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      01-13-2020, 10:08 PM   #1
hC1001
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Diy request: differential bushings.

Hi, im looking for a diy to replace my diff bushings. Ive read the tis and it seems to outline these steps(going off memory, might not be exact):
-Remove exhaust.
-Remove heat shield.
-Remove support brace.
-Driveshaft needs to be disconnected from the diff and supported.
-Passenger rear axle shaft needs to be removed.
-Driverside rear axle shaft needs to be disconnected from the diff and supported out of the way.
-Drop subframe ~30mm using longer bmw bolts.
-Unbolt diff and remove.
-Change diff bushings.

I plan to go with powerflex bushings for ease of install. Are there any shortcuts to my list? Do i really need the special tool to remove the rear axle shafts? Will two flat heads on opposite sides be able to remove the axles from the diff?

Thanks for any help or tips.
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      02-24-2020, 03:24 PM   #2
richf80
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Quote:
Originally Posted by hC1001 View Post
Hi, im looking for a diy to replace my diff bushings. Ive read the tis and it seems to outline these steps(going off memory, might not be exact):
-Remove exhaust.
-Remove heat shield.
-Remove support brace.
-Driveshaft needs to be disconnected from the diff and supported.
-Passenger rear axle shaft needs to be removed.
-Driverside rear axle shaft needs to be disconnected from the diff and supported out of the way.
-Drop subframe ~30mm using longer bmw bolts.
-Unbolt diff and remove.
-Change diff bushings.

I plan to go with powerflex bushings for ease of install. Are there any shortcuts to my list? Do i really need the special tool to remove the rear axle shafts? Will two flat heads on opposite sides be able to remove the axles from the diff?

Thanks for any help or tips.
ECS just came out with diff bushings and there is a guide on their page.

http://bd8ba3c866c8cbc330ab-7b26c6f3...stallation.pdf
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      02-24-2020, 04:14 PM   #3
hC1001
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Quote:
Originally Posted by richf80 View Post
ECS just came out with diff bushings and there is a guide on their page.

http://bd8ba3c866c8cbc330ab-7b26c6f3...stallation.pdf
Thanks, ill take a look.
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      02-25-2020, 03:11 PM   #4
hC1001
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They are dropping the entire subframe to swap out the bushings. Not sure if thats easier or not from the BMW instructions, its nice they didnt need to remove the rear axles. I think im gonna try the BMW way of lowering the subframe a little bit but leave the rear axles connected. Hoping there is enough room for me to drill out the rubber bushing and then use a hacksaw or something to cut the bushings metal sleeve. Since the PF bushing is a two piece design, i hope there is enough room to squeeze them in. Dont have to bother using a bushing remover/installer.

Will create a DIY if its successful.
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      02-25-2020, 03:21 PM   #5
jacobe92
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Diff.

DIY + Hacksaw = Doesn't sit well with me. My .02. GL
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      02-25-2020, 03:57 PM   #6
hC1001
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Quote:
Originally Posted by jacobe92 View Post
DIY + Hacksaw = Doesn't sit well with me. My .02. GL


I've done it before with success on other cars. Its to weaken the bushing sleeve so you can hammer a flat head on the sleeve to deform it and make it smaller for extraction. Wont know the best course of action until im in front of it. I think i would be able to support and lower the diff to give some space for a threaded rod to press the bushing out, id prefer that.
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      03-03-2020, 08:07 AM   #7
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Quote:
Originally Posted by jacobe92 View Post
DIY + Hacksaw = Doesn't sit well with me. My .02. GL
This is a routine procedure for replacing bushings. Cutting the sleeve with a hacksaw only takes a couple minutes and saves tons of effort trying to press the bushing out. Once itís cut it generally slides out easily.
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hC100118.00

      03-05-2020, 09:01 PM   #8
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Quote:
Originally Posted by FlyingLow78 View Post
This is a routine procedure for replacing bushings. Cutting the sleeve with a hacksaw only takes a couple minutes and saves tons of effort trying to press the bushing out. Once itís cut it generally slides out easily.
I think you are on the right path, I am also going to do a similar thing to get mine out !!
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