[Milsurplus] Trimmer Cap Problem

[hwhall at compuserve.com]

 I fixed that problem in my RBM-5 twice in the following way...  
The rotor had a pin through the shaft to restrict rotation to 180 degrees. That pin also stopped the shaft from moving any further, and yet the finger shaped spring still had some tension applied. The stator was attached to the capacitor by being soldered into two gromets in the ceramic cap body. I just heated the gromets and pushed the stator backwards a bit until even spacing was restored between rotor & stator blades. Receiver tuned up okay and I've had no more trouble from those caps.

 


 Wayne
WB4OGM

 

-----Original Message-----
From: Rob Flory <robandpj at earthlink.net>
To: milsurplus <milsurplus at mailman.qth.net>
Sent: Mon, May 16, 2011 3:23 am
Subject: [Milsurplus] Trimmer Cap Problem


Hi,
I have experienced the same thing with the ones in the Navy RBM/RBS receiver.  A 
compression-fit sleeve fails, allowing the contact spring on the end of the 
shaft to push the shaft endwise, shorting the plates together.  I have been able 
to shift the shaft into the correct position and solder the no-longer-compression-fit 
sleeve into its proper position.  

Good luck,

RF
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