Author Topic: 230SL clamp reference  (Read 2792 times)

John Betsch - "SADIE"

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230SL clamp reference
« on: December 21, 2019, 15:26:53 »
My '65 230SL presently has a combination of the old style strap and Norma clamps which may or may not be correct where they are applied.  e.g.the air cleaner has a strap clamp which I believe should be Norma.  Every engine bay picture I have seen has a different mix/application of clamps. 

While I have read the clamp description in the Tech Manual, can anyone refer me to or possibly have an engine bay picture of a complete and correct use of the combined clamp types that they can point me to?  JB
JB; 1965 German market SL, Rot Met 571, Summary Code 213 Interior

mrfatboy

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Re: 230SL clamp reference
« Reply #1 on: December 21, 2019, 16:03:45 »
Here are pics of 49er's original engine bay photos of his 250 SL and 280 SL that I use for reference for my car.

As I understand it all the Norma style clamps should have Phillips head screws in them except for the very early 230 SL's which have slotted.  However I have not 100% confirmed this. I look forward to a discussion on this😀

You can see in the photos there are at least 4 different clamps used around the engine bay. 

Heater hoses & Brake booster hose
Power steering hose
Radiator hose
Everything else

« Last Edit: December 21, 2019, 16:28:16 by mrfatboy »
1969 280sl (Aug 1968 build)
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4 Speed

Shvegel

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Re: 230SL clamp reference
« Reply #2 on: December 27, 2019, 17:22:04 »
The power steering return hose uses 2 special quick release screw clamps not used anywhere else.

Pawel66

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Re: 230SL clamp reference
« Reply #3 on: December 27, 2019, 19:27:14 »
They are not similar to those used on the coolant hose?
Pawel

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mbzse

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Re: 230SL clamp reference
« Reply #4 on: December 27, 2019, 20:13:41 »
Quote from: Shvegel
The power steering return hose uses 2 special quick release screw clamps not used anywhere else
Quote from: Pawel66
They are not similar to those used on the coolant hose?
The quick release type looks like this
« Last Edit: December 28, 2019, 16:44:20 by mbzse »
/Hans S

Pawel66

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Re: 230SL clamp reference
« Reply #5 on: December 27, 2019, 20:52:11 »
ok, this is the same one, I think, that is on the coolant hose, isn't it? Just different diameter. Or I am missing something?
Pawel

280SL 1970 automatic 180G Silver
W128 220SE
W121 190SL
G-class

mbzse

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Re: 230SL clamp reference
« Reply #6 on: December 27, 2019, 21:06:29 »
Coolant hose clamp, Beru 9mm width strap.
This type also used on the rear axle for the large rubber bellows.
« Last Edit: December 28, 2019, 16:50:52 by mbzse »
/Hans S

mbzse

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Re: 230SL clamp reference
« Reply #7 on: December 27, 2019, 21:22:33 »
Quote from: mrfatboy
.../...You can see in the photos there are at least 4 different clamps used around the engine bay.../...
Yes..  please note however, the clamp types installed from factory changed significantly sometime in 1969 (280 SL).
The earlier, band type tightened with a twist pin were replaced by C-clamp type with M4 tightening screw. See attached
/Hans S

Pawel66

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Re: 230SL clamp reference
« Reply #8 on: December 28, 2019, 09:52:32 »
Coolant hose clamp, Beru 9mm width strap

I see, thank you!
Pawel

280SL 1970 automatic 180G Silver
W128 220SE
W121 190SL
G-class

ja17

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Re: 230SL clamp reference
« Reply #9 on: December 28, 2019, 15:54:04 »
Some cars originally used that  power steering supply hose clamp below the thermostat housing (in a larger diameter).
« Last Edit: December 28, 2019, 20:27:13 by ja17 »
Joe Alexander
Blacklick, Ohio
1969 Dark Olive 280SL
2002 ML55 AMG (tow vehicle)
2002 SLK32 AMG (350 hp)
1982 300TD Wagon turbo 4spd.
1963 404 Mercedes Unimog (Swedish Army)
1989 flu419 Mercedes Unimog (US Army)
1998 E430
1974 450SLC Rally
1965 220SE Finback