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  #1  
Old 12-19-2016, 03:38 PM
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76 280c waterpump

anyone know how to replace waterpump can hoses be replaced without removing pump 76 Mercedes 280 c with ac


Last edited by huffandpuff; 12-19-2016 at 03:40 PM. Reason: 76 280c waterpump and hoses
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  #2  
Old 12-19-2016, 04:32 PM
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Which hoses are you referring to? The upper and lower radiator hoses, heater hoses or the little PITA hose between the pump housing and the water inlet housing?
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Old 12-19-2016, 07:09 PM
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76 280c waterpump

believe its the upper fr pipe to waterpump will chk it tomorrow tight area looks like ac pump ?? might be in the way is it big job to replace water pump
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Old 12-20-2016, 06:00 PM
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76 280c return hose fr waterpump and ac compresser

looked at hose does look like waterpump return hose this 280c has compresser belt got loose by ther tension pulley doesn't seem to swing can alternater be taken out without compresser being moved sure is a tight area looking fr underneath 76 280 c 114 073
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Old 12-20-2016, 06:40 PM
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The return hose is the upper radiator hose.

The lower radiator hose is a (relatively) short, fitted hose which goes from the lower radiator to a pipe. This pipe is the heater by-pass/return. There is another fitted hose leading up to the thermostat housing.

The lower hose can be changed without removing anything although removal of the alternator simplifies the task.

The by-pass hose is a horse of a different color. It CAN be done and I have done it ONCE (but never again!!) without moving the compressor.

You need to determine exactly which hose you are replacing before you start randomly removing parts.

There is also a short straight hose connecting the thermostat housing to the water pump housing.
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Old 12-20-2016, 07:23 PM
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thank you mike for the advice will look again tomorrow sure is a tight area will know when this alternater and compresser out ill take pics and post for future refrences fctory manuals only have some info thank you very much mike
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Old 12-20-2016, 07:35 PM
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I'll take some photos to show you the different hoses. My M110 does not have the compressor mounted so you'll be able to get a clear look at the different hoses. Hopefully they will clarify what Frank and I are saying.
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Old 12-21-2016, 09:51 AM
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Here's some pictures from my spare M110.

76 280c  waterpump-lower1.jpg
Complete hose assembly (minus the heater line)

76 280c  waterpump-lower2.jpg
The actual lower (radiator) inlet hose

76 280c  waterpump-lower3.jpg
Metal tube/heater by-pass/ return

76 280c  waterpump-lower4.jpg
Same without my fingers in the way

76 280c  waterpump-lower5.jpg

What it looks like when removed from the engine.
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Old 12-21-2016, 12:00 PM
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THANKYOU MIKE THANK YOU VERY MUCH WITH THE KNOWLEDGE YOU HAVE COULD WRITE A BOOK Luxembourg LU .COM THE FACTORY MANUALS DOESNT HAVE MUCH IN DETAILS

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