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  #1  
Old 13th December 2017, 00:34
ginamod ginamod is offline
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Part identification

Hi Experts,

any idea which part this.? Need urgently the identification, it will lead to the unknown plane model and later to clarification around a forgotten Crash.

Thx for replies in advance

dnalor
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File Type: jpg Teil mit Nummer.jpg (145.8 KB, 67 views)
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  #2  
Old 13th December 2017, 10:45
Adriano Baumgartner Adriano Baumgartner is offline
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Re: Part identification

Seems to be of médium size...and for me, who knows NOTHING on those parts, looks like something related to the hidraulic system (maybe the undercarriage).

I am sure some real aces here on Part Numbers, etc...will help you. One can see the PART NUMBER attached, so it may be easy to those "Aces" to find out to what kind of part it is related.

I Always learn from them (there is one guy from the USA who knows a lot about this kind of pieces) and am Always astonished how they can find to which part of a huge bomber or fighter small parts like that were attached or co-related.

Luck for you and we do hope you will be able to find the co-relation, serial number of the machine and all Story behind its fate.

Adriano B.
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  #3  
Old 13th December 2017, 12:27
ClinA-78 ClinA-78 is offline
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Re: Part identification

Please a rule, scale, penny, euro, etc.

ClinA-78
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  #4  
Old 13th December 2017, 17:01
RSwank RSwank is offline
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Re: Part identification

Without an included "scale" an identification is difficult. Also there seems to be a little more of the part to the right that is not included in the photo. A few more views from different angles would help.
Making a guess, it does not seem to be a part of the landing gear. The distance the piston would move seems rather short, based on the size of the "body".

While B-24s were mainly "hydraulic" machines many planes had a few such parts. Late model P-38s had hydraulically boosted ailerons for example.
In fact, the hydraulic system of the P-38 operated the landing gear, landing gear doors, wing flaps, coolant radiator exit flaps, and along with the aileron boosters.

The part numbers may be useful if appropriate manuals could be located.
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Old 13th December 2017, 18:04
Adriano Baumgartner Adriano Baumgartner is offline
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Re: Part identification

Dnalor,

You seems to be on the road to find out more about this piece/part of a supposed hydraulic system from a P-38. Maybe more DATA, pictures, etc...can help the experts here to help you!

I did have a booklet about the P-47D maintenance, but gave it to a friend of mine...so, perhaps someone here do have a similar USAAF Booklet of Maintenance on the P-38 and can confirm the LOCAL where this part (hydraulic-servo?) was installed.

IF you do manage (with nearby persons, former habitants) to find out a possible date, some members here can help you and even track down which machine this piece belongs to...and, of course, the story behind.

Well....there are several Archeologists here, from Russia, France, Holland, etc...you will be helped surely.

Adriano B.
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  #6  
Old 13th December 2017, 19:38
Horst Weber Horst Weber is offline
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Horst Weber
Re: Part identification

Quote:
Originally Posted by ginamod View Post
Hi Experts,

any idea which part this.? Need urgently the identification, it will lead to the unknown plane model and later to clarification around a forgotten Crash.

Thx for replies in advance

dnalor
Adriano

By the onsprayed colour (zinc-cromate) it looks as an USAAF device.

Horst Weber
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  #7  
Old 13th December 2017, 20:26
RSwank RSwank is offline
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Re: Part identification

Just for comparison, here are a couple of hydraulic parts. You can move the cursor over the image to enlarge.


The first is from a P-51 Mustang and operates the landing gear doors.

https://www.aircorpsdepot.com/aircra...-p-51-mustang/

This next part operates the cowl flaps on a B-25.

https://www.aircorpsdepot.com/b-25-cowl-flap-cylinder/
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  #8  
Old 13th December 2017, 22:48
ginamod ginamod is offline
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Re: Part identification

Hello Friends,

I am overwhelmed by this number of positive entries. Thx a lot.

Sorry for leaving out the scale, thought the numbers would be enough for ident. The device is not in my possession, but due to the handle one can esteem the full size. The device was made/changed to an air pump (bellows) for a blacksmith, therefore a wooden handle was attached.
Actually we do not know what happend with that unknown crash, one crew died on a sledge whe he was led to the doctor. No day, no year , no Name, not surviving witnesses found yet, no plane modle......

Nevertheless I do not give up.
Best
dnalor
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  #9  
Old 13th December 2017, 23:21
RSwank RSwank is offline
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Re: Part identification

The manufacturer appears to be United Aircraft Products (UAP). They subcontracted on many different planes. While UAP was based in Dayton , Ohio in 1940 they had merged with Aircraft Precision Products of Los Angeles. If this was in some sense a "standard" part, it may well be that the numbers are all UAP numbers and don't relate to a particular plane.



Update

Here is a link to a diagram showing the various hydraulic parts used in the P-38 cockpit area. Among the vendors listed, Bendix, Parker, Purolator and Vickers is United Aircraft Products.

http://legendsintheirowntime.com/LiT..._BW_p033_W.png

This does not show the hydraulic parts in other areas, particularly in the booms where I believe there were some flaps. At least we can say that UAP parts were in a P-38.

Last edited by RSwank; 14th December 2017 at 02:11.
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  #10  
Old 17th December 2017, 20:09
RSwank RSwank is offline
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Re: Part identification

A few more thoughts on the part that "might" be from a P-38. Normally hydraulic actuators are attached only at each end in such a way that as the piston moves the whole unit (body and piston) can rotate. This is what is seen in the actuators that move the landing gear and in those that open and close doors and flaps.

This small part appears to have been attached in such a way that the body would not move as the piston expands. (See the broken flange that was apparently used to attach this part. The two holes on each end are broken out). In looking around on a P-38 for a part that might have been used in that way I found the acutator that locks the front wheel well hatch closed. It is very hard to find a photo of this acuator, as it is located on the very front left side of the front wheel well. When the front wheel is down the wheel struts (which have swung forward) block the view. Also the acuator is up inside the wheel well, attached to the left sidewall.
There are some drawings in an "Erection and Maintainence Manual for Army Model P-38L" that show the part but things such as the hydrauiic lines to and from the actuator are omited. Some of the drawings do not show exactly how the unit is attached to the sidewall.

The manual (with some pages missing) can be found on this link:
http://www.xtrmntr.com/lightning/repo.html

The "S" , "G" , "M" and "D" at the end of the lines are actually the links to the files on Scribd (click the "S"), Google (click the "G"), Microsoft (click the "M") and Dropbox (click the "D"). It appears the Dropbox links no-longer work but the others seem active.
The first item on the link above is Part 1 of the Erection Manual. The "G" link gets to a pdf file on Google docs. On pdf page 49 (which is manual page 93) and pdf page 52 (manual page 96) you can see some drawings of the latch acuator. The drawing on page 52 is a little more detailed and it does show an attachment method to the sidewall. Perhaps the attachment method in various P-38 models was different. At any rate it appears that the acuator is fairly small and the piston does not need to move very far to lock the hatch door via the "jaws" mechanism.
I could not find a photo of the actual locking actuator part on line. You can find photos that show the "loop" on the hatch that the locking jaws grab. Maybe someone has access to a P-38 (maybe in a museum somewhere) and could get permission to take a photo up inside the wheel well which would show the actuator.

Last edited by RSwank; 19th December 2017 at 19:54.
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