(a) Explain why top bracing is used for large crosshead engines. (4)
(b) Describe, with the aid of a sketch, a hydraulic top bracing unit for a large crosshead engine indicating where the top bracing is fitted and how it operates. (6)
(c) Write instructions for the checking of a large crosshead engine hydraulic top bracing system and a holding down system. (6)
UKM Tuticorin 
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