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#1
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Timing Chain Tensioner Leak at 208k
Timing Chain Tensioner leaks on my E300. Never seen this or have experience. It is the highest point of the leak, not the valve cover.
Is there an o-ring, or do I have to replace the whole tensioner? Advice. Thank you. Jake
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Only diesels in this driveway. 2005 E320 CDI 243k Black/Black 2008 Chevy 3500HD Duramax 340k 2004 Chevy 2500HD Duramax 220k |
#2
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Did you mean to post a picture ?
And exactly what engine do you have ?
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1980 240d , chain elongation, cam marks reference: http://www.peachparts.com/shopforum/showthread.php?threadid=10414 http://www.peachparts.com/shopforum/diesel-discussion/305365-9-degrees-chain-stretch.html evap fin cleaning: http://www.peachparts.com/shopforum/showthread.php?t=156207&highlight=evaporator A/C thread http://www.peachparts.com/shopforum/diesel-discussion/297462-c-recommendations-mb-vehicles.html |
#3
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If it's anything like the 603, there's just an aluminum sealing ring in there. Try tightening the tensioner.
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Current stable: 1995 E320 149K (Nancy) 1983 500SL 120K (SLoL) Black Sheep: 1985 524TD 167K (TotalDumpster™) Gone but not forgotten: 1986 300SDL (RIP) 1991 350SD 1991 560SEL 1990 560SEL 1986 500SEL Euro (Rusted to nothing at 47K!) |
#4
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it's an om606. no picture there isn't quite a point. it's cut and dry.
I'd love to know if it's as simple as tightening the tensioner.
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Only diesels in this driveway. 2005 E320 CDI 243k Black/Black 2008 Chevy 3500HD Duramax 340k 2004 Chevy 2500HD Duramax 220k |
#5
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Looking up pictures of the 606 tensioner, it's VERY similiar, if not identical to the 603, complete with the aluminum sealing ring. Try tightening the big bolt head (tensioner body) and see if the leak stops. If not, you'll want to replace the crush washer.
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Current stable: 1995 E320 149K (Nancy) 1983 500SL 120K (SLoL) Black Sheep: 1985 524TD 167K (TotalDumpster™) Gone but not forgotten: 1986 300SDL (RIP) 1991 350SD 1991 560SEL 1990 560SEL 1986 500SEL Euro (Rusted to nothing at 47K!) |
#6
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That particular seal is very easy to mess up. Tightening is worth a try, but you'll probably end up R&R the tensioner to install a new seal.
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Respectfully, /s/ M. Dillon '87 124.193 (300TD) "White Whale", ~392k miles, 3.5l IP fitted '95 124.131 (E300) "Sapphire", 380k miles '73 Balboa 20 "Sanctification" Charleston SC |
#7
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Thanks guy should I just replace the tensioner all together? if I remove it?
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Only diesels in this driveway. 2005 E320 CDI 243k Black/Black 2008 Chevy 3500HD Duramax 340k 2004 Chevy 2500HD Duramax 220k |
#8
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May as well, cheap enough, and good insurance for keeping the chain tight.
Recently I held an om606.910 tensioner and in comparison with a 602/3 unit, they are similar but have a different depth. I'd imagine the crush washer would interchange but not the tensioner itself
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97 e300d, 78 300Dt, 95 E300d, 94 E320 estate |
#9
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The cylinder head is aluminum. I'd be wary of simply "tightening it some more". If you strip out those threads, you'll be in a world of trouble.
I vote for replacing the seal ring only, and torquing the tensioner to spec. I can look up the spec if you need it.
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1998 E300 turbodiesel America's Rights and Freedoms Are Not The Enemy! |
#10
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Quote:
I'm also not a huge fan of trying to tighten a tensioner in an aluminum head. Sounds risky...
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Only diesels in this driveway. 2005 E320 CDI 243k Black/Black 2008 Chevy 3500HD Duramax 340k 2004 Chevy 2500HD Duramax 220k |
#11
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Cam Tensioner
Quote:
Cheers from Australia Peter |
#12
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If you tighten or re-tighten it with a torque wrench to the proper torque there should be no issues.
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84 300D, 82 Volvo 244Gl Diesel |
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