MEP-002A Aux fuel cut off level

[catman393]

Does anyone know at what level the Aux fuel pump is supposed to cutoff? Right now it looks like mine cuts off at just under 13/16 full. I can't find it in the pubs so I figure I'd ask you guys.

Thanks in advance

 

[DieselAddict]

That is controlled by a float switch in the tank. I've not seen an exact measurement.

Do you have a specific concern about the level? That level looks reasonable to me. You wouldn't want it to fill the tank completely in case the generator was sitting unlevel. About 3/4 or maybe a little more is the maximum I would want it to fill.

 

[catman393]

I don't have a direct concern I just remember reading in the TM to keep the day tank as full as possible (of course I can't find it now). That lead me to believe that the aux pump would get the day tank to 100%. Just verifying. Thanks for the info!

 

[DieselAddict]

My 003 fills the tank to between 3/4 and full on the gauge which is closer to 3/4.

I would be concerned if it tried to fill it full since that could lead to an overflow situation. As long as the pump starts and stops repeatably and keeps the level over 1/2 you should be fine.

 

[Chainbreaker]

According to the diagram on pg 115 of TM 5-6115-584-12 the switch is tripped when the float drops below 2 7/8" +/- 3/16" from bottom threads of the aux fuel switch. On my -002a the aux transfer keeps the tank about 3/4 full which seems about right to leave about 2 7/8" head room in the tank (transfer complete switch inactive)

 

[rustystud]

It does say somewhere in the TM that is only to fill up to 3/4 full. I just can't find it right now.

 

[dangier]

Same here. 2-just under 3/4 and two just over 3/4.