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Porsche 911/930 Front Bearing Replacement

 
Step 1 - Jack Up Car


Securely jack up the car.



Car on Lift

 
Step 2 - Remove Wheel


Remove the wheel from the hub.



Remove Wheel

 
Step 3 - Remove Bearing Dust Cap


Remove the bearing dust cap using a slide hammer, a puller, and a cap bolt.



Slide Hammer Setup

Dust Cap

Puller on Dust Cap

Pull off Dust Cap

 
Step 4 - Separate and Hang Brake Caliper


Separate the brake caliper from the strut assembly and hang using big zip ties or a piece of cord.

BE CAREFUL not to strain the brake line.



Caliper Assembly

Open Pad Clip

Remove Pads

Remove Caliper Bolts

Hang Caliper

Calilper Hung

 
Step 5 - Remove Hub Nut


Using a 6mm Hex shaft, loosen the cap nut that secures the hub nut and remove the hub nut.



Hub Nut & Tools

Remove Hub Nut

 
Step 6 - CAREFULLY Remove Hub Assembly


Careful not to stress the brake line, pull caliper back and remove the hub assembly from the strut.

Watch out for the outer bearing and the washer as they will fall out as you remove the hub assembly.



Pull Caliper Back

Hub Removed

Caliper Hanging

 
Step 7 - Remove Bearing Seal


Remove the bearing seal from the back of the hub.



Bearing Seal on Hub

Pry Seal from Hub

Bearing Seal Removed

 
Step 8 - Remove Old Bearing and Clean Hub


Remove the old bearing and clean all the old grease from the hub.



Remove Old Bearing

Clean Hub

 
Step 9 - Remove Bearing Race


Tap out the old bearing races with a hammer and a punch or drift.



Tap Out Races

 
Step 10 - Press in New Bearing Races


Press in the new bearing races. Be careful not to press against the hub lug nut studs. Use a block of hardwood or metal to press hub.



Block of Hardwood

Hub on Press

 
Step 11 - Grease New Bearings and Install


Pack the new bearings with grease and line the inside of the hub with grease. Be sure you've cleaned the hub thoroughly before you begin.



Clean & Pack Bearing

 
Step 12 - Install New Bearing Seal


With new bearing greased and installed, clean bearing seal seat and install new bearing seal using a hammer and block of wood.



New Seal Ready

Installed Seal

 
Step 13 - Install Hub on Strut Assembly


Careful not to stress brake line, install hub on the strut assembly.



Hub Ready to Install

Seat Hub on Strut

 
Step 14 - Install Outer Bearing, Washer & Hub Nut


Using a 6mm hex key, turn the hub nut until the washer can only be move by prying on it with a screwdriver.



Rotate with Key

Pry Washer Test

Torque to 11FtLbs

 
Step 15 - Install Caliper on Strut


Install caliper on strut and torque cap bolts to 51 FtLbs.



Torque Caliper

Cut Hanger Line

 
Step 16 - Install Dust Cap


Install bearing dust cap.



Install Dust Cap

 
Step 17 - Install Wheel


Install wheel on hub.



Wheel on Hub