Large marine diesel engine air cooler shell assembly process

The invention discloses an assembly process for an air cooler shell of a large marine diesel engine, solves the problem of unreasonable process in the prior art, and has the beneficial effects of ensuring reasonable installation of each component and reducing the probability of occurrence of problems such as repair. Comprising the steps that an air cooler frame is assembled, the assembling allowance is reserved in the assembling process, the air cooler frame is in an L shape, and the long side of the air cooler frame is located at the bottom; air cooler side plates are assembled, and the air cooler side plates are fixed to the two sides of the air cooler frame respectively with the air cooler frame as the benchmark; by taking the air cooler side plate as a reference, a bending part is fixed, and the bending part is located on the inner side of the air cooler side plate and located at the inner corner of the air cooler frame; a steam-water separator frame is installed and fixed between the air cooler side plat