JayG

Fuel Pump application help

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I just picked up a fuel pump and I'm pretty sure it's buick but not sure what year and series.  The bottom cover number is AC855228 which is for 1930 6 cal, 1931 8 cyl and 1932 series 50.  The body only has AC 6 Model-8 and 5598 numbers on it.  The top has 1522996.  My books don't show this number.  Anybody with a Hollanders that can look that # up?

 

Thanks, Jay

 

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I bought if for a 31 series 90.  It's not the correct inlet configuration for that.  The base appears to be Buick but the top seems to be circa 36 Dodge.  But Dodge pumps had the arm  whereas this one uses the push rod action. My Buick Master parts book only goes up to 32 so I was wondering if anyone knows if maybe 33 - 35 Buicks might have this top configuration.  Again the top # is 1522996.

Edited by JayG (see edit history)

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Jay, I looked through my 42 AC book which breaks down each pump into individual parts. I could not find your top cover number. Is it possible it has been misread?

 

The bottom cover is very common to all B and O type pumps.

 

Dave

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1522995 was a Dodge/Chrysler family pump, 36-41, so the top cover might be a later part number for that pump. As you know the early top covers were very fragile and many were replace with what was at hand. If I find something I will let you know.

 

Dave

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The number cast in the top is the AC part number of the top. 855228 is the AC part number of the bottom cover. It is a Model B. Is 5598 stamped on the mounting flange somewhere? The short number, 5598, is probably the last four digits of the AC part number of the pump, which is probably 855598.

 

That looks like a very early pump with the thin mounting flange. Turn it upside down and look at the under side of the flange the top mounts on. You might see a number cast into it, perhaps in a wee circle. What is that number? I think that is the manufacturing date.

 

Later: that pump is not original to any Buick from 1929 to 1937.

 

1931 series 60, 80 and 90 all had an AC Model B 855751 pump. "5751" will probably be stamped on the mounting flange somewhere.

 

Most of that pump will work, as long as the arm is the same. If you can find the right top and arm, they should work on that base and look right from above.

 

Later than later: 855751 is shown as the Standard Duty pump in an AC book. The Heavy Duty Pump was a model D 856139. This pump did not have the removable bottom cover (855228).

 

Still more later: 5598 is not listed as original to any US made car from 1929 to 1937. #5898 was used on Franklins, however.

Edited by Spinneyhill (see edit history)

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Thanks for all of the info so far.  Some more pics.  There is the number 5598 stamped in the bottom.  Nothing on the mounting flange. Theres something in a circle but don't know what it is.  Maybe you can tell from the pics.  Also provided a pic of the arm.  Is that Buick?

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My guess is that it was made in 1931. Can't tell the arm from that view, it is the sideways view one needs. Is there anything stamped in the side of the arm? Some have the AC part number stamped in them.

 

I doubt it is Buick coz that pump is not listed for Buick, or any other car. Perhaps a tractor or boat or ? industrial engine. I think the only way it could be Buick is if s.o. retrofitted a Buick arm. Or if the engine it came off was Buick but in another situation. I don't have any listings for those applications.

 

Looking really closely, I wonder if that is actually 5898, which would mean it is off a Franklin.

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One problem with those early pumps is the thinness of the mounting flange. Because of their tendency to bend over time, it is hard to seal them  against the engine and they tend to leak oil. Spares made in the later ''30s and particularly post war have a much thicker flange.

Edited by Spinneyhill (see edit history)

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Just found the United Motors Service catalog at restorecarsclassified.com. Fuel pumps are at the rear.

 

Your pump, 855751, used arm #855547. This arm was also used on the pump on 1930 series 40 (pump #855401) and 1930 series 50 & 60 (pump #855400) and that is all on Buick. thus you could also look for Model B pumps with 5401 or 5400 stamped on them. The top cover will be 855260 rather than 855259 as on the 1931 pump (also the 1929 pump, #855085, although that is a Model A pump and won't fit your engine).

 

But you are in luck! Well, maybe. Arm #855547 (5547 stamped on arm?) was also used on Cadillac 1932-3-4-5 8, 12 and 16 cyl. engines and the 1936 12 & 16 cyl. engines.

 

But you really have struck it lucky. Arm #855547 was used on pump # 855898! So that pump should bolt onto your car and get you on the road! Wow, what a stroke of luck. Just change the diaphragm to one that can handle ethanol and you are away.

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Thanks so much for the effort.  I went to the web site and printed the fuel pump section.  I will digest what you've given me but I think you've narrowed things down for me.  I was also misreading the numbers.  5598 instead of 5898.  That makes a big difference.  Thanks again, Jay

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