SWS - Stemco Quick Reference 2011 - CARQUEST Auto Parts

Wheel Bearing AdjustmentWHEEL BEARING ADJUSTMENTTMC’s RecommendedWheel Bearing Adjustment Procedurefor Standard Spindle NutsProper wheel bearing adjustment is critical to the performance of wheel seals and other related wheelend products. For that reason, we are proud to be a part of TMC’s Wheel End Task Force.We are happy to bring these standards to you in the form of this technical guide.Working together, in this way, STEMCO helps keep your rigs rolling.The following seven step bearing adjustment recommendation for standard spindle nuts was developedby TMC’s Wheel End Task Force.It represents the combined input of manufacturers of wheel end components.For Technical Support, call: 1-800-527-8492.STEP 1.Bearing Lubrication:Lubricate the wheelbearing with cleanlubricant of thesame type used inthe axle sump orhub assembly.STEP 5.Final Back Off:STEP 2.Initial AdjustingNut Torque:Tighten the adjustingnut to a torque of200 ft-lbs. whilerotating the wheel.AXLE THREADS FINALTYPE PER INCH BACK-OFFSteer(Single Nut)Steer(Double Nut)DriveTrailer12 1/6 Turn*18 1/4 Turn*14 1/2 Turn18 1/2 Turn12 1/4 Turn16 1/4 Turn12 1/4 Turn16 1/4 Turn*Install cotter pin to lock axle nut in position.STEP 3.Initial Back-Off:Back the adjustingnut off one full turn.STEP 6.Jam Nut Torque:STEP 4.Re-Torque Adjustment:Re-Torque adjustingnut to 50 ft-lbs whilerotating the wheel.AXLE NUT TORQUETYPE SIZE SPECIFICATIONSSteer(Double Nut)DriveTrailerLess Than2 5 /8”2 5 /8”And OverDowel TypeWasherTang TypeWasherLess Than2 5 /8”2 5 /8”And Over200-300 ft-lbs300-400 ft-lbs300-400 ft-lbs200-275 ft-lbs200-300 ft-lbs300-400 ft-lbsSTEP 7.Acceptable End Play:Refer to Page 21 of the STEMCO TQM Catalog for measuring end play.56 Order Entry 1-800-527-8492 Fax 1-800-874-4297 2011