[TowerTalk] Older TX2 repair

[Dave Harmon]

Rusty....that's great.

Tom is a helpful guy and knows his products....he has helped me considerably
with a Hy-Tower.

If I were you, I would also replace the indicator rheostat and wiper while
you have it apart.
It's a cheap part and not hard to do.

Regards

Dave Harmon
CCA 97-535
K6XYZ[at]sbcglobal[dot]net
Sperry, Ok.

-----Original Message-----
From: towertalk-bounces at contesting.com
[mailto:towertalk-bounces at contesting.com] On Behalf Of Russell Hill
Sent: Thursday, October 16, 2008 10:26 AM
To: Russell Hill; towertalk at contesting.com
Subject: Re: [TowerTalk] Older TX2 repair

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 at earthlink.net>
To: <towertalk at 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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