In the arc gear pump before demolition should be fully prepared, familiar with the equipment structure, process, running status; Disassembly should be careful to avoid damage to equipment components. 1. Disassembly of arc gear pump Before the arc gear pump disassembly should be fully prepared, familiar with the equipment structure, process flow, operating conditions; Disassembly should be careful to avoid damage to equipment components. 2 circular gear pump inspection Remove the parts for detailed examination, the gear for color inspection, does not allow cracks; journal conic qualified, the surface shall not be scratched, the maximum allowable roughness Ra 1.6μm; End caps, brackets, pump body shall not have obvious defects. 3. Review the data on the arc gear pump parts with the gap, should be fully checked. 4. Arc gear pump repair or replacement of excessive parts should be replaced, for repair of parts, repair should meet the standards. 5. Arc gear pump assembly and adjustment Gear end face and end caps, bracket axial clearance, by changing the end caps, brackets and the thickness of the gasket between the body to adjust; when the end cap bolts fastening , Symmetrical force evenly, while the edge of the disc drive rotor, rotor encountered immobile, heavy bolts should be loose; filler or oil seal, the compaction of the lid still need to squeeze the edge of tight rotor, not tight Too dead. 6. Test hydrostatic pressure test for 1.5 times the working pressure, keep 5min does not leak, run the test, no leakage, the normal operation of the sound, no abnormal vibration, the outlet pressure to meet the requirements of qualified.