Hello everyone,
I'm trying to identify a mechanical component recovered from a Douglas A-20 Havoc/Boston wreck site.
After dismantling the assembly, a clear marking appeared on the small circular component:
P/N 4055762
The unit consists of a small drum-like element, a curved band around it, a lever system and an adjustable threaded rod. From its construction, it appears to work as some kind of friction device / band brake / torque-limiting mechanism, used to resist or control rotational movement.
At first we considered the possibility that it belonged to the nose wheel snubber system, but after checking the original A-20 maintenance manual this now seems unlikely. The actual nose-wheel snubber shown in the manual is a completely different hydraulic assembly.
The number format appears consistent with Douglas part numbering, but so far I have not been able to find 4055762 in the documentation available to me.
I would be very grateful if anyone with access to the Douglas A-20G/J Parts Catalog AN 01-40AL-4, or other original Douglas parts documentation, could check this number or recognize the assembly from the photographs.
I can provide several detailed photos of the dismantled component, including close-ups of the marking and internal construction.
Many thanks in advance for any help.
I'm trying to identify a mechanical component recovered from a Douglas A-20 Havoc/Boston wreck site.
After dismantling the assembly, a clear marking appeared on the small circular component:
P/N 4055762
The unit consists of a small drum-like element, a curved band around it, a lever system and an adjustable threaded rod. From its construction, it appears to work as some kind of friction device / band brake / torque-limiting mechanism, used to resist or control rotational movement.
At first we considered the possibility that it belonged to the nose wheel snubber system, but after checking the original A-20 maintenance manual this now seems unlikely. The actual nose-wheel snubber shown in the manual is a completely different hydraulic assembly.
The number format appears consistent with Douglas part numbering, but so far I have not been able to find 4055762 in the documentation available to me.
I would be very grateful if anyone with access to the Douglas A-20G/J Parts Catalog AN 01-40AL-4, or other original Douglas parts documentation, could check this number or recognize the assembly from the photographs.
I can provide several detailed photos of the dismantled component, including close-ups of the marking and internal construction.
Many thanks in advance for any help.
