Gerald,
Another problem I had with the nose gear door was that the BID's on the top
of the nose gear tunnel cracked and sagged because I had not adjusted the
hyd. actuator to bottom out.  Thus, the nose gear strut would sag just
enough to not mash the sequence valve to close the door.  I installed an
angle iron across the top of the tunnel attached by a steel strap down each
side of the tunnel (brute force).  The angle iron is right behind the header
tank, about 1/4 inch.  Anyway, check the top of your nose gear tunnel.

Shattuck

Gerard,

 

Yep, that sure could be the reason for the valve not operating properly although I would think it would fail the same way on the ground - discounting the stress of takeoff.

 

Scott Krueger