Pagoda SL Group

W113 Pagoda SL Group => Drive train, fuel, suspension, steering & brakes => Topic started by: timjshanahan on April 20, 2023, 05:31:37

Title: heater hoses, tachometer mounting clip, radiator re-core
Post by: timjshanahan on April 20, 2023, 05:31:37

Hello group, I am in the middle of re-coring my radiator (manual trans) and will be replacing all of the hoses related to the radiator and heating systems. My 69 280SL has been off the road for many years and I don't know what I need and what is missing. I have two pipe fittings coming out from the firewall, which I think are the heater connections. Can someone tell/show me what I need to buy/find in order to get these pieces properly installed. BTW, it is a non AC car.

I also noticed the tachometer cable that connects to the distributor is free flowing and looks like it should have a connection at the throttle linkage. I'm sure I'm not describing this properly.

Lastly, the re-coring of my radiator is quite expensive($800), so I wanted to make sure I have the needed replacement hoses so that I'm not replacing them, one at a time.

Thanks for your knowledge.

Tim

Title: Re: heater hoses, tachometer mounting clip, radiator re-core
Post by: WRe on April 20, 2023, 07:23:01

Hi,
Yes,  the two pipe fittings coming out from the firewall are the heater exchange connections.
If you look here https://www.sls-hh-shop.de/main/en/mercedes-230-280sl-w113-/50-cooling-system/50-c-cooling-system-280sl you'll find all necessary hoses, even a set of hoses. You should check the rubber grommets in the firewall too.

Attached a picture of the tacho connetor at the engine. A clamp at the brake booster fixes the cable.
...WRe

Title: Re: heater hoses, tachometer mounting clip, radiator re-core
Post by: timjshanahan on April 20, 2023, 13:04:11

excellent thanks for the reply. I will have to see a pic of the clamp near the brake booster. As far as I can tell, the grommet in the firewall is no longer present or has fallen behind the firewall.  The car is in the shop at the moment, so I will figure out the hoses first and then install the radiator. THX again Tim.

Title: Re: heater hoses, tachometer mounting clip, radiator re-core
Post by: 49er on April 20, 2023, 22:14:16

Hi Tim, Since I also live in El Do Hills, you are more than welcome to stop by and have a look at my car for reference to any questions you might have. You can message me using the forums PM link.

John

Title: Re: heater hoses, tachometer mounting clip, radiator re-core
Post by: WRe on April 21, 2023, 06:02:37

Quote from: timjshanahan on April 20, 2023, 13:04:11

I will have to see a pic of the clamp near the brake booster.

...WRe

Title: Re: heater hoses, tachometer mounting clip, radiator re-core
Post by: timjshanahan on April 21, 2023, 13:57:55

perfect, thanks WRe.

Thanks to everyone on the board, this is a great group.

Tim

Title: Re: heater hoses, tachometer mounting clip, radiator re-core
Post by: rwmastel on April 21, 2023, 15:51:05

Is that clip on the brake booster a 280SL thing?  I don't have it on my 230SL.  Here's the path of my cable.
https://youtu.be/W1fMoR4GY5E

Title: Re: heater hoses, tachometer mounting clip, radiator re-core
Post by: specracer on April 21, 2023, 23:45:59

Did the same a couple years ago (radiator recore), for hoses, took the easy route and got this set:

https://www.authenticclassics.com/Mercedes-280SL-Cooling-System-Heater-Hose-Set-p/auth-008390.htm