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GaryArf View Drop Down
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    Posted: 23 June 2007 at 7:13am
                    GROUP 12 - 09 --- FUEL PUMP
 
Pump, Fuel, Assembly (int'ch'ble with 646248)...........Part NO. 640160
Pump, Fuel, Assembly (Carter) (int'ch'ble with 640160)...........Part NO. 646248
 
This is from the '49 parts list.
 
 
 
 
 
 
So which bowl is correct for the original part? the yellow zinced AC  steel or the glass bowl? I've always thought the glass bowl...But I never really asked anyone. The steel one came on #34692 and quickly failed after years of being dry. The parts manuel shows what appears to be the steel. I guess I like the glass because I can see whats going on in there..or not.
CJ2A #10021 #34692 #58500



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samcj2a View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote samcj2a Quote  Post ReplyReply Direct Link To This Post Posted: 23 June 2007 at 7:26am
I'm three for three with glass bowls.  I am all but certain that the original bowl was glass.
Sam

1946 CJ2A   15292 ACM    6678

1947 CJ2A 122031 ACM 111989

Are Glass Bowl Fuel Pumps OE?
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sean View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote sean Quote  Post ReplyReply Direct Link To This Post Posted: 23 June 2007 at 7:32am
#640160 is the only pump listed in the '45 & '47 Parts Lists.  Those lists only show a metal bowl, #A-1494 (same as MB).  This would be the original AC pump.

The '49 Parts List has #640160 being superceded by #646248 (Carter), and has both metal & glass replacement bowls listed.

So I'm betting the glass bowl wasn't used until after the '47 List was published.  There's no engine number change point listed.

But as with all things Willys, we'll never know for sure!

Sean


Edited by sean - 23 June 2007 at 7:34am
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Post Options Post Options   Thanks (0) Thanks(0)   Quote samcj2a Quote  Post ReplyReply Direct Link To This Post Posted: 23 June 2007 at 8:59am
I'm not ready to let this go to metal yet because I'm reading in the 1948 Mechanics Manual that the CJ2A used the AC Model AF fuel pump.  I have also seen references to the MB fuel pump's being the same model and in those references that the bowl was glass.
 
Sean, do your sources confirm that the MB bowl was metal all through production?
 
I have not been able to find any serious documentation of the model AF so all I can do for now is to raise doubt.  Edit: (and I do see the metal bowl in the '45 parts List)


Edited by samcj2a - 23 June 2007 at 9:08am
Sam

1946 CJ2A   15292 ACM    6678

1947 CJ2A 122031 ACM 111989

Are Glass Bowl Fuel Pumps OE?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote lowenuf Quote  Post ReplyReply Direct Link To This Post Posted: 24 June 2007 at 6:04am
i have an MB engine in a 2a frame that has a metal bowled pump...low
45 #10033 ACM #47
45 #10163 ACM #188
57 CJ5    Dauntless V6, T-18 4-speed, D-44 rear/D-30 front, D-20 twin stick



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sean View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote sean Quote  Post ReplyReply Direct Link To This Post Posted: 24 June 2007 at 7:19am
Consensus of the G503 is that all wartime production MB/GPW pumps had metal bowls.  They were essentially the same pump as used on CJ2A, but also included a manual hand primer lever:

    

The '47 AEA datasheet for CJ2A lists the pump as:
"AC Type 572, No. 1538886, Series AF"
A '49 ORD-9 MB parts list, has 3 pumps in order:
  • AC 1537766 ... superceded by
  • AC 1538312 ... superceded by
  • AC 1538886
So by '49, the original MB pumps were being replaced w/the same one used in CJ2A.

Quite a few MB are found w/glass bowls.  It's presumed that previous owners replaced the bowls w/glass, either due to damaged metal ones, or simply to be able to see the fuel.  The same might have been done on early CJ2A, but we'll never know for sure.

Sean

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Post Options Post Options   Thanks (0) Thanks(0)   Quote Jeff A Quote  Post ReplyReply Direct Link To This Post Posted: 24 June 2007 at 7:23am

I have an MB engine in a 1948 2a that has a metal bowl pump....

Assume that the MB engine was a replacement and the fuel pump?????

Jeff A
47 CJ2A
48 CJ2A Sold
89 YJ
06 TJ
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sean View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote sean Quote  Post ReplyReply Direct Link To This Post Posted: 24 June 2007 at 7:29am
Originally posted by Jeff A Jeff A wrote:

Assume that the MB engine was a replacement and the fuel pump?????
Does it have the priming lever?

Sean


Edited by sean - 25 June 2007 at 3:11pm
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samcj2a View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote samcj2a Quote  Post ReplyReply Direct Link To This Post Posted: 24 June 2007 at 7:30am
This is all very depressing Cry, but thank you for the information.  I'm with Gary and really like the appearance of the glass bowls and, probably as influential, strongly believed that the glass bowls were original.  I'll be looking for a replacement metal bowl.  Angry
Sam

1946 CJ2A   15292 ACM    6678

1947 CJ2A 122031 ACM 111989

Are Glass Bowl Fuel Pumps OE?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote GaryArf Quote  Post ReplyReply Direct Link To This Post Posted: 24 June 2007 at 8:01am
This one's a new one on me as well.. I guess we learn something everyday here. (I like the glass bowls better)
I can see the reason for a metal bowl in the military. I would hate to be getting shot at while fiddling with it only to drop it and have it break Shocked. I've chased one across a concrete floor before..good thing I broke the fall with my foot. 
CJ2A #10021 #34692 #58500



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Post Options Post Options   Thanks (0) Thanks(0)   Quote Jeff A Quote  Post ReplyReply Direct Link To This Post Posted: 24 June 2007 at 8:09am
Sean,
 
No primer lever.
 
Jeff A
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Post Options Post Options   Thanks (0) Thanks(0)   Quote sean Quote  Post ReplyReply Direct Link To This Post Posted: 25 June 2007 at 7:39am
I've scrutinized 4 pumps, and found some interesting stuff.  While all very similar to each other, none are exactly the same.  Minor details must have changed over the years.

    

Too many gory details to post here, web page at:   Four pumps in a row

Gary:  the metal bowl pump photo you posted above appears to be identical to my '45 dated pump.  Can you find casting numbers or date clock?  What vehicle did it come off?

Jeff:  no prime lever = non-MB pump (that's the G503 consensus anyway)

Sam:  smile, be happy! Big%20smile  Nothing wrong w/a glass bowl.  I plan to use one, it's just more sensible:
  • you can see if the pump is working or not
  • you can see if there's any crud still coming from the tank
A couple of more that have metal bowls too:
  • Connomans awesome #10371 "barn find" (go to his photo pages & look for the engine pics)
  • Dav45's recent '45 #10231 (same thing, check his photo album)
Sean
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Post Options Post Options   Thanks (0) Thanks(0)   Quote lowenuf Quote  Post ReplyReply Direct Link To This Post Posted: 25 June 2007 at 7:47am
both of my metal bowl pumps from MB engines do not have the priming lever.....
45 #10033 ACM #47
45 #10163 ACM #188
57 CJ5    Dauntless V6, T-18 4-speed, D-44 rear/D-30 front, D-20 twin stick



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sean View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote sean Quote  Post ReplyReply Direct Link To This Post Posted: 25 June 2007 at 8:07am
Mike:

I know little about MB, am just repeating what all the "experts" on the G503 say.

As with so many other parts, it's near impossible to say if something was original as it came off the assembly line, or had been replaced at some point.

Considering that the '49 ORD-9 parts list (4 years after MB production ended) lists the most recent pump being the same as used on CJ2A, it's likely that post-war motorpool maintenance would have used a non-primer pump for replacement.

The '44 TM9-803 (MB maintenance) manual says:
"The pump is equipped with a hand lever on the rear side which can be used to operate the pump for priming the carburetor bowl".
Did every MB have one?  I have no idea.

Can you find a casting date on yours?

Sean


Edited by sean - 25 June 2007 at 8:08am
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Post Options Post Options   Thanks (0) Thanks(0)   Quote sean Quote  Post ReplyReply Direct Link To This Post Posted: 10 July 2007 at 3:16am
Lucky find.  Don't know if it's quite 60 years old, but it's old, and fits perfect:

    
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Post Options Post Options   Thanks (0) Thanks(0)   Quote samcj2a Quote  Post ReplyReply Direct Link To This Post Posted: 10 July 2007 at 10:07am
Hmm, doesn't look like you'll be using a glass bowl after all! Tongue
Sam

1946 CJ2A   15292 ACM    6678

1947 CJ2A 122031 ACM 111989

Are Glass Bowl Fuel Pumps OE?
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Jerry 45 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Jerry 45 Quote  Post ReplyReply Direct Link To This Post Posted: 10 July 2007 at 3:54pm
I just brought home my 1946 #19248 and it has the metal bowl instead of the glass one on the pump.
Jerry


Edited by Jerry 45 - 10 July 2007 at 3:54pm
1945 CJ-2A 11802
1946 CJ-2A 19249
1948 VJ-2 Jeepster
"They can have my Jeep when they can pry it from my cold, dead hands."
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Bill M Quote  Post ReplyReply Direct Link To This Post Posted: 01 Nov. 2014 at 8:02pm
Hello all,
while browsing through an excellent period photo library I came across a nice photo of a CJ2A showing a fuel pump top bowl cover quite clearly. The Photo is dated June 1945 and is part of a comparison with a standard Willys MB.
cheers
Bill.
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