I've had only one case where the aluminum pulley itself was damaged. In all
other cases, when the bearing froze, the whole pulley assembly rotated
around the bolt holding it in place. Take a look at the bolt to see that it
is not gouged or has developed a serious groove.
Ray,
N6VR
On Tue, Mar 12, 2013 at 12:48 AM, Jim Thomson <jim.thom@telus.net> wrote:
> US Tower HDX-689 Sheave replacement
>
> The UST HD-689 uses aprx 22 pulleys in total. All are aluminum, with an
> internal bearing.
> If the bearing is trashed, the soft aluminum pulley is probably trashed
> too. No point in replacing
> a bearing, and still use the trashed al pulley. If the pulley is worm
> down, you are better off to
> just replace both the pulley and bearing.
>
> I think it was dino that was telling me last year that each
> pulley/bearing assy was aprx $150.00 EACH.
> The story I got was that UST makes the aluminum pulleys in house, and
> presses the bearings into place too.
>
> You might want to keep any debris/gunk off of any of the lift cables, or
> it will get ground into the soft aluminum
> pulleys. I’d keep the cables well lubricated with that gunk that k7lxc
> recommends to use. The local shipyards
> use the same stuff..and they buy it in 55 gallon drums.
>
> Jim VERF
>
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|