Re: Crush sleeve usage on a pinion yoke 489 case
[Re: JL2]
#1890754
08/13/15 01:22 AM
08/13/15 01:22 AM
|
Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
|
Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
|
Man I am always full of ignorant questions because I read about, ask questions about whatever I need to know on my Mopar. , so now I will ask ya'll, Mopar lovers who I know will give me the best answer. (1) ask a hundred Q's, thats our purpose in life (here on Moparts) (2) yes we have the best answers!
live every 24 hour block of time like it's your last day on earth
|
|
|
Re: Crush sleeve usage on a pinion yoke 489 case
[Re: JL2]
#1890832
08/13/15 08:46 AM
08/13/15 08:46 AM
|
Joined: Dec 2014
Posts: 6,272 ohio
ruderunner
master
|
master
Joined: Dec 2014
Posts: 6,272
ohio
|
Pacor is correct for by the book replacement. But if you are replacing just the seal, the punch marks for reference work just fine. A different yoke makes the punch marks useless though. Why are you changing the yoke? Maybe just get a conversion u joint?
Angry white pureblood male
|
|
|
Re: Crush sleeve usage on a pinion yoke 489 case
[Re: JL2]
#1891095
08/13/15 04:42 PM
08/13/15 04:42 PM
|
Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
About to go away
|
About to go away
Joined: Sep 2007
Posts: 14,889
up yours
|
Smartest answer is to replace the crush sleeve with a spacer and shims http://www.manciniracing.com/man834ax489c.htmlEspecially if you plan to do a gear change or whatever in the future. It's a bit more expensive than a new crush sleeve, but not that much more so consider it and talk to your mechanic about which he'd prefer from a labor aspect.
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: Crush sleeve usage on a pinion yoke 489 case
[Re: Pacnorthcuda]
#1891105
08/13/15 04:52 PM
08/13/15 04:52 PM
|
Joined: Jan 2003
Posts: 26,545 Rio Linda, CA
John_Kunkel
Too Many Posts
|
Too Many Posts
Joined: Jan 2003
Posts: 26,545
Rio Linda, CA
|
Many people have replaced a yoke seal by simply stamping nut position and returning to same.
The problem with replacing the entire yoke, with the above method is that the point of reference is lost.....you're screwed.
Not really, the depth gauge end of calipers can be used to compare the thickness of the old yoke and the new yoke. If the new yoke is thinner, just tighten the nut a little bit more depending on the difference; if the new yoke is thicker, just tighten to the punch marks.
The INTERNET, the MISinformation superhighway
|
|
|
Re: Crush sleeve usage on a pinion yoke 489 case
[Re: JL2]
#1891211
08/13/15 07:25 PM
08/13/15 07:25 PM
|
Joined: Dec 2014
Posts: 6,272 ohio
ruderunner
master
|
master
Joined: Dec 2014
Posts: 6,272
ohio
|
If you want to get really technical...
The yoke can be changed but you need to measure the turning torque of the axle (drums off!) and write that number down. Then change the yoke, tighten the pinion nut untill you match the measured turning torque AND reach minimum torque spec on the pinion nut. If you reach turning torque before tightening torque your stuck though, it must come apart for a new crush sleeve (the old one has collapsed too far)
There's lots of extra friction when spinning the diff and shafts so you need accurate and repatable torque wrench for rotating torque.
Due to the gotchas in this process,I don't reccomend it.
Angry white pureblood male
|
|
|
Re: Crush sleeve usage on a pinion yoke 489 case
[Re: JL2]
#1891458
08/13/15 11:43 PM
08/13/15 11:43 PM
|
Joined: Aug 2006
Posts: 2,565 God's Country Maryland
GODSCOUNTRY340
master
|
master
Joined: Aug 2006
Posts: 2,565
God's Country Maryland
|
Haven't you guys learned how to re-use a crush sleeve yet? Take the sleeve, slide it on a piece of pipe, tap around the crush area with a hammer. This will elongate the sleeve making it able to crush again. Reinstall it, torque to spec, good as new. We're only talking thousandths of an inch here.
I love the smell of Deer guts in the morning, it smells like... VICTORY!
|
|
|
Re: Crush sleeve usage on a pinion yoke 489 case
[Re: JL2]
#1891535
08/14/15 01:33 AM
08/14/15 01:33 AM
|
Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
|
Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
|
I mighta missed something (didn't read all the posts!) but if a conversion ujoint (one or both) will take of this I would absolutely go that route as opposed to pulling the pinion yoke. there's no (weakness) downside to that
live every 24 hour block of time like it's your last day on earth
|
|
|
Re: Crush sleeve usage on a pinion yoke 489 case
[Re: JL2]
#1891583
08/14/15 02:56 AM
08/14/15 02:56 AM
|
Joined: Jan 2003
Posts: 75,282 A gulag near you.
JohnRR
I Win
|
I Win
Joined: Jan 2003
Posts: 75,282
A gulag near you.
|
Thanks for the answers guys, it really helped me understand that was not what I wanted to hear, but needed to hear. I am not capable of doing that job personally but could probably find someone who will not rob me to badly to get it done. The reason that I am wanting to change the pinion yoke is that I installed a 727 and slip yoke needs to be changed to the bigger one that fits, and I thought that if I didn't use the same size u-joints throughout the shaft that I would have a weak spot, even with a cross u-joint at the pinion. I do have decent traction so I wanted to try to do it right without tearing into the third member. So who makes good strong cross joints? There are 727's that use the small u joint also ...
|
|
|
Re: Crush sleeve usage on a pinion yoke 489 case
[Re: JL2]
#1891586
08/14/15 03:00 AM
08/14/15 03:00 AM
|
Joined: Jan 2003
Posts: 75,282 A gulag near you.
JohnRR
I Win
|
I Win
Joined: Jan 2003
Posts: 75,282
A gulag near you.
|
You know I hate making it sound like a big deal about a crush sleeve, but I do not have a clue on this, as you are aware of. Can it be changed from behind the pinion yoke or does the ring and pinion have to come out and go in that way? I can't seem to find a breakdown diagram on this. Thanks again. The chuck needs to be disassembled , the sure grip has to come out and the pinion has to come out , to get to the crush sleeve .
|
|
|
|
|