89 rear end fix

[Demose]

Hello.
What a great site!
So rear end broke best i can say and scouring for 89 7.5. 3.73 4wd rear end has been futile and exhausting.
Dont know what went wrong almost afraid to buy parts to fix it.
Bearings broke.
Have pics dont see how to post.
Axel code 86. Axle tag matches.
Also is 7.5 is 3.73 that means its 4wd?
Again it appears gonna have to just replair it n not replace.
THANKS
Dale

 

[racsan]

should be a easy axle to find, just be a 3.73 , it doesnt matter if its from a 2wd or 4x4, sure you can rebuild it but theres a lot to do so it lasts, proper rolling tourque of the pinion, gear backlash, tooth contact. Much easier & cheaper to find another rear axle assembly, especially if you dont have the tools youll need to do the job.

 

[scotts90ranger]

And to make things easier you can look for newer Rangers to source an axle from, like racsan said just look for 3.73's, the '93 and newer axles are I think an inch wider so as long as you have room for that it will bolt up, just take the U joint yoke off the rear drive line if '90 or newer

 

[Demose]

And to make things easier you can look for newer Rangers to source an axle from, like racsan said just look for 3.73's, the '93 and newer axles are I think an inch wider so as long as you have room for that it will bolt up, just take the U joint yoke off the rear drive line if '90 or newer

Found 3.83 7.5 from a 99.
Hope to be rolling soon.
Not sure what to do about extra inch.
Remove yoke?

 

[Curious Hound]

Not sure what to do about extra inch

I wouldnt worry about it.

Remove yoke?

If the pinion has a yoke for the u-joint. The newer yoke might be for a different size u-joint. So you would swap it and put the old yoke on the new pinion. Same thing if it has a flange. The bolt pattern might be different. Some flanges have both bolt patterns drilled in them.

 

[Demose]

Found 3.83 7.5 from a 99.
Hope to be rolling soon.
Not sure what to do about extra inch.
Remove yoke?

Oops. 3.73.
Thank you very much.

 

[scotts90ranger]

The extra width just makes the tires stick out a little, if you are near stock configuration you should have plenty of room for that, I'm running an Explorer axle that's even wider on my '90 and I have room enough for my 35" tires width wise...

 

[Demose]

And to make things easier you can look for newer Rangers to source an axle from, like racsan said just look for 3.73's, the '93 and newer axles are I think an inch wider so as long as you have room for that it will bolt up, just take the U joint yoke off the rear drive line if '90 or newer

The guy doung the work doesnt understand the part about removing yoke. That is hard to get off...then what?
Thank you !!!!

 

[Curious Hound]

The guy doung the work doesnt understand the part about removing yoke. That is hard to get off...then what?
Thank you !!!!

In the picture below, over toward the right side, the label “u joint” is pointing to the yoke that holds the u joint on the drive shaft. The yoke in this picture is bolted to a flange that is held on the pinion shaft by a big nut.

not to be disrespectful, but if your mechanic does not understand that, you may want a different mechanic.

 

[Demose]

Thank you again!

 

[Demose]

I wouldnt worry about it.



If the pinion has a yoke for the u-joint. The newer yoke might be for a different size u-joint. So you would swap it and put the old yoke on the new pinion. Same thing if it has a flange. The bolt pattern might be different. Some flanges have both bolt patterns drilled in them.

 

[Demose]

Cant get yoke off...yet.
break drums bigger.
Do you know how much torque to put back on yoke?

 

[Demose]

He is not my mechanic just my friend. Underprivileged so we help ea other out.
It is more often me not understanding what he is asking.
Sorry.
He just asked torque.

 

[Curious Hound]

The pinion nut torque is special. When the axle is being assembled and set up, the pinion nut is tightened to set the proper preload on the pinion bearings, squeezing them together with a special "crush sleeve" between them. They are tightened until a certain amount of torque is required to rotate the pinion by itself with nothing else in the differential housing. You don't want to do that. for your case, the best thing is to mark the pinion nut and shaft before disassembly so that you can tighten the nut back to that mark. If you have already removed the nut without marking it, Then just tighten it as best you can. I would recommend maybe about 150 ft-lbs. That is less than it takes to crush the sleeve, so you won't overtighten the nut. It would be good to use Loc-Tite (red) on the threads. DO NOT use an impact wrench to tighten the pinion nut. You may overtighten it.

Best idea, don't remove the yoke or flange unless you have to because the size is different. Get your new axle in place and see if everything bolts up. Sometimes, you don't have to touch the yoke or flange. Or, if the yoke is bolted to the flange like the picture I posted, just replace the yoke but leave the flange in place.

 

[Demose]

Thanks again. We are rolling. But kind of sideways...