The function of the aluminum casting gear chamber for diesel square engines is to seal the gear chamber and prevent the oil leakage of the internal timing transmission system. The gear chamber cover is a shell component installed on the engine gear chamber, used to seal the gear chamber and prevent the oil leakage of the internal timing transmission system. The gear box cover is an aluminum component. The weight of aluminum is lighter than that of traditional cast iron parts, making the installation work much easier. By setting a series of shaped reinforcing ribs on the back of the gear compartment cover, the overall strength can be enhanced to ensure that the gear compartment cover can withstand the load generated during the operation of the engine. By designing a series of first and second avoidance pits inside the gear housing cover, they can be used to match the shape of the timing transmission gears, making rational use of the space and thereby enhancing the practicability…