II. LUBRICATIONC.Kingpin BearingsKingpin bearings should be lubricated at eachchassis lubrication (approximately 1,000 mile intervals).To ensure thorough lubrication, the front axle should beraised slightly to relieve weight. The lower kingpin lubefitting is located in the lower kingpin bearing plate and isaccessible in the top surface of the lower arm of thesuspension yoke (See fig. 3). The upper kingpin fittingis either on the front or rear of the upper kingpin bracket(See fig. 3).D.Differential CarrierDifferential carrier should have the lubricantchanged at the same intervals as the rear axle on thevehicle or at 10,000 mile intervals. Drain while lubricantis warm. Clean the magnetic drain plug when it isremoved. Remove the fill plug to ensure quickerdrainage. Allow housing to drain completely. Install thedrain plug and fill the housing with the appropriate gearoil to the bottom of the fill plug hole. Check for leaks.SAE 140 gear oil (meeting Mil-L-2105B) is appropriatefor most operating conditions. Follow the vehiclemanufacturers recommendations for the rear axle andapply them to the front axle under other conditions.E.Steering Tie Rod Ball JointsSteering tie rod ball joints should be lubricatedevery 1,000 miles with chassis lubricant (See fig. 3).Check the steering system at each lubrication. Inspectfor loose, bent or otherwise damaged components.Careful attention to such details is a vital safety factor.-4-
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