[TowerTalk] Prosistel 61D

[Edward Seeliger <eseeliger@earthlink.net>]

I have a Prosistel 71D rotator that broke the shear pin from the motor to the 
worm gear (I verified the motor turned but the mast did not with the rotor up 
on the tower). Jay Terleski at Array Solutions referred me to Paul K9NU who 
does Prosistel repairs for him. Paul told me how to remove the motor to gain 
access to the shear pin coupling. He also recommended using the shank from an 
appropriately sized drill bit as a replacement for the shear pin. Or I could 
make a wooden box to ship the rotator to him for repair.
I removed the rotator from the tower and repaired it on the ground then 
replaced it on the tower - I had not ever taken a rotator apart before. 
There is also a description of repairing / disassembly of a Prosistel rotator 
with many pictures on the internet done by another ham. I found it by searching 
for Prosistel repair on the internet (search engines are you friend now!) - 
Rebuilding the PST 61 Rotator (rogerhalstead.com) 
(http://www.rogerhalstead.com/Gears.htm) There are now also youtube videos ane 
phtots of Prosistel rotator disassembly.
Contact Paul K9NU - he was most helpful and knowledgeable!
Happy New Year to all.
Edd - KD5M
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