Auto mechanics Paper 2 May/June 2015

Question 5

The sketch below is a leaf spring unit.

(a) Identify the parts labeled J, K, L, M and N.

(b) State the purpose of the following:

(i)         swinging shackles;
(i)         centre bolt.

             (c) State three advantages of an independent suspension over the rigid type.


Most of the candidates who attempted this question faired well in part (c) of the question.  However parts (a) and (b) were not properly responded to by the candidates.  The required responses to parts (a) and (b) are;

  • J  is Master leaf, main leaf or top leaf;
  • K  is U – bolt;
    L  is Spring eye or eye;
    M  is Axle;
    N  is spring clip or clip.


  • (i)         Swinging shackle allows a variation in the spring length
  • (ii)         Centre bolt is used to fasten the leaves together.