Lifting eye bolts are typically mounted at the top centre or symmetrically on components for lifting purposes. They may also be arranged symmetrically on both sides. When designing, attention should be paid to ensuring that their safe working load is sufficient to lift the entire component.

The cover removal screw is a type of jacking screw designed for disassembly. Typically part of a set of screws, it is longer than the others. Once other screws are all loosened, tightening of this screw causes the component (such as a cover) to detach from its original position. Locating pins are positioned to ensure the alignment of the critical position. Lifting eyebolts are  typically placed to escape the area which a quarter of  fastening bolts stress  is more serious.Pin holes should not be made as through holes, and consideration must be given to whether there is a disassembly requirement.

Oil indicators shall be vertically positioned at a height no less than 10% to 15% of the oil tank's total height. Oil plugs are used for filling or draining oil, shall be located in areas where they have no significant impact on the structure.

The observation hole should be based on its specific purpose,The vent cap is arranged at the top of the oil tank, with a larger aperture than the inlet pipe, and the end part should be made in elbow shape to prevent sundries from falling in.