Scotty,
Below is a “cut-and-paste” from an old email I sent last year. This is how I
replaced the main lift cable on the HDX-589mdpl, but I’m sure the same basic
idea can be used.
Can be done with tower standing.
…..be careful…
de steve ve6wz.
> Lali,
> I have replaced the main lift cable twice on my UST-589.
> The last time was about 6 years ago, and my memory is not perfect but I can
> give you the "basic idea". I don't recall all the details, but you should get
> the idea as you proceed.
> I have replaced the cables once when the tower was laying down, and another
> time standing up. It is easiest to do while standing.
> Not sure if yours is up or down.
>
> 1. Find or get a 6X6' fence post timber or similar large block and stand it
> **inside** the base, standing on the concrete against one leg, and position
> it
> so that the first section will stop on it when cranking the tower down. (by
> the
> "first" section, I mean the biggest section being lifted by the lift cable).
> The idea is to "rest" the tower on this block when the tower is cranked down.
> If I recall I used about a 3' or 4' timber. The tower cannot be fully
> retracted
> but almost all the way down.
> **do not crank the tower down yet or you will break the pull-down cable**
>
> 2. **block all the sections with heavy gauge pipe** very carefully for safety
> in case anything breaks (you don't want to get your hans sliced off) and then
> reach inside and **disconnect the pull down cable** which is attached to the
> top section.
>
> 3. **pull out the pipe blocks**, and then engage the motor to crank the tower
> down.....the main lift cable will go slack when it stops on the supporting
> timber. The tower is now resting on the support timber.
>
> 4. **re-block the tower for safety** and replace the main lift and or sheaves
> as needed. I pulled the new lift cable into the tower using the old one to
> make
> sure I got it right.
>
> If your tower is lying down, the same procedure applies, but you may need to
> use a come-a-long to remove the tension.
> The key is to remove the pull-down cable.
>
> good luck, and be careful.
>
> de steve VE6WZ
>
>
> On 2016-06-27, at 4:26 PM, Lali wrote:
>
> > Dear All,
> >
> > I am looking for a step by step instruction how to replace the #9 base
> > cable.
> > I talked to USTOWER but they don't have anything like that.
> >
> > Thanks,
> >
> > Lali, VE3NE
>
> On Jul 7, 2017, at 8:53 AM, Scotty <scotty@ashiko.com> wrote:
>
>
> Needs some advice on the procedure to replace the main cable on a telescoping
> 3-section tower that is motorized with positive pull-down. It is a US Tower
> TX455MDP and was bought 24 years ago from US Tower, back in 1993. Many
> strands are broken and there is no doubt this main cable must be replaced. I
> investigated the other cable and it is fine and will not be replaced. I have
> removed the old main cable. I have a 100 foot long replacement cable. 3/16
> inch 7 x 19 GAC with the loop and thimble with compression sleeve installed
> on one end.
>
> Advise is requested or a step by step procedure to install the new main cable
> would be great.
>
> Scotty W7SW
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>
>
>
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