CEJN Work Safely Onboard Ships - Manual (Page 5)

THE HEAVY TASK OF ENGINE REPAIR. Dismantling an engine in order to repair it is an extremely complex task.
Bolt tensioning is used to release the bolts on the cylinder head, on the crankshaft at the bottom of the engine
and in other places. Sometimes a single bolt tool is used and sometimes a rig with a porting block assembly for
simultaneous depressurisation.
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