(a) Outline the advantages and disadvantages of a planned maintenance scheme for an auxiliary diesel engine. (6)

(b) State the advantages of condition monitoring as a method of deciding when auxiliary engine component overhaul is necessary. (5)

(c) Suggest the means that are normally available (i.e. without the need for elaborate or expensive equipment) to check the condition of a diesel engine as a guide to ascertain the maintenance that is actually needed.