Author Topic: Lubricating the fuel injection pump  (Read 2579 times)

blairwag

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Lubricating the fuel injection pump
« on: July 17, 2005, 20:40:31 »
In my repair nightmare this weekend, I decided to lube the chassis. Checking some of the manuals, I was alarmed to see the recommendation of renewing the oil in the fuel injection pump.

I've got a 1971 280SL. In reading the BBB, Haynes Workshop manual, and Chilton Repair manual, I've gotten myself confused. Originally, I thought that the fuel injection pump used the same oil as the engine crank case, and that oil was curculated from the crank case, through the injection pump. Is that not true? ... or do I need to drain and refill the fuel injection pump with motor oil as part of my routine maintenance?  Does this thing have an oil filter that should be routinely replaced?


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William Blair Wagner: blairwag@earthlink.net
Education is not always knowing the answer,
...but rather knowing where to look for it!
1971 280SL US Automatic
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ja17

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  • USA, OH, Blacklick
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Re: Lubricating the fuel injection pump
« Reply #1 on: July 17, 2005, 21:21:59 »
Hello William,
Only the early fuel injection pumps had the isolated oil supply. Your 280SL has an injection pump which has engine oil circulating through it. No oil change required.

Joe Alexander
Blacklick, Ohio
« Last Edit: July 17, 2005, 21:23:08 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

blairwag

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Re: Lubricating the fuel injection pump
« Reply #2 on: July 17, 2005, 21:48:16 »
Shew! Thanks, Joe, for confirmation.

--
~~~~~~~~~~~~~~~~~~~~~~~~~~~
William Blair Wagner: blairwag@earthlink.net
Education is not always knowing the answer,
...but rather knowing where to look for it!
1971 280SL US Automatic
~~~~~~~~~~~~~~~~~~~~~~~~~~~