Re: {Collins} KWM2-A problem

Andy....... I have had a problem on S line transmitters when the thrust bearing on the exciter tuning shaft becomes loosened, which results in erratic tuning of the exciter.

The thrust bearing adjustment is on the rear of the exciter tuning rack........ perhaps it has loosened slightly, which can result in erratic tuning when adjusting the exciter knob.

You might check that to assure it is snug and properly grounding the shaft. A squirt of De-Oxit might be in order as well.
Good luck.    73/jim/W0JJL

From: "Andy" <andy.cairns@xxxxxxxxxxxx>
Sent: Saturday, July 03, 2010 3:59 AM
To: "Collins Reflector" <collins@xxxxxxxxxxxxx>
Subject: {Collins} KWM2-A problem

Good Day to the Group,

Sometime ago I listed a problem I was having with my KWM2-A and intermittent
transmission based around the exciter knob and the tuning of the rig.

I cleaned up the entire inside bits and pieces, as recommended, and for a
while it was fine, but now the problem is back again and one has to fiddle
and wiggle the exciter knob to often get full output.

Not being an extremely technically oriented person, I cannot understand how it is that this can produce the problem it does and I ask myself is there no other way around this problem? Maybe someone who knows can explain to me why this happens and if there are any permanent fixes to this, besides replacing
all the parts. Maybe they are badly worn and need to be replaced ?

Best 73



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