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I just found out that my passenger side inside door handle will not open the door. Amazing, I never realized this because I never exited the door from that side. What is wrong with a handle like this? The outside handle opens the door fine but the inside will not. By the way, this is a 1950 F1.
Joker50
Check the alignment of the striker that locates the up & down position of the door when it closes. Mine was rubbing on the bottom side and every few closes would not open with the handle. Adjusted so the door part entered on center and prob solved.
The outside handle shaft is connected directly to the lock mechanism bolt. The inside handle mounting plate is screwed to the inside surface of the door and connected to the door latch mechanism via an extension arm about 16 inches long. That arm is attached to the interior handle actuator with a single rivet. Chances are the rivet has failed and the shaft dropped off. Or it was removed by the PO (to keep the kids from opening the door)
On these mechanisms they are locked from the inside by pushing the handle counterclockwise on the passenger side and clockwise on the drivers side. There is a detent in the plate holding the interior handle that the actuating arm sits in when locked, and a spring that holds it there.
You might want drop the latch mechanism out and check to see if the interior handle mounting plate (about 2 inch eq. triangle) is still attached to the extension arm, and that it's spring is still intact.
But, before you do that here is a way to see if they are connected correctly without removing the mechanism.
Open the door and push the exterior handle down all the way and hold it. Then push/pull the interior handle clockwise (to the "open the door" position) as far as it will go and hold it. Release the exterior handle - it should stay down. Slowly allow the interior handle to spring back (release)...the exterior handle should now raise on it's own slowly with the interior handle. If that doesn't happen or exterior handle doesn't stay dow initially, the extension arm is not connected.
Here are some pictures (please forgive the lay nomenclature)
PS: The upper photo is mislabelled: this is the passenger side
Awesome work Juls. I think the photographs do an excellent job of describing how the mechanism works. Sounds to me that there is an issue with the connection between the interior handle mechanism and the exterior mechanism. But if Joker50 would have described what the handle is doing or not doing (spinning, not moving at all) it is difficult to tell if the mechanism is stripped, seized or disconnected.
If you go to the pictures above and look at the third picture down, you will notice a bluish colored metal band just to the left of the words "Bolt Slide." The arm that goes out to the inner handle plate is held to the actual blot slide with this metal band. There are tabs on the ends of both the bolt and the extension arm that contact the band so they can both actuate the lock, and will pull the bolt, but not move the other handle.
If that band is broken (usually the tabs folded over on the other side of the base plate - see the top photo), it will act exactly the same as if the rivet out on the inside handle arm is broken.
If you need a new mechanism, I have extra's (the one pictured for example)