GM 3768022; shield for door pull mechanism

[Gary B.]

Thanks,


Gary

[Gary B.]

Re: GM 3768022; shield for door pull mechanism

I think I answered my own question.


After finding a photo of the back side of an original door panel on the DB, I think the orientation of the plastic disc (shield) is clear, based on two observations. First, on the back side of the door panel notice the elongated hole (toward the upper right in the photo) (which has a elongated chrome bezel on the non-visible side) for the door opening shaft has 4 tangs holding it in place. If the convex side of the plastic disc, with its outward pointed center area, is facing the door panel, it will scrape against or get get caught on the upper and lower tangs every time the knob is pulled back and forth. Also notice the witness marks of the large OD of the plastic disc.


So, I think the concave side of the plastic shield must face toward the interior of the car, so that the periphery of the plastic disc is the only part that comes in contact with the door panel, and that contact is remote from the bezel tangs. And the pointed center on the convex side of the disc comes in contact with the base of the shaft that the knob screws onto.


This also tells us that GM intentionally made the plastic shield with a convex and a concave side. If it was flat, the process of opening the door from the inside would soon destroy the plastic shield from rubbing on the sharp edges of the tangs on the back side of the bezel.


Gary

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[Gary B.]

Re: GM 3768022; shield for door pull mechanism

What I still don’t understand is why the AIM doesn’t say which way the shield is installed. The lack of an installation direction in the AIM suggests the production line workers could install it either way. But surely the outward pointed center on the convex side would hit those tangs if installed with the opposite, concave surface against the vapor barrier.

The shield was used from 1964 thru at least 1967. Has no one else ever dealt with this question?

Gary

[Gary B.]

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