Preparation before disassembling
1Clean the surface of pump, and check if the surface has chip and rust.
2 Check model and factory releasing number on nameplate, if there is no nameplate on pump, check
factory releasing number at seam allowance of front cover.
3Fill in relative information on main pump returned for maintenance card before disassembling, such as
manufacturer, applicable machine model, applicable working condition, pump model, factory releasing
number, factory releasing date, head and marks of fabricator, working parameters (pressure, rotation, impact
and the constant running time at the highest pressure) on main machine, total working time of main pump
and reason for returning for maintenance, etc.
4Make sure the production is released from the factory as a whole and it is not disassembled after
releasing, otherwise it is not maintained.
5. If there is external leaking, do gas tightness checking to the entire pump and find out leaking position.
6Check tightening torque of bolts (screw down bolts again with torque wrench, record the Max. tightening
torque), learn if tightening torque of all bolts have reached the required specification.
Disassembly and assembly steps
Disassembly steps
1. Loosen and remove the assembling bolts and
washers from the pump
SPC000012 Main Pump
Page 6
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