I have a Tri-Ex tower which is similar design. The Tri-Ex has a 40:1 gearbox
and things are geared VERY low.
I have been able to hand-rotate the pulley in the absence of AC power to
move things. If you had to lower the entire tower this way it would take a
LONG time (plan on having your next birthday party out at the tower) but it
can be done if all else fails. (This assumes the HD is like the Tri-Ex in
that it has a pull-up + pull-down cable system...I don't know, and please
don't assume on my part...and never expose yourself or your tower to some
I have thought about having a machinist weld some kind of shaft or flange on
my tower's gearbox, as a back-up system in event of loss of AC power, but
have never done so. I believe it would work in a pinch OK with a hand drill
or other back up motor. Be careful.
----- Original Message -----
From: "Robert Harmon" <email@example.com>
To: "Dick Dievendorff" <firstname.lastname@example.org>
Cc: "towertalk reflector" <email@example.com>
Sent: Monday, January 17, 2011 12:22 PM
Subject: Re: [TowerTalk] HDx89MDPL winch motor stopped eorking
> I have a HDX589MDPL also. I am very interested in what you find.
> Please keep us advised. I believe these towers have a worm reduction
> gearbox and we can crank the the pulley wheel on the gearbox around by
> to raise and lower it. I haven't yet had to do this with mine, anybody
> on the forum done this with their HDX ?
> On Jan 17, 2011, at 9:34 AM, Richard (Rick) Karlquist wrote:
>> Try swapping the time delay relays to see if
>> the down relay went bad. They are socketed.
>> These are low reliability components.
>> "nothing happens" isn't the capacitor. If
>> that goes, the motor will make a lot of noise
>> and not move.
>> Rick N6RK
>> On 1/17/2011 7:58 AM, Dick Dievendorff wrote:
>>>> I went out on Friday afternoon to lower the tower. Nothing happened
>>>> when I flipped the switch. I checked the plug and GFI breaker, it seems
>>>> to have juice
>>>> I plan to return in Tuesday and begin diagnosis. I'll check for AC
>>>> power at the outlet, and inside the box mounted on the tower. Beyond
>>>> that I'm in new territory. Motor start capacitor? How does one test
>>>> How would I go about bringing the tower down at least partway manually?
>>> Dick, K6KR
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