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Author Topic:   Bent rear end axle
jonr
Dirt Roller

Total posts: 19
posted July 26, 2004 08:12 PM  
I drive an 84 olds cutlass with a stock rear end. I was in a wreck this weekend, and took a direct hit to the left rear. It completely trashed the rim. I wanted to take the rear axle out because I am pretty sure that it is bent as well. My problem is that I can not get the axle out. I have used crow bars, porta-power, hammers and have had no luck. I took out the other side to make sure I was doing everything right, and it popped right out. I have two questions: 1) How do I get the axle out? 2)How difficult is it to transfer the ring and pinion out of this rear end to another rear end. I had to search for a while to find this rear end ratio. Thanks in advanced.

cobb
Dirt Maniac

Total posts: 131
posted July 26, 2004 08:33 PM  
did you forget to take the clip out???

iowatoolman
Dirt Freak

Total posts: 369
posted July 26, 2004 08:49 PM  
sometimes the splines break and are a ***** to get out if not check that you got the c clip out?

marshalr
Dirt Maniac

Total posts: 148
posted July 27, 2004 09:39 AM  
I bet the splines are twisted. I keep a bar in the trailer for this purpose. smaller than the axle, solid bar is best. Very carefully align the bar going through the axle tube from the other side, sledge hammer at this point. You want to drive the axle back through, but not touch the ring gear carrier. With two people is easiest. One on the sledge, one checking alignment of the bar.

jonr
Dirt Roller

Total posts: 19
posted July 27, 2004 02:01 PM  
C Clip is out. Triple checked that the other day. One of the reasons that I took out the other axle to prove that I remembered how. Assuming I get the rear end out, how difficult is it to transfer the ring and pinion gears to another housing?

stic8
Dirt Full Roller

Total posts: 69
posted July 27, 2004 05:14 PM  
when you finally get the other axle out change gears over insnt that hard in my opinon first remove the bolts holding the carrier 4 bolts besure you keep any shims and bearing races on the side they come come out on i put a clean rag on floor or bench to put ever piece in order on sorry first turn pinion back and forth to get a idea on how much backlash is between the ring and pinion there is a way to measure but we dont take the time because we are pretty close ever time and we havent wipe out any gears in 3 years from time to time we change gear ratios or due to bent axle tubes then you need to take pinion out turn it to get the idea on how much drag is on the bearing this is called the preload then transfer parts over you may need to take pinion race out to match bearing sometimes different there is a crush collar on pinion my opinion is to reuse it we do because of changing it from time to time other guys at our track measure the collar and get a steel sleeve to replace it with to always get the same amount of preload good luck i think i covered it all one other note you may need to increase or decrease shims for carrier to fit properly and get proper backlash

racer038
Dirt Maniac

Total posts: 111
posted July 27, 2004 06:07 PM  
If you can't come up with the bar marshalr mentioned, you may try renting the axle puller from Autozone or other places. We have successfully pulled axles out with them.

stic8
Dirt Full Roller

Total posts: 69
posted July 28, 2004 06:40 PM  
the type of bar we use is a old pry bar with a point on one end other end cut off the point fits nicely into the end of the axle its about 4ft long

[This message has been edited by stic8 (edited July 28, 2004).]

Footlead
Dirt Roller

Total posts: 24
posted July 28, 2004 10:16 PM  
Get a long rod or stout bar and feed it into the rearend where the other axle came out...run it through the tube put it on the stuck axle and beat it out with a biggggg Hammmmmer.I bet the rearend is bent and you will never be able to get another axle back into the carrier after you get that one out. Been there and done that.

jonr
Dirt Roller

Total posts: 19
posted July 29, 2004 04:23 PM  
The axle puller from Autozone did the trick. Rear end tube is deffinitely bent. I have talked to a few people that have said that changing the gears is a pain. Espically dealing with the pinion gear. Does anyone else agree?

DirtDobber
Dirt Maniac

Total posts: 113
posted July 29, 2004 08:21 PM  
I disagree!
Bent'em, broke'em
Yea you'll find that it is no big deal.
You will never hear the whine 'cause your in the dirt w/open exhaust HehehHEhe
stic8 covered it for ya. If you want more detial on how to set the lash look in a Motor Manual.
When you get to the gears you will see the wear pattern on the ring gear (the larger one.) You can get very close to that by moving all of the parts from the old rear end to the new one. To check rinse the gears with thinner before you go back together. After you get it all bolted up you can use some colored grease like red and put a couple of fingers full on the ring. turn the drive line part (slow and boring but that will give you a pattern to look for on the ring gear.
Now I mostly worry about the spacers on the side to adjust the pattern. I picked up a hand full from a gear place that rebuilds these for you.

Good Luck !!

stic8
Dirt Full Roller

Total posts: 69
posted July 30, 2004 06:56 PM  
jonr first time you do it it maybe slightly diffucult but once you get the hang of it its simple and saves money to do yourself like dirt said a shop that rebulids rearends great to get shims from or just about any tech at the dealership this one guy i know has a whole box of extras i borrow the box for a day used a micrometer on them to measure then mark and keep a bunch / if you dont know anyone ask your friends/family if they do chances are they do and maybe you can make a new friend full of knowledge

bigcityracer
Dirt Freak

Total posts: 431
posted August 01, 2004 10:06 PM  
I was trying to swap gears a 2.29:1 to 2.41:1 from my bent rearend and failed. I purchased a complete unit and installed it. So whatwas hppening I would boltthe pinion gear in and then put the ring gear assembly in and when I started tightening the bearing caps the pinion would not turn. I tryed several times and quit. I was discussed and found it much easier to just swap the entire unit.

stic8
Dirt Full Roller

Total posts: 69
posted August 02, 2004 05:16 AM  
bigcity that was because you needed different shims to go next to carrier assy to move it to the left to get the clearence you needed from the pinion different shims are required when changing gear sizes because of the way the gears mesh

maniac motors
Dirt Maniac

Total posts: 128
posted August 02, 2004 06:55 PM  
its not too hard to do just hade to do same thing to my car this last week.except mine got hit so hard it shattered the axle inside the bearing and i was done(also had to replace three wheels pushed motor forward 1 inc and new bumper and last years cover lots of pounding with a bfh too on fender and quarter) just look at bearings on pinion when you take it out if they are good use em.i like to use the races out of the old rear too but not neccessary if they are good in new housing.put new pinion seal in and tighten up yoke till nuts stops tightening. i think 20 inch pounds to rotate the yoke is right i just do it by feel.just look close at area on new axles where brg rides to be sure its not damaged.also need about .006" backlash in gears.then go out and do what i did to make me feel better : WIN!!! that really helps take out the pain of all the weeks work

bigcityracer
Dirt Freak

Total posts: 431
posted August 02, 2004 07:44 PM  
Where might I get different size shims?? Is there a web page, where I could purchase them?

stic8
Dirt Full Roller

Total posts: 69
posted August 02, 2004 08:10 PM  
bigcity iam sure you can buy them but i not sure where , do you or anybody you now know a tech at dealership that where i got my collection of them //// you could also check any shop that specialize in rebuild rearends slip the guy a little bit of cash($10-20) and maybe he will give you a couple of hand fulls or buy him lunch then you can mic them to get the sizes for them

[This message has been edited by stic8 (edited August 02, 2004).]

rusty9cab
Dirt Full Roller

Total posts: 38
posted August 06, 2004 05:58 PM  
Bigcity, you can buy shim kits from summit or jegs, just about anybody that sells ring and pinion kits.

Jonr, this does not work all the time but if you get another rear end that is exacty like the one you have; eg, 10bolt, 12bolt; you can bolt your carrier and all the shims you took out into it and the gear should line up the same. BE ADVISED you should still check the gear and make sure it is lined up correctly. Hope this helps.

gould
Dirt Forum Champ
Total posts: 730
posted August 08, 2004 07:10 AM  
why dont you try to staighten the rearend out. weve done it to our 9". its not that tough useing a portapower, chains and a 4" X 4" piece of wood.

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