In use, the cylinder block of the generator set is susceptible to overload operation or the failure of the cooling system and lubrication system, resulting in deformation, warping or damage. The flatness of the cylinder block can be checked in the following two ways.
Check with straightening gauge: Check with straightening gauge and feeler gauge on the upper plane of the cleaned cylinder block. The straightening gauge is placed on the upper plane of the cylinder block, and the flatness is obtained by measuring the joint gap with a feeler. During the inspection, the straightening gauge should be measured at six horizontal and horizontal crossing positions on the upper plane of the cylinder block to obtain accurate measurement values. Vertical: 0.076mm, horizontal: 0.051mm.
Check with straightening plate: carbon black or printing oil can be evenly coated on the clean cylinder surface, and then put the straightening plate on the top, observe the traces of carbon black or printing oil on the cylinder surface, and determine the warping part of the cylinder surface.
The repair method of the flatness of the cylinder block: the height from the center of the main bearing hole to the top surface must be ensured. When the warping part of the cylinder block is checked, the upper plane of the cylinder block should be repaired by grinding and milling.
1) In the repair process of the top surface of the cylinder block, the main bearing hole and the cylinder hole should be used as the processing positioning basis.
2) The top surface of each cylinder block is allowed to be repaired twice.
3) The upper right corner of the back end face of the cylinder block is used for marking the top surface after repair.
4) It must be ensured that the parallelism between the top surface and the center of the main bearing hole is less than 0.05mm per 508mm length.
5) The top surface roughness should be less than 3.2um.
6) Check the flatness of the top surface, which is required to be within the following range:
7) After the top surface is repaired, the assembly must use a thicker cylinder gasket to ensure the correct piston to valve clearance.
For more questions about the generator set, please call the Beidou Power team. More than ten years of professional production and sales of power generation equipment experience, more professional engineer team to serve you, choose Beidou power is to choose rest assured, welcome on-site factory inspection.
Post time: Mar-21-2025