A-20 Boston parts for identification

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R

Researcher

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Jul 25, 2019
Hi All, my first post,
In two different location of crash sites, one in Russia and one in Ukraine were found similar parts. Stamp on one of the parts is belong to Douglas. Soviets in WW2 used Douglas A-20 Boston. Asking for help to identify them. Can't find in all available manuals, where exactly were located these parts.
Thanks

 
Looks cooland related based on the square head pipe plug looking part and the coolant (not fuel) looking tube protruding from the bottom. Seems like I've seen something similar on the front, lower corner of the firewall but can't remember left or right side of the firewall.
 
Bigmerle, big thanks for your reply

So you are saying this is a part of engine cooling system?
 
Researcher said:
Bigmerle, big thanks for your reply

So you are saying this is a part of engine cooling system?
Click to expand...
That really doesn't make sense does it? (R-2600 air cooled) Wish we could better see the damaged parts. Consider lubricating engine oil system if you have a parts or E & M manual.
 
Bigmerle said:
That really doesn't make sense does it? (R-2600 air cooled) Wish we could better see the damaged parts. Consider lubricating engine oil system if you have a parts or E & M manual.
Click to expand...
By the way Researcher, do you have an A-20G parts manual? I could really use some reference pages on the pilot's seat attachment points?
 

The engines are air cooled. There is no other coolant system.

The only fluid systems on the aircraft are oil, fuel, hydraulics and anti-icing.

Some dimensions would help - even if it is only the size of the square on the drain plug.

At this stage from your photos I would say it is not from an oil tank
 
Last edited:
Bigmerle said:
By the way Researcher, do you have an A-20G parts manual? I could really use some reference pages on the pilot's seat attachment points?
Click to expand...

All manuals I have are from this forum. Unfortunately they are not complete. All what I can do, to attach better quality photos.
 

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MiTasol said:
Photos with a tape measure or ruler from these angles would also help a lot.

I have not worked on an A-20 since 1974 so I need better information to prompt my memory.

View attachment 547482
Click to expand...
Will try to get your dimensions.

I do agree with you. I have checked all liquid systems on A-20, except anti- icing system. In all available manuals anti-icing system is presented very poor. Obviously the plug on my photos is for fill up a liquid substance. A strainer clearly visible. Douglas stamp shows the plug is not part of the engines. Engines are made by Wright and would have different stamps. In the same time flange, where filling plug body and plug itself were secured with wire for high vibration location. And what's mean letters BOT?
 
Is the strainer directly connected to the plug with the D on it? What I mean is - if the plug is out can you see the strainer through the hole?
Does the hose fitting also connect to the plug and strainer?
If so it is far more likely this is from the bottom of the unit and the plug is the drain plug.

You are right that a D with a number inside is a common Douglas inspection stamp
 
MiTasol, thanks for your inputs.
I am sorry, for misleading you. Plug with D and other plug were found in different locations. Plug with D is made from brass and doesn't have a magnet on it. The plug was found with no strainer on it.
 
Researcher said:
MiTasol, thanks for your inputs.
I am sorry, for misleading you. Plug with D and other plug were found in different locations. Plug with D is made from brass and doesn't have a magnet on it. The plug was found with no strainer on it.
Click to expand...

No problems
The plug with the magnet will definitely be in the lowest point of the container so that provides positive orientation for the component so that helps
 
Once again, I have checked all liquid systems for A-20. To make shure, I did not miss anything, have checked similar system on A-26 Invader and C-47. All made by Douglas Aviation.
Now I need your opinion on my thoughts. Here is a picture of A-20 Havoc wing fuel tank. I think that red circled part is my search. What do you think, folks?
Thanks!
 

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