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Thread: MEP-803a : AirTex fuel pump substitution

  1. #61
    4 Star General Guyfang's Avatar
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    MOUNTING TYPE NONSTANDARD
    MOUNTING HOLE QUANTITY 2
    ACTUATION METHOD ELECTROMAGNETIC
    FORDING FEATURE NOT INCLUDED
    MAXIMUM DISCHARGE FLOW RATE 0 1/20 GALLONS PER MINUTE
    MOUNTING CONFIGURATION 2 HOLES 180 DEG APART
    MOUNTING HOLE SPACING 2 12/25 IN.MIN 2 29/50 IN.MAX C TO C
    GROUND POLARITY TYPE NEGATIVE
    VACUUM BOOSTER NOT INCLUDED
    FUEL FILTER NOT INCLUDED
    PRIMING LEVER NOT INCLUDED
    INLET CONNECTION TYPE/SIZE FUEL 1/4-18 NPTF
    OUTLET CONNECTION TYPE/SIZE FUEL 1/4-18 NPTF
    DRAIN FACILITY NOT INCLUDED
    CRITICALITY CODE JUSTIFICATION FEAT
    VOLTAGE IN VOLTS 24
    SPECIAL FEATURES WEAPON SYSTEM ESSENTIAL
    TERMINAL TYPE AND QUANTITY 2 WIRE LEAD

    The plot thickens. I asked someone to look this number, (40913) up for me. It is listed with a NSN of 2910-01-378-6025, part number 88-20192. The info above is whats listed for the new NSN. Purolator also provided this pump to the Army. The only problem is, that when you plug in the new NSN in E-PAY, it comes up as a fuel pump for the 802 and 803A gen sets.

    So, I have to tell you, I am stumped.

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  3. #62
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    Wow thanks Guys, I knew the nsn's weren't the same but it also looks like the specs are not compatible. Everything on the 831A seems to be higher pressure than the 803A
    mep803A [sold], MEP803A, MEP831A, MEP831A

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  5. #63
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    Quote Originally Posted by Guyfang View Post
    MOUNTING TYPE NONSTANDARD
    MOUNTING HOLE QUANTITY 2
    ACTUATION METHOD ELECTROMAGNETIC
    FORDING FEATURE NOT INCLUDED
    MAXIMUM DISCHARGE FLOW RATE 0 1/20 GALLONS PER MINUTE
    MOUNTING CONFIGURATION 2 HOLES 180 DEG APART
    MOUNTING HOLE SPACING 2 12/25 IN.MIN 2 29/50 IN.MAX C TO C
    GROUND POLARITY TYPE NEGATIVE
    VACUUM BOOSTER NOT INCLUDED
    FUEL FILTER NOT INCLUDED
    PRIMING LEVER NOT INCLUDED
    INLET CONNECTION TYPE/SIZE FUEL 1/4-18 NPTF
    OUTLET CONNECTION TYPE/SIZE FUEL 1/4-18 NPTF
    DRAIN FACILITY NOT INCLUDED
    CRITICALITY CODE JUSTIFICATION FEAT
    VOLTAGE IN VOLTS 24
    SPECIAL FEATURES WEAPON SYSTEM ESSENTIAL
    TERMINAL TYPE AND QUANTITY 2 WIRE LEAD

    The plot thickens. I asked someone to look this number, (40913) up for me. It is listed with a NSN of 2910-01-378-6025, part number 88-20192. The info above is whats listed for the new NSN. Purolator also provided this pump to the Army. The only problem is, that when you plug in the new NSN in E-PAY, it comes up as a fuel pump for the 802 and 803A gen sets.

    So, I have to tell you, I am stumped.
    Looking at the images in fleabay for this part number the lines do look like 1/4" for the 831 instead of the 3/8" for the 802 or 803. Looks could be deceiving though.

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  7. #64
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    Green mountain generators is selling the Facet 40193 as a part for the 803A/802A. Also a guy on Ebay is too. Maybe they are compatible.
    mep803A [sold], MEP803A, MEP831A, MEP831A

  8. #65
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    I've been looking for an airtex sub based on the specs: can't find it due to that 30psi value. But looking over my parts notes I have the Facet 40193 as the original main fuel pump for our 802/803 machines and I've seen reports of success with the Airtex E8131 substitution. This jives with what Guy found with the new NSN number going back to the 802/803 family. I would try the E1074 or E8131 from Airtex: same pumps we use on the 802/803 machines.

  9. #66
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    I am going to order a E1074 as a spare for the 803A anyway so I may try it in the 831A just to prove a point. Now that winter has finally arrived though it will probably be in the spring. On the other hand now that I am retired I may be looking for something interesting to do.
    mep803A [sold], MEP803A, MEP831A, MEP831A

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  11. #67
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    Whenever you guys buy spare pumps to keep on-hand for emergencies, make sure you check your inlet/outlet location and fitting sizes to be sure you won't need any adapters/fittings to make the pump fit. Depending on which style pump you are replacing, the inlet and outlets may be reversed and the old pump may have a right angle outlet built into the pump. The military used a short extension tube to compensate for the inlet/outlet swap when switching from the square to round body. So you may need either a 45 or 90 degree flare adapter or possibly an NPT x flare adapter if you are trying to reuse the in-line fuel strainer ( looks like a little filter screwed into the pump )
    Just look at your configuration closely to ensure you have everything you need to make it fit, then put it all in one box for when the time comes!

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  13. #68
    4 Star General Guyfang's Avatar
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    Quote Originally Posted by Ray70 View Post
    Whenever you guys buy spare pumps to keep on-hand for emergencies, make sure you check your inlet/outlet location and fitting sizes to be sure you won't need any adapters/fittings to make the pump fit. Depending on which style pump you are replacing, the inlet and outlets may be reversed and the old pump may have a right angle outlet built into the pump. The military used a short extension tube to compensate for the inlet/outlet swap when switching from the square to round body. So you may need either a 45 or 90 degree flare adapter or possibly an NPT x flare adapter if you are trying to reuse the in-line fuel strainer ( looks like a little filter screwed into the pump )
    Just look at your configuration closely to ensure you have everything you need to make it fit, then put it all in one box for when the time comes!
    You can relate this right back to the alternator head rotation "problem". It's always good to take a new part in the hand, if your not real familiar with it, and compare it to the original. This sometimes saves you much stress and work. 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.

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  15. #69
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    I reached out to Facet/Purolator and received a reply from Paul Puleo National sales manager. I asked if they had a pump with the same specs as the 40193. He informed me that I could buy the 40193 from J&N Electric. I advised him that I would prefer a pump that is still in production. He replied that it still is in production but can only be purchased from J&N Electric. The 40193 is not listed in the Facet/Purolator catalogue. This is getting weird.

    Also I ordered the E1074 pump from Summit for my 803A and they advised their delivery date is now Jan 22 so it will be shipped to customers after that if it doesn't get delayed again.
    Last edited by dav5; 01-07-2019 at 19:51.
    mep803A [sold], MEP803A, MEP831A, MEP831A

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  17. #70
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    The 40193 isn't in their regular fuel pump catalog. It is listed in their Industrial Fuel Pump catalog.
    See http://www.facet-purolator.com/wp-co...%20catalog.pdf
    MEP-831A Governor Controller Replacements for the SLC100, 2990-01-477-1371, 98-19539.
    https://www.steelsoldiers.com/showth...49#post2176649
    MEP-802A, Two MEP-831A's

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