Subaru Wheel Bearing Replacement
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Ongoing studies of vehicle repairs and service procedures have lead to the development of a new rear wheel bear- ing replacement procedure for the fol- lowing vehicles: • 1998-2003 Forester • 1993-2003 Impreza (excluding WRX) • 1990-1999 Legacy Additionally, several design changes have been made to increase the dura- bility of the original equipment caged ball bearings in all types of operating conditions. The installation of sec- ondary dust shields to the axle (August 2000 vehicle production), and changes to the wheel bearing itself represent some of the results of this continued study. The most recent pro- duction changes were: • Grease material changed, • Treatment changes to the rear ball bearing and inner race, • Initial preload applied in produc-tion changed. These changes took place effective August 21, 2001, starting with the fol- lowing VINs: • Impreza Sedan: • Impreza Wagon: • Forester: To reduce the possibility of repeat premature failures, Subaru has intro- duced a new procedure to service the rear wheel bearings of the models listed above that entails replacing the rear wheel bearing on the vehicle. This new procedure eliminates the heavy forces needed to service the rear wheel bear- ings that occur when using a hydraulic press. This smooth, low force installa- tion eliminates the chances of deform- ing the wheel bearing housing and increases the efficiency of the repair. A new special tool kit has been developed to perform this procedure on the vehicle (Kent Moore J45697). The 2*517136 2*817579 2*735724 new tools are designed to work only with tapered roller bearings. The complete repair procedure can be found in Subaru Service Publication Booklet MSA5TT0201. Subaru has also authorized the installation of a taper roller-type bearing, part number 28016AA030, as the replacement part on the applicable Impreza and Forester models. This taper bearing is the same bearing that is applicable to 1999 model year and prior Legacy models. If you have diagnosed a failed rear wheel bearing, repair it with the new procedure and check the condition of the remaining side. Replace only if needed. The new genuine Subaru rear wheel bearings are not to be packed with grease of any kind. The bearing is ready to install out of the box. Wheel Bearing Installation Procedures The following is a summary of the revised wheel bearing installa- tion procedures. A PDF version of Booklet Number MSA5TT0201, containing the complete proce- dure, photographs and tool list- ings is available for download on the End Wrench website at www.endwrench.com. Do not attempt this procedure without the proper tools. They may be purchased from Kent-Moore by calling 800.345.2233. 1 Remove the wheel. 2 Remove the caliper mounting bolts. 3 Secure the caliper. Place a mark on the hub and rotor so that they can be reassembled the same way they came apart. 4 Remove the rotor. 5 Unstake and remove the axle nut. 6 Remove the lateral link bolt. 7 Push the bearing housing out- ward and slide the axle out. 8 Set the axle below the lateral link bolt and reinstall the lateral link bolt. Note: Inspect the axle for any deep scratches, pitting or damage dust shield. Replace if necessary. 9 Connect the slide hammer to the wheel-bearing hub. Do not use the original wheel lug nuts. Note: After threading on the five lug adapter to the slide hammer, thread on the nut and tighten the adapter to the nut.
Ongoing studies of vehicle repairs and service procedures have lead to the development of a new rear wheel bear- ing replacement procedure for the fol- lowing vehicles: • 1998-2003 Forester • 1993-2003 Impreza (excluding WRX) • 1990-1999 Legacy Additionally, several design changes have been made to increase the dura- bility of the original equipment caged ball bearings in all types of operating conditions. The installation of sec- ondary dust shields to the axle (August 2000 vehicle production), and changes to the wheel bearing itself represent some of the results of this continued study. The most recent pro- duction changes were: • Grease material changed, • Treatment changes to the rear ball bearing and inner race, • Initial preload applied in produc-tion changed. These changes took place effective August 21, 2001, starting with the fol- lowing VINs: • Impreza Sedan: • Impreza Wagon: • Forester: To reduce the possibility of repeat premature failures, Subaru has intro- duced a new procedure to service the rear wheel bearings of the models listed above that entails replacing the rear wheel bearing on the vehicle. This new procedure eliminates the heavy forces needed to service the rear wheel bear- ings that occur when using a hydraulic press. This smooth, low force installa- tion eliminates the chances of deform- ing the wheel bearing housing and increases the efficiency of the repair. A new special tool kit has been developed to perform this procedure on the vehicle (Kent Moore J45697). The 2*517136 2*817579 2*735724 new tools are designed to work only with tapered roller bearings. The complete repair procedure can be found in Subaru Service Publication Booklet MSA5TT0201. Subaru has also authorized the installation of a taper roller-type bearing, part number 28016AA030, as the replacement part on the applicable Impreza and Forester models. This taper bearing is the same bearing that is applicable to 1999 model year and prior Legacy models. If you have diagnosed a failed rear wheel bearing, repair it with the new procedure and check the condition of the remaining side. Replace only if needed. The new genuine Subaru rear wheel bearings are not to be packed with grease of any kind. The bearing is ready to install out of the box. Wheel Bearing Installation Procedures The following is a summary of the revised wheel bearing installa- tion procedures. A PDF version of Booklet Number MSA5TT0201, containing the complete proce- dure, photographs and tool list- ings is available for download on the End Wrench website at www.endwrench.com. Do not attempt this procedure without the proper tools. They may be purchased from Kent-Moore by calling 800.345.2233. 1 Remove the wheel. 2 Remove the caliper mounting bolts. 3 Secure the caliper. Place a mark on the hub and rotor so that they can be reassembled the same way they came apart. 4 Remove the rotor. 5 Unstake and remove the axle nut. 6 Remove the lateral link bolt. 7 Push the bearing housing out- ward and slide the axle out. 8 Set the axle below the lateral link bolt and reinstall the lateral link bolt. Note: Inspect the axle for any deep scratches, pitting or damage dust shield. Replace if necessary. 9 Connect the slide hammer to the wheel-bearing hub. Do not use the original wheel lug nuts. Note: After threading on the five lug adapter to the slide hammer, thread on the nut and tighten the adapter to the nut.
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