E46 BMW Social Directory E46 FAQ 3-Series Discussion Forums BMW Photo Gallery BMW 3-Series Technical Information E46 Fanatics - The Ultimate BMW Resource BMW Vendors General E46 Forum The Tire Rack's Tire Wheel Forum Forced Induction Forum The Off-Topic The E46 BMW Showroom For Sale, For Trade or Wanting to Buy

Welcome to the E46Fanatics forums. E46Fanatics is the premiere website for BMW 3 series owners around the world with interactive forums, a geographical enthusiast directory, photo galleries, and technical information for BMW enthusiasts.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us.

Go Back   E46Fanatics > Tuning & Tech > DIY: Do It Yourself

DIY: Do It Yourself
Post here to share or improve your wrench turning skills! All BMW E46 DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

Thread Tools Search this Thread Rating: Thread Rating: 15 votes, 5.00 average. Display Modes
Prev Previous Post   Next Post Next
Old 02-29-2004, 05:24 PM   #1
Registered User
Join Date: Jan 1970
Location: Bay Area
Posts: 1,891
My Ride: 323ci
Post Differential DYI instructions

Differential installation instructions. These instructions are only as a guide for people to swap differentials. Please read through all the instructions before attempting to install on your own. I take no responsibilities for any inaccuracies or problems/damage you may encounter from using these instructions. Please consult your shop manual. Sorry about the poor photos. I wasn’t planning on doing a differential write up. Most of the pictures were taken after I installed the differential. That said… lets begin.

1. Remove rear sway bar. (Check DYI section in E46 fanatics)

2. Remove Exhaust hangers and let it dangle. Unscrew the 2 rubber hangers on the exhaust. 4 M8 nuts (you'll need the room for the next step.) (Fig 1.)

3. Remove Rear suspension reinforcement brace. There's also a heat shield on the exhaust side (2 bolts). Remove the heat shield first. (Fig 2.) The Brace is held down by 6 bolts. Remove the inner 4 small bolts first. Then remove the 2 outer bolts. (Fig 3) (Tightening torque - M12 nut 57 ft-lbs, M8 bolt 8.8 grade 15 ft-lbs, M8 bolt 10.9 grade 22 ft-lbs)

4. Disconnect the drive shaft from the differential input flange. 4 M10 Torx Bolts. (Fig 4) Pry the drive shaft off the differential input flange with a screwdriver. (Tightening torque - M10 Torx bolts 61 ft-lbs)

5. Disconnect the right and left drive axels from the differential output flanges. Each axel has 6 M10 external Torx bolts. (Fig 5) (Suspend the right/left axels with a wire, Fig 6) (Tightening torque - M10x46 59 ft-lbs)

6. Remove the Differential. Support the differential with a transmission jack. The Differential is held down by 3 bolts. 2 M12 bolts in the front, 1 M14 bolt on the rear. Remove the 2 front ones first (Fig 3), then remove the rear one (Fig 7). (Tightening torque – M12 Bolts 70 ft-lbs, M14 Bolt 128ft-lbs) (when reinstalling, insert all 3 bolts finger tight. Tighten the 2 front bolts first, then tighten down the rear bolt).
Work the differential off the car by pulling it towards the rear end. Slowly lower the jack as you pull it out. (you need 2 people for this part.)

7. Install your new rear differential. Flow the steps in reverse.

I filled up the Differential with new differential gear oil before I put it on the car. It’s just easier that way. (differentials always come without differential oil) I just used Mobil 1 Synthetic 75/90 since that's what they had at Pep Boys. (oil specification BMW SAF-XO synthetic oil. 0.95 US qt) The drain/fill plugs use a 14mm hex wrench. it's kinda hard to find. I used a nut that was 14mm in diameter instead. (any hardware store will have one for about 8 cents) (Tightening torque 14mm plug 52 ft –lbs).
The input/output flanges use External Torx bolts. You need an E12 external torx socket. You can buy the sockets at Sear (Sears item #00947733000 Mfr. model #26750)








sycE46 is offline   Reply With Quote
Ads by Google

Guests, get your FREE E46Fanatics.com membership to remove this ad.

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Censor is ON

All times are GMT -5. The time now is 06:08 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
(c) 1999 - 2016 performanceIX Inc - privacy policy - terms of use