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Detroit 7260 u-joint issue #1718791
01/01/15 12:40 AM
01/01/15 12:40 AM
Joined: Nov 2011
Posts: 653
montana
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pjc360 Offline OP
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pjc360  Offline OP
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montana
I have a couple of questions regarding the detroit 7260 u-joint style. I have a 1991 dodge power ram 150 and my rear driveshaft has the detroit 7260 u-joints with the inside snap ring. I have been having problems with the u-joint being loose in the caps under the straps. And I have figured out what's goin on, I don't know if anyone else has noticed this or not, so that's why I'm asking. But I have noticed it on 3 different u-joints the precision 315 thier standard u-joint in the 7260 style and the precision 246 the super strength series in the 7260 style u-joint and the neapco 1-6300 u-joint.
What I have noticed is the notches in the caps where the snap rings go are too big, ether that or the snap rings are too small, and because of that when I install a brand new u-joint wether it be a precision 315 or precision 246 or neapco 1-6300 there is movement with the straps being on tight. Has anyone else noticed this issue?
My second question is can I tack weld the snap rings onto the caps to eliminate any movement? I have not noticed this problem with the spicer 5-1306-1 but I can only order them online and I have to wait a few days for it to arrive. I noticed I can move the snap rings side to side while they are on the caps, so I was just thinking if I put a little tack weld on the inside of the cap it wouldn't be able to move anymore and therefore the u-joint wouldn't be moving inside the yoke anymore ether. What are your thoughts?

Last edited by pjc360; 01/01/15 12:42 AM.
Re: Detroit 7260 u-joint issue [Re: pjc360] #1718792
01/01/15 01:31 AM
01/01/15 01:31 AM
Joined: Sep 2007
Posts: 14,889
up yours
Supercuda Offline
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Posts: 14,889
up yours
I would not weld anything and I would get the Spicer U joints.


They say there are no such thing as a stupid question.
They say there is always the exception that proves the rule.
Don't be the exception.
Re: Detroit 7260 u-joint issue [Re: Supercuda] #1718793
01/01/15 02:18 AM
01/01/15 02:18 AM
Joined: Feb 2003
Posts: 8,020
Pangaea
B5 Bee Offline
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Joined: Feb 2003
Posts: 8,020
Pangaea
Is there a chance the straps have been changed?...to 7290 straps?

Re: Detroit 7260 u-joint issue [Re: B5 Bee] #1718794
01/01/15 03:25 AM
01/01/15 03:25 AM
Joined: Nov 2011
Posts: 653
montana
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pjc360 Offline OP
mopar
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montana
Nope I just bought all brand new straps and bolts from Napa, they are the 7260 straps and bolts, I can clearly see what the issue is, the notch on the caps are ether too big or the snap rings are too small, I can move the snap rings side to side, so obviously that means they can move side to side when bolted up to the yoke.
I waisted 25 dollars on that precision super strength 246 u-joint, super strength lol loose right out of the box but it's a super tuff u-joint, what a joke.

Last edited by pjc360; 01/01/15 03:26 AM.
Re: Detroit 7260 u-joint issue [Re: pjc360] #1718795
01/01/15 05:12 AM
01/01/15 05:12 AM
Joined: Aug 2003
Posts: 43,259
Bend,OR USA
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Cab_Burge Offline
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Bend,OR USA
Quote:

Nope I just bought all brand new straps and bolts from Napa, they are the 7260 straps and bolts, I can clearly see what the issue is, the notch on the caps are ether too big or the snap rings are too small, I can move the snap rings side to side, so obviously that means they can move side to side when bolted up to the yoke.
I waisted 25 dollars on that precision super strength 246 u-joint, super strength lol loose right out of the box but it's a super tuff u-joint, what a joke.


It sounds like, to me, that the yoke is damaged I have a new , 2 or 3 runs on it in my Duster that runs low 10 in the 1/4 mile, Spicer 7260 pinion yoke that ended up spreading out far enough for the cup on one side slide out with the retainer on it I ended buying a forged steel Yukon pinion yoke for it My message is when parts don't fit right there is usually a reason for that problem The hard part can be finding what is wrong with which part Find it and fix it before it hurts you I wouldn't be suprised if it is the yoke or the straps being mispackaged Do the new Ujoints cups snap into the pinion yoke and stay put? If so it has to be the straps If not then it is possibly the pinion yoke The straps are there to limit front to rear movement of the cups, not side to side


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Detroit 7260 u-joint issue [Re: Cab_Burge] #1718796
01/01/15 08:22 AM
01/01/15 08:22 AM
Joined: Sep 2007
Posts: 14,889
up yours
Supercuda Offline
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Joined: Sep 2007
Posts: 14,889
up yours
Quote:

Quote:

Nope I just bought all brand new straps and bolts from Napa, they are the 7260 straps and bolts, I can clearly see what the issue is, the notch on the caps are ether too big or the snap rings are too small, I can move the snap rings side to side, so obviously that means they can move side to side when bolted up to the yoke.
I waisted 25 dollars on that precision super strength 246 u-joint, super strength lol loose right out of the box but it's a super tuff u-joint, what a joke.


It sounds like, to me, that the yoke is damaged I have a new , 2 or 3 runs on it in my Duster that runs low 10 in the 1/4 mile, Spicer 7260 pinion yoke that ended up spreading out far enough for the cup on one side slide out with the retainer on it I ended buying a forged steel Yukon pinion yoke for it My message is when parts don't fit right there is usually a reason for that problem The hard part can be finding what is wrong with which part Find it and fix it before it hurts you I wouldn't be suprised if it is the yoke or the straps being mispackaged Do the new Ujoints cups snap into the pinion yoke and stay put? If so it has to be the straps If not then it is possibly the pinion yoke The straps are there to limit front to rear movement of the cups, not side to side



Have you got some [Edited by Moparts - Family Friendly Site - Keep it clean] disease that requires you to post the [Edited by Moparts - Family Friendly Site - Keep it clean] out of emoticons or are a teenaged girl ?


They say there are no such thing as a stupid question.
They say there is always the exception that proves the rule.
Don't be the exception.
Re: Detroit 7260 u-joint issue [Re: Supercuda] #1718797
01/01/15 10:43 AM
01/01/15 10:43 AM
Joined: Dec 2003
Posts: 531
USA
5
540DUSTER Offline
mopar
540DUSTER  Offline
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5

Joined: Dec 2003
Posts: 531
USA
happy new year,Supercuda!

Re: Detroit 7260 u-joint issue [Re: 540DUSTER] #1718798
01/01/15 02:36 PM
01/01/15 02:36 PM
Joined: Jan 2003
Posts: 10,748
North Dakota
6PakBee Offline
I Live Here
6PakBee  Offline
I Live Here

Joined: Jan 2003
Posts: 10,748
North Dakota
I've never had good luck with Detroit. Spicer for me all the way.


"We live in a time when intelligent people are being silenced so that stupid people won't be offended".
Re: Detroit 7260 u-joint issue [Re: 6PakBee] #1718799
01/01/15 04:35 PM
01/01/15 04:35 PM
Joined: Nov 2011
Posts: 653
montana
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pjc360 Offline OP
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Joined: Nov 2011
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montana
I thought it could be the yoke as well, but I removed the yoke and cleaned it up very well and inspected it and there is nothing wrong with it, I know what a bad yoke looks like, I have a couple bad yokes laying around my shop right now, the snap rings wear a groove on the inside of the yoke ears and the causes movement. There isn't any significant wear from the snap rings on my yoke at the transfer case.
Just for the heck of it I took a yoke off of a dodge 208 t-case (same yoke) and I put it on and there was still movement. I'm convinced the movement is because of the cheaper u-joints. Why would it not happen with a spicer U-joint if it were a yoke issue?
Like I said when I have a spicer in there everything is tight, they just weren't lasting long because I had a bad u-joint angle, that I believe I have corrected now by lowering the transfer case with a transfer case drop kit.

Re: Detroit 7260 u-joint issue [Re: pjc360] #1718800
01/01/15 07:58 PM
01/01/15 07:58 PM
Joined: Dec 2004
Posts: 10,555
Rittman Ohio
fourgearsavoy Offline
I Live Here
fourgearsavoy  Offline
I Live Here

Joined: Dec 2004
Posts: 10,555
Rittman Ohio
Cheaper U-joints tend to be not as precise as the quality units. For example when I replace U-Joints on Yota trucks the factory cups have to be pressed into the yokes where as the parts store cups just tap into the yokes with a small hammer
I only use Neapco joints or Lakewood which is a Neapco in a red and black box.
Gus

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Re: Detroit 7260 u-joint issue [Re: Supercuda] #1718801
01/01/15 10:58 PM
01/01/15 10:58 PM
Joined: Aug 2003
Posts: 43,259
Bend,OR USA
C
Cab_Burge Offline
I Win
Cab_Burge  Offline
I Win
C

Joined: Aug 2003
Posts: 43,259
Bend,OR USA
Quote:

Quote:

Quote:

Nope I just bought all brand new straps and bolts from Napa, they are the 7260 straps and bolts, I can clearly see what the issue is, the notch on the caps are ether too big or the snap rings are too small, I can move the snap rings side to side, so obviously that means they can move side to side when bolted up to the yoke.
I waisted 25 dollars on that precision super strength 246 u-joint, super strength lol loose right out of the box but it's a super tuff u-joint, what a joke.


It sounds like, to me, that the yoke is damaged I have a new , 2 or 3 runs on it in my Duster that runs low 10 in the 1/4 mile, Spicer 7260 pinion yoke that ended up spreading out far enough for the cup on one side slide out with the retainer on it I ended buying a forged steel Yukon pinion yoke for it My message is when parts don't fit right there is usually a reason for that problem The hard part can be finding what is wrong with which part Find it and fix it before it hurts you I wouldn't be suprised if it is the yoke or the straps being mispackaged Do the new Ujoints cups snap into the pinion yoke and stay put? If so it has to be the straps If not then it is possibly the pinion yoke The straps are there to limit front to rear movement of the cups, not side to side



Have you got some [Edited by Moparts - Family Friendly Site - Keep it clean] disease that requires you to post the [Edited by Moparts - Family Friendly Site - Keep it clean] out of emoticons or are a teenaged girl ?


I suppose you have a problem, I wonder why Where's the finger emotioncon Are you suffering from to much alcholol consumption this morning perhaps You choose to read my posts and you know my style , why do you punish yourself reading them


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Detroit 7260 u-joint issue [Re: Cab_Burge] #1718802
01/01/15 11:32 PM
01/01/15 11:32 PM
Joined: Jan 2003
Posts: 16,376
D
dogdays Offline
I Live Here
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Joined: Jan 2003
Posts: 16,376
Cab, my

I am glad to wade through your emoticon forest because you usually have good information based on what seems to be a lot of real world experience.

Happy New Year!

R.

Re: Detroit 7260 u-joint issue [Re: dogdays] #1718803
01/01/15 11:50 PM
01/01/15 11:50 PM
Joined: Aug 2003
Posts: 43,259
Bend,OR USA
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Cab_Burge Offline
I Win
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Joined: Aug 2003
Posts: 43,259
Bend,OR USA
Quote:

Cab, my

I am glad to wade through your emoticon forest because you usually have good information based on what seems to be a lot of real world experience.

Happy New Year!

R.


Thanks for the compliment I'm glad to help anyone, except a liberal


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Detroit 7260 u-joint issue [Re: pjc360] #1718804
01/01/15 11:58 PM
01/01/15 11:58 PM
Joined: May 2008
Posts: 1,131
Thigh-Gap Junction
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@#$%&*! Offline
New user name, Same old jerk!
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New user name, Same old jerk!
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Posts: 1,131
Thigh-Gap Junction
Don't worry at all about the clips being thinner than the grooves, that's normal. There are precise specs for the width of the outside of the clips and the inside of the yoke. If you have a dial caliper ($10@ Harbor Freight) you can measure both to see which is wrong. Different brands and probably part numbers will have different thickness clips, don't swap them around unless you need to (hint, hint). Lastly, for the tightest fit always have the clips rotated so they seat fully in the yoke, have the open side face the drivshaft.







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