Question

select the best description for the operation of the one - shot self - adjuster.
a) makes one - shot adjustment each time it is activated during normal service.
b) makes one adjustment on the star wheel each time the brakes are applied.
c) make one adjustment each time the brakes are applied when the vehicle is traveling in
d) makes one adjustment and then it becomes a fixed strut between the brake shoes.

Explanation:

The one - shot self - adjuster is designed to make a single adjustment each time it is activated during normal service. Option B is incorrect as it mentions the star wheel (which is more relevant to other types of adjusters like manual adjusters in some drum brake systems). Option C is wrong because it is not related to vehicle travel direction in the context of a one - shot self - adjuster's basic operation description. Option D is incorrect as it does not become a fixed strut after one adjustment.

Answer:

A. Makes one - shot adjustment each time it is activated during normal service.