Repairing Damaged Axle Shaft Threads
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- เผยแพร่เมื่อ 14 ม.ค. 2019
- While taking apart the E36 M3 rear end I picked up I made what can only be described as a major rookie mistake and whacked one of the axles with the axle nut partially threaded on (I don't know why I did this) while in the back of my head knowing the axle was not going to remove that easily. This naturally messed up the threads to the point where removing the axle nut was a problem.
After removing the damaged axle nut and the axle from the wheel hub (with a 12 ton gear puller) I assessed the damage and cam up with a plan. The two common axle nut sizes for BMW axle shafts are M24x1.5 or M27x1.5mm. Seeing as these are M3 axles they use the large axle nut.
I ordered a rethreader die and was able to successfully fix the damaged threads to the point where a new axle nut threads nicely. There are limits here of course as to how much damage you can fix and still get the axle nut to hold torque. However, a majority of the threads damaged are not under torque load when the axle nut is torqued to 300Nm. This should be a successful repair and we'll know that for sure when the car goes back together in a few months time.
Here is the special die I used to fix the threads:
www.amazon.com/gp/product/B00...
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This helps alot messed up some threads on my pinion in my diff when I was pressing it out pray for me!
Thanks for posting this! Learned a lot and definitely put me on the right track to repair the threads on my ‘07 Yaris Axle - very much appreciated Sir!
i did something similar to what you did 5 years ago regarding a lawn mower. i haven't fixed it yet. i don't have 5% of your skill but appreciate the "i can admit when i make a mistake!" stuff. good luck in the future.
Thank you for putting up this video
I did the same with my 328i. I called BMW dealership and they told me the part was discontinued. I was like wtf. I ordered aftermarket and it was too long even the one from autozone. I ordered the part you showed hope it will work. Thanks for the video.
I am in the same boat on a transfer case shaft. I know the feeling... thanks for the video and your time. Cheers.
Were you able to find one for your transfer case shaft?
Yes I went to a welding machine shop and they cleaned the threads up for me so I lucked out. It was the first time removing the nut and next time I will ensure I use a better punch to un ping the nut.
Mother ... :( I did the same thing today but oh well! I guess this is how you learn, Bought some large dies and will fix like you did thanks for the video!
The axle splines on the E70 front hubs are tight as well. The splines are slightly twisted towards the base to prevent clicking/popping which create the tight fit. You can loosen the splines up with a A V style bastard file. Always polish the splines and spray with PB Blaster or WD 40 when done. Never use grease on the splines as this can scrape off when torquing down the axle nut and hydro lock between the axle and bearing flange. JTC tools taiwan makes a hub seperator/installer tool with the 27mm/1.5 adapter to pull the axle thru the hub. Never ever use impact when installing a bearing hub or any ball joint as the bearing surfaces will be compromised with flats on the balls and races..
This was great help . Thank you
im having trouble with my e36 axle nut coming loose, im on the 3rd nut now and 2nd bearing just in case, but im torquing up to spec but a few days later the nut has worked loose again! yes i am knocking the nut end into the indents in the shaft, any tips there??
Bro. You have to lubricate the shaft. And its a turn forward half turn back. To prevent damaging the spindle worse
Awesome video, exact same situation. Can't even source a new shaft. How do I identify the correct size for a 2015 L405 range Rover?
Just did this to my 05 Nissan X trail today... watching eagerly
.
Edit: trying to fix my axel threads tomorrow.. can you comment back if there was any off camera work you had to do to repair the threads?
Hi buddy i have the same problem with my axle shaft the nut is 35 mm do you think the tread is 35 mm or smaller?
Awesome video!
The same happened to me today as I was trying to push back the shaft and get the hub and bearing out on my E70 X5.
Can you tell me which size die it’ll be for the X5?
Thanks!
Interesting video! Hey bud, I've an old car and it's axle nut keeps getting loose. The other day I went to a mechanic and got him to fix a pin over the nut through the notches/slots present in the axle tip. Now I notice the pin is getting compressed, almost getting cut because the nut is trying to come off again. Is it an issue with the threads? Or just a bad nut? Because the mechanic actually put a new nut in recently. He told me the old nut had bad threads because it was actually put in place with the help of a washer.
Great video. I can't even get mine started. First 1-2mm compromised.
I was thinking a.file, b.hacksaw
Thoughts?
Thanks.
I messed up the threads on my FWD cars rear threads. I tried to find a replacement axle but couldnt find the part anywhere. So my only option was to repair it. I had to rethread the threads to the end right to where the nut stops against the hub. The nut went in ok and i torqued it to 10kg-m (72 ft-lb) like the manual says. Im a bit worried about using a rethreaded axle spindle since i had to rethread the whole thread even where the nut tightens against the hub.
It all really depends on how badly the threads were damaged. What I highlighted in this video is an okay example of what can be repaired since the portion of the threads that was damaged don't receive any torque load from the axle nut since the nut doesn't actually tighten down on them. I would be cautious about repaired threads where the nut clamps down on and threads that receive a high torque specification. In the case of my E36 the axle nut is torqued to 420Nm so if there were threads damaged badly where the nut is torqued I would have opted to replace the axle entirely.
Meat of the shaft
I may need a similar Die for my 09 ml350 w164, not sure if this works! any tips or idea ?
great video man!!
2001 BMW 325i? what size do I need
What size do I need for a 2016 nissan maxima
How do you do it without the axle spinning
Are they all right hand threads?
Dam bro I did the same thing to the wife's car I will definitely be trying this
You always should turn counter clockwise after doing the first cuts and use cutting oil
Agreed and good tip. I did use cutting oil (you can see it on top of the tool box) but I didn't have any chips while rethreading the axle. If I was cutting brand new threads for sure backing off (or even coming off entirely to clean the threads and die is needed) would be neccesary. I primarily chased the damaged threads of which there were only a few. A new axle nut was not going to do that as is would not thread on straight.
Where i can get that?
Damn you might of saved the day for me lol...hopefully that is, if I can find a "rethreader die" for 07 edge rear wheel axle that seats 2 32mm size nuts. One acts as a lock nut then 2nd nut is torqued to 258 ft pounds if I'm not mistaken. My first and last time doing this job here. Now to see if I can find that 32mm re-threading die....here goes 🤪
Keep in in mind the size of the nut (the drive size) is not the same as the thread size and pitch. You need to measure both of those dimensions before ordering any kind of die.
@@GarethFoley I believe the thread pitch is 1.25 and the nut is 12 point as well if I'm not mistaken. And the nuts are 32mm Ford Edge SEL AWD specs for rear wheel axle nuts are 32mm front are 36mm
I have a 30mm nut on my axle and need to rethread the axle. If I use the m22 x 1.5 to rethread it, will the axle still take a new 30 mm nut or will I need a different size after the rethread?
You're not changing thread size or thread pitch with this repair. You will use the same size nut.
I wish you showed the axle before you repaired it
I made the same mistake in my M37X
I replaced the hub bearings, hub, rotors and handbrake but not the axle nut. So I put everything back together until I got the nut replacements. After replacing the rear driver side nut today, I noticed that the rear passenger side nut would rotate but won’t come out at all. Any idea on how I could remove it?
Sounds like the threads have stripped entirely off the axle shaft. You need to cut the nut away from the axle/hub unfortunately if that's the case.
Gareth Foley I used a dremel to cut the nut off and took it off. I guess i over torque the old nut and stripped the nut because all the tread got stuck in between the thread on the axle. I lucked out and got away with just having to clean the axle.
I am replacing the hub and bearing on the rear of my 2007 E350 sport and I think I may have messed up the thread because every time I go to screw the nut it only goes to a certain point and then spins in the same place. Do you think this would fit my axle thread? If not, do you happen to know hoe I can find out the size of thread on the axle shaft?
I believe the axle nut thread size Mercedes frequently uses is M24x1.5mm so you'd need a different rethreader die than what I used here. If the damage is mild you can also use a regular thread file since the thread pitch is 1.5mm.
Gareth Foley thank you so much for the quick reply! I’m going to have to see if I can get a die that works. Could you tell me which brand you used?
@@stevendyminski8702 The re-threader die in the size I think you need can be had from Amazon for ~$30:
amzn.to/2VBMdnO
Alternatively, you may also want to look at something like this which is a thread file and can help repair similar damage + it has other thread pitches which may make it useful again in the future. I have these as well for thread repairs:
amzn.to/39h0cDF
@@GarethFoley Thank you so much! You are the man!
I took my 94 325i daily beater to some local tire shop to get a new bearing. Now my car is making strange new noises near the wheel. I went back to the shop and told em. They pulled it back in, on the drive-on elevated lift this time. I saw him fiddling with my outer cv boot. It was off! He was trying to slip it back on with the band still on.They charged me $400+ and gave me my keys with the boot off!
He repaired it with a zip tie then he decided to use a hose clamp. Ithink they overtightened the axle nut. How much would it cost to fix everything back the way it was with a new properly installed bearing? This way I know how much to ask for in small claims court.
Just did the exact same rookie mistake, and I'm not a rookie. Trying to fix the threads with a blade. LOL. Where do you get these repair nuts? Thanks.
This specific one I bought from Amazon, p/n DWTSMH27X1.5. But I've seen similar tools offered at McMaster Carr or MCS Direct.
Omg I messed mine up on a 2002 RX300. The nut is a 30mm socket so I guess I need a 30mm die? I’m going for the hex not the round. Thanks
The drive size of the nut and the thread size and pitch are two different things. If it's a 30mm nut it's probably an M22x1.5mm thread size and pitch. You'll have to measure to confirm for certain. If the nut is damaged you'll want to just replace the nut. If the threads are damaged in the axle you'll want to use a thread chasing die like I used vs a cutting die.
Gareth Foley ok I thought the first one was the same width as bolt. The thread pitch is 1.5 since I do I see about 6.5 threads per cm. Thanks for the heads up about the M22. I will find out.
How do I find the size for a 2005 bmw 330i axle
Thread size is M27x1.5 for sure.
I need to do this tomorrow
Wish I saw this video before spending 600$ for a new axle... I did the same thing with mine when doing a bearing job. I still have the axle, so possibly fix the threads and resale to make some of my cash back.
Zo Ketch same 😂
Your prob better off replacein it man.. Eventually this will prob have a problem due to wear an tear.
will this work on a bmw 2001 330 ci ???
Yes. 330Ci's use the same size axle nut so would use the same M27x1.5 rethreader die.
What size is the nut is it a 22mm or 24 mm
The die is 50mm +/- a fraction of a mm. There is no special driver for it since it's not intended for cutting threads.
Will it work for a 435i axle
F3X 435i axles are M24x1.5 threads IIRC. Would need to use a smaller die but the process to fix some of the damaged threads would be the same.
Will This Same Rethread Took Work For a 2007 Chrysler Sebring ?
A similar style rethreaded die will work for sure but can't say for certain that this exact one I use will. Most FWD cars use smaller axle nuts, wouldn't be surprised if it's an M22x1.5. You would just need to confirm the actual thread size and pitch first.
Gareth Foley Alright Man I Appreciate The Response I Got A Little Desperate As Well So Started Hammering And Forgot To Put The Nut on A Few Threads So Now The First 2 Threads Are Pushed Down 🤧
@@cloudrhezii No problem. It happens more often than you think. You should also be safe to reuse the axle since only the first few threads got messed up. when the axle nut it torqued down it's really loading the bottom most threads vs the outer threads. What's the exact submodel of your Sebring? I may be able to tell you the exact size of the threads and link you to something that will work.
Gareth Foley It is a 2007 2.7 V6 Abs Chrysler Sebring id really appreciate it if you do Definitely gonna leave a sub !
@@cloudrhezii Thanks for the sub. The front axle nut factory number is p/n 6105190AA which according to my info is an M22x1.5 thread size which is pretty common. Lang tools makes a rethreaded die for this specifically. Found one on Amazon with free shipping:
Lang Tools 54-2679-0005 M22x1.5 Spindle Retheader Die www.amazon.com/dp/B01BA1HSDE/ref=cm_sw_r_cp_apa_i_qgBqDbJD5CESG
Question: Can I use the dye to replace a stripped nut...particularly if the threads are not aggressive enough on the replacement nut, and the axel although repaired, still has shallow threads.
...if you have a bad one that the die won't fix...a good machine shop can fix threads good as new for less than the cost of another axle shaft...
It definitely depends on how bad the damage is. In general I wouldn't do this if the threads on which the axle nut is torqued to are damaged. The leading edge threads in this case are safe since the axle nut is not pulling on those threads once torqued.
cut a new nit in 1/2 restore threads backwards
Cutting Oil?
Didn't use cutting oil, just some 5W40. I was straightening the threads at the beginning of the shaft vs cutting them.
@@GarethFoley that good cos I got to do same n not got any oil. Thanks
I have that same problem rn bro, 🙄
Same here!
A New nut, a chaser die nut & cutting fluid almost $50 bucks! I could have got a new axle for $54!
I also forgot to mention, cars are a pain in the ass. Just to put it nicely.