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<strong>Audi</strong> <strong>Quattro</strong> <strong>Rear</strong> <strong>Wheel</strong> <strong>Bearing</strong> InstallationES2561175Schwaben®<strong>Audi</strong> <strong>Quattro</strong><strong>Rear</strong> <strong>Wheel</strong> <strong>Bearing</strong><strong>Service</strong> <strong>Kit</strong>B6/A4 and B7/A4This tutorial is provided as a courtesy by ECS Tuning.Proper service and repair procedures are vital to the safe, reliable operation of all motor vehicles as well as the personal safetyof those performing the repairs. Standard safety procedures and precautions (including use of safety goggles and proper toolsand equipment) should be followed at all times to eliminate the possibility of personal injury or improper service which coulddamage the vehicle or compromise its safety.Although this material has been prepared with the intent to provide reliable information, no warranty (express or implied) ismade as to its accuracy or completeness. Neither is any liability assumed for loss or damage resulting from reliance on this material.SPECIFICALLY, NO WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR ANY OTHER WARRANTY ISMADE OR TO BE IMPLIED WITH RESPECT TO THIS MATERIAL. In no event will ECS Tuning, Incorporated or its affiliates be liable forany damages, direct or indirect, consequential or compensatory, arising out of the use of this material.
<strong>Audi</strong> <strong>Quattro</strong> <strong>Rear</strong> <strong>Wheel</strong> <strong>Bearing</strong> <strong>Service</strong> <strong>Kit</strong>Schwaben® ES2561175<strong>Quattro</strong> B6/A4 and B7/A4Product DescriptionThe Schwaben® <strong>Audi</strong> <strong>Quattro</strong> <strong>Rear</strong> <strong>Wheel</strong> <strong>Bearing</strong> <strong>Service</strong> kit removes and installs rear wheelbearings on B6 and B7 <strong>Audi</strong> <strong>Quattro</strong> models that use a pressed-in bearing. The tool may beused with the rear knuckle (bearing holder) installed in the car, or with the holder removed fromthe vehicle and mounted in a special jig or vise.This tutorial demonstrates general procedures on an <strong>Audi</strong> B6 A4.The bearing removal kit includes a large, threaded jack screw, large and small circular pressplates, and a hollow receiver cup, plus press plate attachment screws and press bolts.The horseshoe-shaped press plate is a special addition to this kit, allowing you to remove thedrive hub from the wheel bearing, on or off the car.receiver cupcircularpress plateshorseshoeplatejack screwnut and thrustwasherpress boltshoreseshoe plateattachment boltshorseshoe platePage - 2Address: 1000 Seville Road, Wadsworth, OH 44281 Phone: 1.800.924.5172 Web: www.ecstuning.com
<strong>Audi</strong> <strong>Quattro</strong> <strong>Rear</strong> <strong>Wheel</strong> <strong>Bearing</strong> <strong>Service</strong> <strong>Kit</strong>Schwaben® ES2561175<strong>Quattro</strong> B6/A4 and B7/A4Tools We Used• long breaker bar• miscellaneous ratchets, extensions• hanger to support caliper• common screwdriver• 5mm hex driver• 8mm hex driver• 17mm hex head driver• M10 long reach triple square• 17mm socket• 18 mm socket• 18mm combination wrench• 22mm socket• 32mm box wrench• 32mm socket• T27 Torx bit• impact gun• wire brush• hammer• pry barTightening Specifications• shoulder bolt - M14 - 115Nm; M16 - 200 Nm (Both to be torqued, then turned anadditional 180 degrees with vehicle resting on wheels)• CV joint-to-drive axle hub (M8 - 40Nm; M10 - 70Nm)• caliper carrier to bearing housing (70Nm (+90 degrees) always replace bolt.• bearing housing lower bolts/nuts (65Nm)Note: This tutorial is broken into two sections: a photo pictorialstarting on the next page and a Quick Reference section showinghow the press tool is installed on the bearing housing, beginningon page 12. Final assembly procedures are listed on page 16.Page - 3Address: 1000 Seville Road, Wadsworth, OH 44281 Phone: 1.800.924.5172 Web: www.ecstuning.com
<strong>Audi</strong> <strong>Quattro</strong> <strong>Rear</strong> <strong>Wheel</strong> <strong>Bearing</strong> <strong>Service</strong> <strong>Kit</strong>Schwaben® ES2561175Step 1Use a small prying tool, remove the wheel centercap.Apply the hand brake so the car cannot move.<strong>Quattro</strong> B6/A4 and B7/A4Step 2With the car sitting on the wheels, reach in with a17mm hex-head driver and loosen the axle bolt.The axle bolt is a torque-to-yield bolt and shouldbe very tight. Use a long-handled breaker bar; beprepared to apply significant force to loosen thebolt.Note: The axle bolt is a one-time-use fastener andmust be replaced.Step 3Remove the lug bolts.Remove the wheel.Page - 4Address: 1000 Seville Road, Wadsworth, OH 44281 Phone: 1.800.924.5172 Web: www.ecstuning.com
<strong>Audi</strong> <strong>Quattro</strong> <strong>Rear</strong> <strong>Wheel</strong> <strong>Bearing</strong> <strong>Service</strong> <strong>Kit</strong>Schwaben® ES2561175Step 4Remove the rotor set screw. If your old set screw iscorrosion-damaged, you may need an impact driverand Phillips bit to remove it.<strong>Quattro</strong> B6/A4 and B7/A4(ECS stocks replacement stainless steel screws.)Note the wheel stud at the 12 o’clock position.This handy tool screws into a bolt hole by hand.It supports the wheel to make wheel removal andinstallation much easier and safer.Step 5Reach around to the backside of the brake caliperand unbolt it from the bearing holder.There are two bolts with 8mm hex heads.(Note: If you want to remove the brake caliper androtor as an assembly, leave the hand brake applied,locking the caliper and rotor together.)Step 6Remove the brake rotor and caliper; hang them offto the side, out of your way.Caution: Support the brake assembly witha strong hanger. Do not use a weak hangerthat may slip, allowing the weight of the brakeassembly to hang from the brake hydraulichose. Doing so may stress the hose anddamage it, rendering it unsafe.Unbolt and remove the brake rotor metal shieldfrom the bearing holder.Address: 1000 Seville Road, Wadsworth, OH 44281 Phone: 1.800.924.5172 Web: www.ecstuning.com
<strong>Audi</strong> <strong>Quattro</strong> <strong>Rear</strong> <strong>Wheel</strong> <strong>Bearing</strong> <strong>Service</strong> <strong>Kit</strong>Schwaben® ES2561175Step 10Place a jack under the control arm and raise itslightly.Loosen and remove the fasteners connecting thecontrol arm to the bearing holder (knuckle). Usetwo 18mm wrenches.CAUTION: Do not lift the car off the jack or jackstands.<strong>Quattro</strong> B6/A4 and B7/A4Step 11Pry the bearing holder (knuckle) up and away fromthe control arm far enough that you can slide theouter CV joint out of the hub.See the next photo for an important caution.Step 12Careful! Remove the outer drive joint carefully. Donot damage the square windows in the tone ringcage (arrow). This is the reluctor that generates thesignal in the ABS (Anti-Lock Braking system) speedsensor.(FYI: The speed signal is used by the ABS andother onboard controllers. If it is bent or otherwisedamaged, it will illuminate the ABS dashboardwarning light, and disable Anti-Lock braking.)Page - 7Address: 1000 Seville Road, Wadsworth, OH 44281 Phone: 1.800.924.5172 Web: www.ecstuning.com
<strong>Audi</strong> <strong>Quattro</strong> <strong>Rear</strong> <strong>Wheel</strong> <strong>Bearing</strong> <strong>Service</strong> <strong>Kit</strong>Schwaben® ES2561175Step 16Slide the jack screw through the hole in the smallpress plate; then slide the assembly through thebearing hole.The bolt head should be inboard, with the threadedend facing outward, as shown.<strong>Quattro</strong> B6/A4 and B7/A4Step 17• Install the hollow bearing receiver cup onto thebearing holder. The cup should centered on theface of the bearing holder.• Lube the jack screw threads liberally with cleangrease.• Install the thrust washer and large jack screwnut.Step 18• Turn the nut with a 32mm open or box wrench.As you do, the inner press plate will draw thebearing out of the bearing holder (knuckle), intothe hollow receiver cup.• When the bearing is fully removed, back off thenut, and separate the parts of the press tool.• Remove the old bearing from the receiver cup.Page - 9Address: 1000 Seville Road, Wadsworth, OH 44281 Phone: 1.800.924.5172 Web: www.ecstuning.com
<strong>Audi</strong> <strong>Quattro</strong> <strong>Rear</strong> <strong>Wheel</strong> <strong>Bearing</strong> <strong>Service</strong> <strong>Kit</strong>Schwaben® ES2561175Step 19• Clean the bearing bore. Remove all rust anddirt. The bore should be shiny clean andfree from nicks or burrs. Polish away smallimperfections with emery paper or an abrasivecleaning disc (Roloc or similar).<strong>Quattro</strong> B6/A4 and B7/A4• Apply a thin film of grease to the bore.Note: The inner ledge in the bore (arrow) limitsbearing penetration when pressing in the newbearing.Step 20The wheel bearing assembly contains twobearings. One of the inner bearing races has alarger inside diameter.The larger diameter race must face outward wheninstalling the bearing assembly to accept thestepped neck on the drive hub.Step 21To install the new bearing, reverse the positionsof the two round press plates. This time, installthe larger plate inboard. Install the smaller plateoutboard, as shown.Slide the thrust washer over the screw jack.Thread the large nut onto the screw by hand until itcontacts the press plate. Then turn the nut with thewrench to draw the bearing into the bore.Page - 10Address: 1000 Seville Road, Wadsworth, OH 44281 Phone: 1.800.924.5172 Web: www.ecstuning.com
<strong>Audi</strong> <strong>Quattro</strong> <strong>Rear</strong> <strong>Wheel</strong> <strong>Bearing</strong> <strong>Service</strong> <strong>Kit</strong>Schwaben® ES2561175Quick Reference Guide<strong>Quattro</strong> B6/A4 and B7/A4Main Suspension ComponentsbrakerotorrotorshieldbearingholderDisassemble these componentsbefore installing and using thebearing press tool.drivehubwheelbearingaxle boltaxle assemblyPress off <strong>Wheel</strong> HubThe horseshoetool slidesbehind the hubto create threepress points.Thread thebolts into thehub and screwthem againstthe horseshoeplate to removethe hub fromthe bearing.thread large boltsin kit through hubthreaded holessmall machine screwspress plate and hubside viewPage - 12Address: 1000 Seville Road, Wadsworth, OH 44281 Phone: 1.800.924.5172 Web: www.ecstuning.com
<strong>Audi</strong> <strong>Quattro</strong> <strong>Rear</strong> <strong>Wheel</strong> <strong>Bearing</strong> <strong>Service</strong> <strong>Kit</strong>Schwaben® ES2561175Press In New <strong>Bearing</strong><strong>Quattro</strong> B6/A4 and B7/A43 clean and lube boreReverse the process to install the newbearing. Make sure the bearing and bore areclean and lubed with a film of clean grease.lightly greaseoutside of bearingcleanbore4 press inbearingAssemble the tool as shown. Turn thenut to draw the bearing into the boreuntil it bottoms (dotted line).Page - 14Address: 1000 Seville Road, Wadsworth, OH 44281 Phone: 1.800.924.5172 Web: www.ecstuning.com
<strong>Audi</strong> <strong>Quattro</strong> <strong>Rear</strong> <strong>Wheel</strong> <strong>Bearing</strong> <strong>Service</strong> <strong>Kit</strong>Schwaben® ES2561175Press in the Hub<strong>Quattro</strong> B6/A4 and B7/A4press plateReinstall the brake rotor sheet metalshield on the bearing holder. Align thehub with the bearing opening. Assemblethe press tool as shown.nutwasherpress platepress platenutwasherpress plateTurn the nut to pull the hub into thebearing bore, until the hub is pressedall the way down.Page - 15Address: 1000 Seville Road, Wadsworth, OH 44281 Phone: 1.800.924.5172 Web: www.ecstuning.com
<strong>Audi</strong> <strong>Quattro</strong> <strong>Rear</strong> <strong>Wheel</strong> <strong>Bearing</strong> <strong>Service</strong> <strong>Kit</strong>Schwaben® ES2561175Final Reassembly<strong>Quattro</strong> B6/A4 and B7/A41) Reinstall the axle. Slide the splined end of the axle stub into the drive hub. Bolt the innerconstant velocity joint to the drive axle hub. Replace and tighten all axle joint bolts.2) Reinstall the rotor shield.3) Install a new shoulder (axle) bolt and torque to specifications.4) Reinstall the brake rotor and caliper.5) Reinstall the wheel speed sensor6) Install the road wheel/tire and torque the wheel bolts to specifications.Thanks!Thank you for purchasing the ECSTuning <strong>Audi</strong> <strong>Quattro</strong> <strong>Rear</strong> <strong>Wheel</strong><strong>Bearing</strong> <strong>Service</strong> <strong>Kit</strong>.We appreciate your business, andhope this installation guide has beenhelpful.ES2561175Page - 16Address: 1000 Seville Road, Wadsworth, OH 44281 Phone: 1.800.924.5172 Web: www.ecstuning.com
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