in front of the radiator. Strangely, after the car is driven for an hour or so, most of the rattling subisdes.....
https://www.youtube.com/watch?v=gW_QyTg2pZI&feature=youtu.be 
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#2
12-03-2017, 09:38 PM
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Listen to where you think the noise is coming from with a piece of broom stick, large screw driver or a mechanics stethoscope with one end applied to the area you think the noise is coming from and your Ear or Ears on the other end.
Check the Vacuum Pump area first because if the parts of that fall into the Engine it can take out the Engine.
__________________
84 300D, 82 Volvo 244Gl Diesel
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#3
12-03-2017, 09:39 PM
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It sounds like a bad alternator. I can also see the belt slacking every so often. Test by removing the alt belt(s). If the sound is gone, you know what to do.
__________________
 All Diesel Fleet 1985 R107 300SLD TURBODIESEL 2005 E320 CDI (daily) LOTS of parts for sale! EGR block kit http://www.peachparts.com/shopforum/diesel-discussion/355250-sale-egr-delete-block-off-plate-kit.html 1985 CA emissions 617 owners- You Need This! Sanden style A/C Compressor Mounting Kit for your 616/ 617 For Sale + Install Inst. Sanden Instalation Guide (post 11): http://www.peachparts.com/shopforum/diesel-discussion/367883-sanden-retrofit-installation-guide.html
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#5
12-04-2017, 10:01 AM
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It is a new alternator. Can a loose belt cause the alternator bearings to wear? I'm going to adjust it today.....do I need to loosen all three mounting bolts before turning the tensioner?
Last edited by HuskyMan; 12-04-2017 at 10:16 AM.
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#6
12-04-2017, 10:35 AM
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I doubt they'd suffer any appreciable wear since the alternator is new. The loose belts alone can create a heck of a racket on a V-belt system. Try tensioning the belt and see where that gets you.
__________________
Current stable: 1995 E320 157K (Nancy) 1983 500SL 125K (SLoL) Gone but not forgotten: 1986 300SDL (RIP) 1991 350SD 1991 560SEL 1990 560SEL 1986 500SEL Euro (Rusted to nothing at 47K!) Gone and wanting to forget: 1985 524TD 167K (TotalDumpster™) [Definitely NOT a Benz]
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#8
12-04-2017, 10:57 AM
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Quote:
__________________
All Diesel Fleet 1985 R107 300SLD TURBODIESEL 2005 E320 CDI (daily) LOTS of parts for sale! EGR block kit http://www.peachparts.com/shopforum/diesel-discussion/355250-sale-egr-delete-block-off-plate-kit.html 1985 CA emissions 617 owners- You Need This! Sanden style A/C Compressor Mounting Kit for your 616/ 617 For Sale + Install Inst. Sanden Instalation Guide (post 11): http://www.peachparts.com/shopforum/diesel-discussion/367883-sanden-retrofit-installation-guide.html
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#9
12-04-2017, 01:07 PM
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just pour water over the belt first and see if it quiets
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#10
12-04-2017, 03:57 PM
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I'm only see one of the alternator belts flapping. My guess is they aren't a matched set (from the same manufacturing batch #).
I've ran across this same problem when replacing belts in the past. It's due to the tolerances in manufacturing.
__________________
Sam 84 300SD 350K+ miles ( Blue Belle )
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#12
12-07-2017, 05:36 PM
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Last evening I adjusted the drive belts for the alternator to 1/2" depression using my hand as a check gauge. Started the car this morning and the clacking/clicking sound is GONE! YES!
Thank you to everyone who posted and helped out on this one! I'm planning on purchasing the tension gauge for more accurate measurements though.........
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