Commercial motor vehicle safety standards mandate thorough verification of mechanical and hydraulic steering assemblies prior to operation. Match each steering system component on the left with its corresponding critical pre-trip inspection criterion on the right.
- Steering gear boxCheck for missing or loose mounting bolts to the chassis frame and inspect the casing for power steering fluid seepage.
- Power steering pump beltInspect the drive band for 1/2 to 3/4 inch play at center span and ensure there are no deep cracks, splits, or frayed cords.
- Drag link and tie rod endsVerify castle nuts are secured with intact cotter pins and check that rods show no structural bends, cracks, or unauthorized weld repairs.
- Steering column shaftExamine universal joints and slip splines to verify they are properly fastened, lubricated, and free of excessive mechanical lash or binding.
Cevap
Steering gear box matches mounting security and fluid leak checks; Power steering pump belt matches deflection tension and belt wear checks; Drag link and tie rod ends match castle nut, cotter pin, and weld defect checks; Steering column shaft matches universal joint security and spline lash checks.
Each steering subsystem has distinct physical indicators during a safety walkaround: the gear box requires frame-fastener and leak inspection, the pump belt requires tension deflection and surface-wear evaluation, linkage ends require positive locking fastener and weld-free integrity checks, and the column shaft requires universal joint lash verification.
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Anahtar Kavram
CDL Pre-Trip Steering System Inspection Procedures and Out-of-Service Defect Recognition
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