Hi Folks-- a followup on my earlier post:
Several folks sent me helpful responses, And Gene S. was kind enough to
invite me to phone, which I did. (Thanks, Gene)
>From one suggestion, I phoned MFJ, who said yes, they owned but did not
operate Hy-Gain, so I phoned Hy-Gain.
Tom in Tech support/Parts gave me some guidance on pulling the motor and
checking out the gears-- not hard to do. Pull the 3 bolts holding the motor
mounting plate, lift the motor, and the gears come right out. No needs to
mess with unsoldering/soldering in confined space, which was what
intimidated me to begin with.
As he thought, one of the gears had a broken tooth which was sliding around
in the grease and binding things up.
So I have ordered a replacement gear, and a packet of their special secret
sauce all weather grease for the rebuild.
Hopefully that will do it!
Thanks to all,
Rusty, NA5TR
----- Original Message -----
From: "Russell Hill" <rustyhill@earthlink.net>
To: <towertalk@contesting.com>
Sent: Tuesday, October 14, 2008 3:06 PM
Subject: Older TX2 repair
> Hello, All:
>
> My older CDE TX2 is is stalling after only a few degrees of movement in
> either direction, and the direction indicator quit moving.
>
> I checked all the voltages and resistances in the controller, all good,
> and made the same checks on the rotor itself, also all good.
>
> I took upper bell off the rotor, removed the upper ball bearing retainer,
> found the spur and pinion gears resisting movement after a few degrees.
> Then I removed the ring gear, so the motor and gear train could move
> freely.
>
> In this configuration the motor would turn a bit in one direction before
> stalling,and might turn a bit in the other direction, or would stall in
> either direction without moving. I made sure the stop lever was not
> making contact in either direction. I could hear the electric motor
> trying to run, but not making it.
>
> Also, the wipe arm on the pot on top is not turning, even when the motor
> was moving before stalling. If I moved the arm on the pot the controller
> direction indicator works just fine.
>
> I conclude the motor is toast, possibly because the shaft in the motor is
> broken or damaged.
>
> At this point I have gone as far as I feel qualified to go. This seems to
> be more than just a loose connection or an easily accessible gear
> replacement.
>
> Before I ship it off to Starkville for factory repair, does anyone have
> any suggestions? Or will Hy-Gain, Starkville, even work on the older CDE
> units? Should I do anything else? Does someone else work on these older
> units, perhaps a ham supporting his hobby?
>
> Thanks,
> Rusty, NA5TR
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