Differential Pinion Flange Repair – BMW F Body

, ,
Pinion Repair

Differential Pinion Flange Repair – BMW F Body

The other day our new customer brought their BMW 528i xDrive to us and were able to perform a Differential Pinion Flange Repair. To back up a little, our customer had their BMW at the dealership about 5 days ago and were already having issues days after picking it up. For example, the issues included a heavy knocking check engine light, driveshaft flex joint (guibo) issue, thermostat faults, and a number of other problems.

Repairs

We were about to diagnose the thermostat, knocking faults, and other issues. The only thing we’ll say is, use a torque wrench at 19 Ft Lbs / 26nm is necessary when replacing spark plugs. For the flex joints the dealership did tell them that the front and rear joints needed replaced. We removed the exhaust, then the driveshaft flex joints, and last the driveshaft supports. We then noticed that the differential input flange was the cause of the guibo failure. As you can see from the video below, there was an obvious issue.


 

Firstly, we removed the Differential Pinion Flange 48mm nut, buffer seal, and rubber washer. Secondly, we pulled the repair kit that we keep in stock. The BMW Part No. is 33127607158 / 33 12 7 607 158. Additionally, this is in the BMW part catalog as “Differential Cover Repair Kit – BMW (33-12-7-607-158)”. The full install guide is located here.

Notes:

  • Read this entire guide in the link above. You MUST NOT move the larger 12pt nut on the differential or serious damage may occur to the differential.
  • The only way to obtain a new flange is to order an entirely new driveshaft.

After all the repairs were complete, we test drove the vehicle. Now their BMW drives very nice now.

For more information on how to get your BMW in the shop for some service, or maintenance, contact us at 425-254-0627. You can also schedule an appointment or receive a quote by clicking here. Meister Werks European & Import is located one block south from The Renton Landing in Renton, WA, across the street from the former Boeing Store and at the westside of the Paccar / Kenworth plant.

/by