1.Ready to place the pump part of worktable (ground) and disassembly tool, do not leave around any indiscriminate use, so as not to damage the pump parts.
2.And confirmed before the motor is in maintenance state; unscrew the gas plug, with Straw put the oil seal seat cavity aspiration.
3.Demolition of the fractional coupling: the first coupling of the fixed six angle screw down, and then gently pull the shaft coupling half from the shaft slowly down (note not to fall off). Use plum blossom wrench shaft fasten bolt and block the impeller to the pump body slowly sink, remove the other half of the coupling, pump shaft with ring.
4.Demolition sealed block: block compress sealed screw nut and gently remove seal seat (Note: do not destroy the seat of rubber oil seal) and cleaning.
5.Removing and cleaning bearing: first gently loosen bearing seat after the demolition of the top bearing bolts, and put up along the shaft and unloaded; with jet fuel cleaning bearings and a pre loaded and dry coated with a little 20 mechanical oil lubrication protection.
6.Removal of mechanical seals: to seize the seal spring along the pump shaft to lift, you can remove.
7.Mechanical seal assembly: in the dynamic and static ring surface coated with a layer of clean 20 lubricating oil; add lubricant bearing guided, first gently positioning ring static load bearing guide; then on the pump shaft with lubricating oil, the mechanical seal ring part gently into the pump shaft. Push should be retractable sealing ring gently (note that dynamic and static ring part rotation preventing part assembly in place).
8. assembly seal seat: seal seat first into the rubber oil seal, and then put the seal seat into the pump cover and press on the bearing seat, tighten the nut.
9. First, the coupling ring on the motor shaft mounted on the head, with half of the coupling, then the pump shaft end and coupling slot is arranged on the block and plum wrench tightening bolts (lifting shaft 3~5 mm and pre-stressed mechanical seal); the other half of the coupling screw six screws must be tightened and then loaded on the corner. Installation of coupling the correct inspection requirements: the fraction of the gap between the joint clearance is uniform; the number of dynamic coupling with the hand disc to check the rotation flexible.
10. According to the use of key points test operation to replace the mechanical seal is correct, whether the normal operation of the pump group.
