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Thread: MEP-803a : AirTex fuel pump substitution

  1. #71
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    OK thanks Kurt that makes a lot more sense. I should have read your previous post with more care. I see now you made that clear then.
    Last edited by dav5; 01-07-2019 at 20:13.
    mep803A [sold], MEP803A, MEP831A, MEP831A

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    Quote Originally Posted by Guyfang View Post
    Because when you NEED to fix something RIGHT now to get the lights back on NOW, you tend to not notice small little things like it just doesn't fit, until it dosnt fit. By then you are into stage two panic, and it can go south fast from there.
    Indeed. The human element is sometimes forgotten when everything is going A-OK.
    Non Semper Erit Aestas

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  4. #73
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    J&N electric just sent me a quote of $139.69 plus shipping for the 40193 pump
    mep803A [sold], MEP803A, MEP831A, MEP831A

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  6. #74
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    Wow. Makes the E1074 from Summit Racing look like a steal.....

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  8. #75
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    I just talked to the local Yanmar service mechanic. He said he has never put a relacement pump in a Yanmar engine that was above 5-7 lbs and that there is no way a 30lb pump is necessary. In many situations the L70 is just gravity fed. Interesting.
    mep803A [sold], MEP803A, MEP831A, MEP831A

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  10. #76
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    Ok here is some more info to muddy the waters. I'm working on an 802 with a dead fuel pump now. I figured I'd give this a shot since the 802 still had the old style faucet pump on it. I offered the seller $70 and they took it. I know, more than the Airtex pump, but I was curious about this pump. Got the pump in the mail today. Stamped on the back of the mounting flange is FSCM72850. Researching this number leads to 831 parts. Who knows, this could be the correct pump. When I get time I will fire this up on a pressure gauge and see what I come up with

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  12. #77
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    In the 831 TM the FSCM 72850 shows as a fuel filter:

    ARMY TM 9-6115-639-23P
    AIR FORCE TO 35C2-3-386-54
    MARINE CORPS TM 10155A-23P/2A
    PART NUMBER INDEX
    FSCM .....PART NUMBER..... STOCK NUMBER .............FIGURE NO..... ITEM NO
    72850 .....479735 ..............2940-01-365-6535 .............2................ 70

    https://www.easternsurplus.net/PartD...or-Fuel-Filter

  13. #78
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    I can assure you what I have on my bench is not a fuel filter! The mystery continues!

  14. #79
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    Quote Originally Posted by smokem joe View Post
    I can assure you what I have on my bench is not a fuel filter! The mystery continues!
    No doubt!!! I'm as confused as everyone else. You mentioned the 831 so I started looking around the TM and that is the info I found corresponding to the numbers stamped on your square Facet fuel pump. Interesting mystery.....

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    Quote Originally Posted by smokem joe View Post
    Ok here is some more info to muddy the waters. I'm working on an 802 with a dead fuel pump now. I figured I'd give this a shot since the 802 still had the old style faucet pump on it. I offered the seller $70 and they took it. I know, more than the Airtex pump, but I was curious about this pump. Got the pump in the mail today. Stamped on the back of the mounting flange is FSCM72850. Researching this number leads to 831 parts. Who knows, this could be the correct pump. When I get time I will fire this up on a pressure gauge and see what I come up with

    Haven't been looking in here for a few days. What were you researching, when you looked for FSCM 72850? The definition of FSCM is listed below. Its the gov way of giving every company that supply's parts to the Gov, a name, without using THE NAME. It in itself, can not lead you to parts for anything. Its simply the manufacturers, or suppliers name. Below the definition, is the FSCM and the name of the company that supplies the part.


    c. FSCM (Column (3)). The Federal Supply Code for
    Manufacturer (FSCM) is a 5-digit numeric code which is used to
    identify the manufacturer, distributor, or Government agency, etc.,
    that supplies the item.

    72850 Eclipse Machine Division of Bendix Aviation Corp.

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