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Which fastener secures a track rod end to the steering arm?

  • A.A circlip within the groove of the taper, which retains the joint once the taper has been drawn fully home
  • B.A castellated nut with a split pin or a self locking nut
  • C.A plain nut with a spring washer, which is tightened to the specified torque and requires no further locking
  • D.A pinch bolt

Answer: B

The taper is drawn home by the nut, which is then locked by a split pin or is of the self locking type. A plain nut would loosen and the joint would separate. Separation of a steering joint is a catastrophic failure. Reading the definition literally, rather than recalling a summary, avoids the usual confusion. Tracing the requirement back to the physical constraint that produces it makes the answer follow. Working the distinction through on a single concrete case fixes it more firmly than any rule of thumb.

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