Military Aircraft - 1950s USN Lear, Inc. Cowl Flap Drive Box Assembly, Complete

Description

1950s Lear, Inc. Linear Actuator Motor Drive Assembly
One nice as-removed condition
Cowl Flap Drive Box
as manufactured for the US military effort by
Lear, Incorporated, Grand Rapids, Michigan, USA
. I suspect it's 1950s vintage and was probably built for USN as cowl flap drive assembly, given the type of linear rod movement and the application for a geared cable driver port to connect to other units.
Data tag on the linear actuator itself indicates it's a
p/n 409A-1
. Unit is
s/n 9-1541
. Data plate itself on this component is devoid of additional information as to rod throw length. There's just a unit s/n on the data tag after the part number.
Motor drive data plate has a little more information. The motor drive is a
Model No. A100AW1
. It is an intermittent duty motor. It's rated for
8,000 RPM
and
30 watts
, powered by
24 VDC
at
4.5 amps.
The linear rod length throw appears to be about 4 inches, which would be correct for a cowl flap application. The rod unit is mostly retracted, and we haven't powered the unit to get it to move back and forth.
Of special interest on this component... the motor drive and linear actuator sit on top of a soft aluminum box with a rubber seal that houses the electrical components. Note condition - they are absolutely beautiful and 100 percent clean. No oil, no dust, and no removal of parts. The box smells of that wonderful fungicide wiring preservative as used on electronics during the 1940s and 50s.  Also note the geared and splined capped port at the opposite ends of the actuator for coupling to a cable drive system to operate multiple cowl flap units off of separate cowl flap posts. Note as well the electrical connector ends - Cannon plugs...both ends. I suspect this unit came from a scrapped QEC aircraft motor assembly. It doesn't appear to have been used.
Paper schematic wiring diagram is still nice and shellac covered with varnish to the inside of the box cover lid. It's perfect. There are no part numbers on the steel cowl flap ends that might help ID this to application.
Application escapes me. It's Navy, as judged by the gray paint, and by a very, very faint white ink stamping of the USN anchor on the actuator end. Similar to the motor drive units as used in the PB4Y-2, the A-26 Invader and several others of that era.
Interesting little piece. Looks like a useful throw of about 3-4 inches on this system.
Un-tested by us, but appears to be a nice piece of take-off military aircraft surplus. It was warehouse stored for decades when we acquired it. Again, no clue as to the original application for this unit.
A little dusty from removal and storage - but that's about it. Slight dust and no damage to paint condition.  No other demil marks or bumps or signs of abuse or drop damage. I suspect the aluminum box end had two strip tabs made of bent aluminum and they appear to have been cut or removed. The box lid does stay on tight because of the rubber seal.
Exceptional condition.
What you see in the photo series is exactly  what you get.
Ships cheapest USPS Priority Mail in Medium Flat Rate Box unless you request otherwise. Questions? Please ask seller. And thanks for looking!