Re: I should have known everything was working too well......

Posted by HH56 On 2013/4/29 8:43:36
Looks as if your mechanic is going to have to look so here's a couple of photos of the right front door latch mechanism to show what is happening. The photo of the latch assy was borrowed from packard1's ebay website & latch is for sale if it turns out you need a new latch assy.

The lock cylinder and pushbutton is an assembly held in the handle by a spring and retainer. The entire button assembly pushes and rotates a rectangular shaft which inserts into the latch mechanism. When the cylinder is turned to lock or unlock, the rectangular rod twists a part of the latch which moves a mechanism up or down. That up or down movement inserts or removes a block in the path of the part the button pushes against. That blocking action prevents or allows the button to push in. If the button will not push in at all that mechanism is not moving for some reason. Possible causes are the pot metal end of cylinder and button where the rod attaches has broken or the latch mechanism itself has broken.

When the button is pushed, a steel collar in the middle of the rectangular rod pushes against a part of the latch. When pressed, that piece in the latch moves a mechanism which lifts a spring loaded lever. That lever is preventing the outside toothed wheel from rotating. Once the lever is lifted, the wheel can rotate & the door can open. If you can push the button in but the door won't release the usual cause is that steel collar which is held by a setscrew to the rectangular shaft has slipped so the latch mechanism isn't pushed in far enough to raise the spring loaded lever.

Being able to open the door from the inside handle moves that blocking mechanism out of the way so would make me think the problem is in the outside handle and cylinder assy.

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