[R-390] PTO Problems

Jon Schlegel ews265 at rochester.rr.com
Mon Nov 5 11:12:50 EST 2007


Roy,

I'd be interested in a copy of the info on Simple 
Green.  Please. Mail away.  Thank you!

The steel roller is also frozen.

Also, as I had just emailed Renée, I was cleaning 
parts I made a new unfortunate discovery.  After 
removing the surface scale, I found that what 
looked like a three washers corroded together was 
actually a caged thrust ball bearing in the form 
of a copper cage (the center "washer") with 
little steel balls pressed into a radial set of 
holes.  I'll presume that the steel balls were at 
one time free to rotate <G>.  Now they're just frozen rust balls.

I cooked up a solution for the broken fiber 
roller on the swing arm but this one's beyond 
me.  Now I see that the stainless roller is also 
frozen (Thanks Roy).  If I try to coax that into 
turning I know it's shaft will break off.  Looks 
like it's time to scavenge another PTO for parts or repair.

Jon

At 09:44 AM 11/5/2007 -0500, you wrote:
>At 08:46 PM 11/3/2007, Jon Schlegel wrote:
>>Hi all,
>>
>>I've discovered another possible problem with 
>>this (Motorola) PTO regarding the corrector stack follower.
>>...
>>  When the arm is dialed to a spot where the 
>> corrector stack is flat meaning no change in 
>> cam height, there is about 10 or 15 thousandths radial play of the arm.
>>
>>Is this play normal?  Are there parts missing?
>
>Jon,
>
>No, Yes.
>
>There should ba a spring that maintains pressure 
>between the steel roller and the corrector stack 
>(Or between the steel roller and whatever 
>presses against the OTHER side of the corrector plates.)
>
>(I'd have to open one up to refresh my memory, 
>so if this is either incorrect, or partly correct, I apologize.)
>
>The little steel roller SHOULD ROLL FREELY!
>
>Roy
>
>
>
>- Roy Morgan, K1LKY since 1959 - Keep 'em Glowing
>13033 Downey Mill Road, Lovettsville, VA 20180
>Phone 540-822-5911   Cell 301-928-7794
>Work: Voice: 301-975-3254,  Fax: 301-975-6097
>roy.morgan at nist.gov --




More information about the R-390 mailing list