[R-390] R390A qvs vu meter mod 150 type 8 repair

[Roy Morgan]

On May 24, 2015, at 8:16 PM, Larry H <dinlarh at att.net> wrote:

> Well, 1 more time:

> http://s28.postimg.org/h5d7tqsyl/IMG_6757s.jpg


> http://s28.postimg.org/54rrt0ljx/IMG_6760s.jpg


> http://s28.postimg.org/mw3e7h0yl/IMG_6762s.jpg


> http://s28.postimg.org/avhy6qtjx/IMG_6763s.jpg 

Larry,

My opinion:

You meter is held together with tubular aluminum rivets.  They are crimped/peened over at the front side.

You need to find a sharp drill that’s a bit larger in diameter than the internal diameter of the hole in the rivet and carefully drill out the front peened-over part of the rivet.  This will free up the rivet and leave a small ring that should fall out of the hole.

To get the meter apart, push out the rivets and gently pry between the rear of the bezel and the plate at the rear of the meter.  You may have to go gently and start at one point and work your way around the circumference of the case.  I expect you’ll find a rubber gasket in there that will possibly stick to both the meter case flange and the rear surface of the bezel.

NOTE: It appears to me that your meter MAY have radioactive paint on the face and pointer.  Do not be alarmed.  Just don’t lick the markings or needle.  You may want to remove the meter face (likely held onto the movement with two screws) and carefully put it aside. Don’t rub or clean the dial or pointer - just leave those parts unmolested and untouched.

THEN you will want to slide a bit of scotch tape down into the movement between the moving armature and the magnet pole pieced to dislodge any foreign matter that’s causing the trouble,

For re-assembly, you COULD use epoxy to get it back to gather, but I suggest you simply mount the thing back on the radio without the rivets.  If the flange of the case sits below the rear edge of the bezel, put some shims in there to hold it away from the panel and ensure a good fit between the case flange, rubber gasket and bezel interior surface.

If you can’t get it to run right, send it to Eldad.


Roy

 
Roy Morgan
k1lky68 at gmail.com
K1LKY Since 1958