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1979-1991 280SE, 300SE, 300SEL, 380SE, 380SEL, 380SEC, 420SE, 420SEL, 420SEC, 500SE, 500SEL, 500SEC, 560SEL, 560SEC
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sinbad2
Dernburg Wagon
Posts: 7
Joined: Thu 07 Dec, 2017 1:17 pm
Model you own: w126

Help

Post by sinbad2 » Wed 26 Sep, 2018 9:22 am

Hi I'm new here and never posted before, but I have been reading quite a bit.
I bought a 280SE recently and had to get the head repaired, it had corroded between a water channel and number 6 cylinder.
Anyway, I have lost the timing chain tensioner parts, and have not been able to get replacements.
Would anybody have these parts and be willing to sell?

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Bartman4800
300 SLR
Posts: 1936
Joined: Fri 10 Oct, 2008 12:10 am
Model you own: w111
Location: Perth WA

Re: Help

Post by Bartman4800 » Thu 27 Sep, 2018 1:47 pm

The chain tensioner is actually a wear part.

Buy a new one, they are not too expensive...


Bart
1963 220 Sb Sedan "Kermit" (Australian Assembly)
1960 220 Sb Sedan "Zum Schlachten" (Early German Assembly, with a torsion bar spring for the bonnet) - Stored in Country WA
1981 Subaru Brumby 1.8 with Weber and 5-speed box "little utie" - Sold to another enthusiast!
2006 Ford Focus "daily driver"
2002 VW Passat V6 30V Station Wagon (SOLD - This car into a money pit)
2011 Kia Sportage "Missus commuter Bus"
2002 Mitsubishi Rosa Bus (converting it to a motor home)

sinbad2
Dernburg Wagon
Posts: 7
Joined: Thu 07 Dec, 2017 1:17 pm
Model you own: w126

Re: Help

Post by sinbad2 » Fri 28 Sep, 2018 11:29 am

Not the chain slide that actually rubs against the chain, the bits that push the tensioner slide.
But if you know the part numbers, I will buy new.

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sinbad2
Dernburg Wagon
Posts: 7
Joined: Thu 07 Dec, 2017 1:17 pm
Model you own: w126

Re: Help

Post by sinbad2 » Sun 30 Sep, 2018 9:49 am

These are the parts I need
Image

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Astro-Benz777
C Class
Posts: 46
Joined: Tue 03 May, 2016 7:40 am
Model you own: w126
Region: Victoria
Location: Melbourne

Re: Help

Post by Astro-Benz777 » Mon 01 Oct, 2018 2:20 pm

As the venerable Bart says, the part pictured is the "Timing Chain Tensioner".
Someone please correct me if I'm wrong because I'm going by memory and am not certain where exactly I'm remembering from but... if I'm correct, the original part allowed the oil which maintains the pressure on the chain via the tensioner (arm?) to flow both ways, so once the pressure in the engine dropped, the oil would flow back out of the tensioner, thus releasing the chain, sometimes giving it enough slack to either slip off or out of place. The new tensioner (an official replacement part from MB) operates the same apart from the addition of a one way valve which prevents the oil running out of the tensioner when no longer pressurized by the engine, this maintains correct tension on the chain even when the engine isn't running.
With this in mind, it is definitely preferable to replace with a new, updated part.

(All of the above contingent on my often faulty memory!)
W126's truly were the last real Benz in my opinion! :occasion5:
FORMER FAMILY:
1989 300SE (W126) Midnight Blue, Blue/Grey Interior (Gearhardt)
1982 380SE (W126) Thistle Green, Tan Interior (Sherman)
CURRENT DAILY DRIVE & BELOVED FAMILY MEMBER
1984 280SE (W126) Thistle Green, Tan Interior (Hilda)

sinbad2
Dernburg Wagon
Posts: 7
Joined: Thu 07 Dec, 2017 1:17 pm
Model you own: w126

Re: Help

Post by sinbad2 » Wed 03 Oct, 2018 6:00 pm

Thanks to everybody, but I finally found a part number and have ordered a new one.

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Astro-Benz777
C Class
Posts: 46
Joined: Tue 03 May, 2016 7:40 am
Model you own: w126
Region: Victoria
Location: Melbourne

Re: Help

Post by Astro-Benz777 » Wed 03 Oct, 2018 7:07 pm

sinbad2 wrote:
Wed 03 Oct, 2018 6:00 pm
Thanks to everybody, but I finally found a part number and have ordered a new one.
The entire timing chain tensioner?
W126's truly were the last real Benz in my opinion! :occasion5:
FORMER FAMILY:
1989 300SE (W126) Midnight Blue, Blue/Grey Interior (Gearhardt)
1982 380SE (W126) Thistle Green, Tan Interior (Sherman)
CURRENT DAILY DRIVE & BELOVED FAMILY MEMBER
1984 280SE (W126) Thistle Green, Tan Interior (Hilda)

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