737 Fuel Pump Photo
Thread Starter
Joined: Aug 2004
Posts: 23
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From: Manchester UK
737 Fuel Pump Photo
http://www.jetphotos.net/viewphoto.php?id=5793015
Has this guy got the ctr tank pumps on with a dry tank? It looks that way to me.
Has this guy got the ctr tank pumps on with a dry tank? It looks that way to me.
Joined: Dec 2004
Posts: 126
Likes: 0
From: UK
If you look closely enough, which you evidently must have, neither centre tank low pressure light is lit meaning there is still fuel in the tank and both pumps are working.
The centre tank gauge, especially on the 3/4/500, can often read zero when there is still fuel in there and as such the master caution won't come on until BOTH low pressure lights are lit. This is really the only way to tell that the tank is actually empty.
I don't know whether to say 10/10 for observation or you need to get out a bit more! :
The centre tank gauge, especially on the 3/4/500, can often read zero when there is still fuel in there and as such the master caution won't come on until BOTH low pressure lights are lit. This is really the only way to tell that the tank is actually empty.
I don't know whether to say 10/10 for observation or you need to get out a bit more! :
Joined: Feb 2006
Posts: 44
Likes: 0
From: Ireland
Centre tank pump switches
Your right about the low pressure lights, both on to get the master caution.But if one comes on first as it usually does, (standpipes) you'ill get the master caution on pressing "recall"
However if for some reason you select one centre tank pump switch on (mel perhaps) and there is fuel,(low pressure light out) You will get the master caution and fuel light on pressing "recall". This is the only time,that i can think of, you'ill get something on the master caution and not have an amber light illuminated on the overhead.
This was the case on the 2,3,4,500.anyway.
Try it next time you've fuel in the centre. Usual caveats about use of centre tank pumps.
However if for some reason you select one centre tank pump switch on (mel perhaps) and there is fuel,(low pressure light out) You will get the master caution and fuel light on pressing "recall". This is the only time,that i can think of, you'ill get something on the master caution and not have an amber light illuminated on the overhead.
This was the case on the 2,3,4,500.anyway.
Try it next time you've fuel in the centre. Usual caveats about use of centre tank pumps.
