STEERING COLUMN ASSEMBLY S-SERIESDESCRIPTIONThe steering column assemblies used on S-SeriesRegular Cab and Flat Back Cowl (FBC) and Bus chassisare constructed with a few minor differences; however,the overall design and function are similar.The steering wheel, containing the horn switchmechanism, is connected to the upper steering columnshaft. On conventional cab models, the upper steeringcolumn shaft passes through the steering columnhousing assembly and connects with the lower steeringcolumn shaft at a double-yoke assembly with the aid of aspider type universal joint. The steering column housingis fastened to the dash panel via two support bracketassemblies, of which the bracket closest to the steeringcolumn incorporates the tilt-column mechanism onmodels equipped with an adjustable steering column.On all S-Series chassis, the lower steering column shaftis joined to the steering gear by either another doubleyoke U-joint and end yoke pinch bolt assembly or a shellcoupling assembly.MAINTENANCESTEERING COLUMN SHAFT BOLTSThe steering column end yoke pinch bolt assembly, orthe column shaft mounting and shell coupling clamp nutsshould be checked for tightness annually or every 80 000kilometers (50,000 miles), whichever comes first. Allbolts and nuts should be tightened to torquerecommended in SPECIFICATIONS. Do notovertighten.Bolts affected are:Item 22, Figures 2REMOVAL AND INSTALLATIONSTEERING WHEELProcedures for steering wheel removal and installationare common to all S-Series models.Removal1.Position front wheels in a straight ahead position.2.Remove negative battery terminal.3.Pry up horn button cap evenly, disconnect hornwire, and remove the horn button.4.Remove the retainer ring.5.Remove the slip ring retainer screws.6.Remove the steering wheel mounting nut.7.Remove steering wheel using steering wheelpuller SE-1821 (Figure 1).Figure 1 - Removing Steering WheelCTS-4150Y - Page 2
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