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Forum: Vintage Mercedes Forum

07-20-2016, 05:49 PM

Replies: 32

Correct radiator cap for a 280se 4.5?

Views: 2,213

Posted By Graham

I think that is correct. Once the tstat is open,...

I think that is correct. Once the tstat is open, the car will find an equilibrium temperature at which the heat transferred by the engine to the coolant will equal the heat transferred by the...

Forum: Vintage Mercedes Forum

07-20-2016, 04:32 PM

Replies: 32

Correct radiator cap for a 280se 4.5?

Views: 2,213

Posted By Graham

Is that the way the 280SE is? On other cars of...

Is that the way the 280SE is? On other cars of that era, there is a 62C switch on the receiver/dryer that actuates the aux fan. I know I deactivated it when I switched to R134a on one car so fan...

Forum: Vintage Mercedes Forum

07-20-2016, 08:25 AM

Replies: 32

Correct radiator cap for a 280se 4.5?

Views: 2,213

Posted By Graham

The front fan is electric. It is actuated only if...

The front fan is electric. It is actuated only if coolant goes above 100C (212F). You can test it by grounding the connector on the 100C temperature switch which is located at front center of engine...

Forum: Vintage Mercedes Forum

07-19-2016, 05:19 PM

Replies: 32

Correct radiator cap for a 280se 4.5?

Views: 2,213

Posted By Graham

Your car more than likely has a...

Your car more than likely has a non-thermal/centrifugal clutch. It should run at the same speed as the water pump shaft that drives it. If you rev the engine up to about 3500rpm, you should hear the...

Forum: Vintage Mercedes Forum

07-14-2016, 07:30 PM

Replies: 32

Correct radiator cap for a 280se 4.5?

Views: 2,213

Posted By Graham

There is not much special about using a timing...

There is not much special about using a timing light to set the timing. Any local shop should be able to do that and it only takes a short time. But you should give them the numbers I gave you.

On...

Forum: Vintage Mercedes Forum

07-14-2016, 02:22 PM

Replies: 32

Correct radiator cap for a 280se 4.5?

Views: 2,213

Posted By Graham

That is what the manual confirms use of (100 or...

That is what the manual confirms use of (100 or 1bar cap). However, I recall having trouble finding a 1bar cap, so I am using a "120"or 1.2bar cap. The cap won't make the engine run hot.

A bad...

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