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Old Sun, Dec-29-2013, 03:46:17 AM   #4
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Default Re: DIY: E46 M3 detailed subframe reinforcement, gear fluid changes, and bushing refr

Step 106: Replace the exhaust system gaskets, hardware, and rings with new parts. Reinstall the heat shields. Reinstall the exhaust system back into the car. Reinstall the plastic guards.

Step 107: Bleed the two rear calipers with new fluid to get any air out of the lines that may have entered when they were opened.

Step 108: Reinstall the rear v-brace. Torque each of the 3 bolts to 44 ft-lbs.

Step 109: This step is optional. Place a drip pan or jug underneath the differential fill and drain plugs. They are located on the passenger side of the differential. Remove both plugs and crush washers. Use a 14mm hex bit socket to remove them.

Step 110: After the differential has finished draining, replace the drain plug along with a new crush washer (PN: 07119963355). The drain plug is the plug closest to the bottom of the differential.

Step 111: Refill the differential with 3 bottles of BMW differential fluid 0.5 liter (PN: 83222282583). Fluid will begin to flow out of the fill plug when the differential is full.

Step 112: Replace the fill plug back into the differential along with a new crush washer (PN: 07119963355). Torque both the fill and drain plugs to 48 ft-lbs each.

Step 113: Double-check everything underneath the car and ensure all parts have been replaced back on the car. Resinstall the wheels and torque the lug bolts/nuts to 88 ft-lbs. Lower the car and go for a short drive to check everything out. If you changed the fluids, remember to do a few figure 8's and U-turns to properly coat the internals of the differential.

Originally Posted by Schitzel View Post
^ this guy and his sick nasty DIYs!!!
Thanks man. It's coming along. By far the longest and most complex DIY I've put together to date.
For those apprehensive about DIYing...

"The most difficult part of figuring out a car, the engineering, has been done. Repairs and maintenance are simply taking parts apart and putting them back together again." - bimmerfan08

Last edited by bimmerfan08; Mon, Jan-14-2019 at 03:57:19 PM.
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