R52 double pivot on clean grain auger - The Combine Forum

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post #1 of 5 (permalink) Old 12-31-2016, 02:41 PM Thread Starter
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R52 double pivot on clean grain auger

I spotted one of the u joint caps on the double pivot at the bottom of the auger in the grain bin was gone when I wanted to grease the perks. Since I needed a new auger, I replaced it the double pivot and also also the bearings on the jack shaft that turns it. When I went to turn the auger it would turn 1/2 way and then would bind up as both of the u-joints will hit on their housings . In looking at the old one you could see that it hit on itself also and wore out the housing probably causing the cap to come free from the shock of hitting itself. Both the old and new pivot joints will not bend as far one way as the other way. Has anyone else had this problem or have a way to stop this from happening?

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post #2 of 5 (permalink) Old 12-31-2016, 04:17 PM
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We had that double u-joint replaced at the start of the season on our R62. Part way through the season I noticed that one of the grease fittings was missing.. almost impossible to replace ! now I'm wondering if I have the same problem...gives me something to look forward to in the New Year.

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post #3 of 5 (permalink) Old 01-09-2017, 06:35 PM
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We replaced that double u-joint in our R52 this summer. When we installed the new joint, we noticed it was knocking at one point in the rotation where the casting in the two opposite yokes of one end where hitting. You wouldnt notice it if the auger was lowered but was obvious in the raised position. we ended up talking a bit off with a grinder until there was nothing touching. just seems to be a casting issue. Is this possibly what you are dealing with?
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post #4 of 5 (permalink) Old 01-10-2017, 02:41 PM Thread Starter
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I ground out a little on each side of the thread end yoke for a little more clearance. I did this for both ends. That made it just "catch" instead of completely stopping the rotation by hand. I finally loosened the bolts for the jackshaft bearing closest to the double u-joint and found when I turned it it wanted to move slightly up and down on every half rotation. I forced the bearing holder up a little and tightened the bottom bolt and it feels like it won't bind or catch so I tightened the other bolts down. Feels pretty good with hand rotation so will go with that. Never had a bearing holder do that before!
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post #5 of 5 (permalink) Old 01-11-2017, 03:58 PM
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I have attached photo of latest u-joint if helpful, fits on R62 through s series I believe. there are no grease points only caps.
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