[TowerTalk] Roller bearings, Pins, Tower ID

[Pat Barthelow]

Folks,

I have found  a potential problem, on an older crankup tower, that I am 
refurbishing.   The aluminum roller-guides  at each section overlap, have 
aluminum straight pin-axles.  The pins are about  3/8" dia by about 1.5" 
long, and are secured by (steel) circlips, or (steel) cotter pins  The 
circlips and cotter pins  are  corroded and need replacing, possibly  the 
complete pin-axles need replacing.  The tower is a fairly old Triex.  Triex 
has apparently evolved over the years into Tashjian towers.  The tower looks 
very much like an HDX  555  The trellis work (seen in the picture below)  
should peg it.  The center to center corner distance on the bottom 20' 
section is 24.5".
See:
http://groups.msn.com/towertrailers/shoebox.msnw?action=ShowPhoto&PhotoID=4

for a closeup photo of the rotor mounting plate, through the trelliswork.
Also, a base view of the tower:

http://groups.msn.com/towertrailers/shoebox.msnw?action=ShowPhoto&PhotoID=8

Are there any exact replacement roller pins available?   Also what is the 
original model number for the Tri-Ex tower?

73, DX, de Pat Barthelow  AA6EG
(831) 646-0388    aa6eg at hotmail.com