Forklift gear pump repair of major parts

(1) Cylindrical gear wear and glue, so that the radial gap increases, the light of the use of no significant effect, better than repair; serious should be replaced gear. Face gear wear on both sides, the light from the line, the grinding can be used to grind off the burr marks; serious wear, grind on the grinder. However, as long as one gear wear, the other gear also need to grind to ensure that the thickness difference between the two gears within 0.005mm. Grinding should also pay attention to face and hole, face and face the higher accuracy. After grinding the oil stone to sharp edge burr, but not chamfering. Oil pump gear are one-way work, so the tooth surface are single-sided wear. Can be worn gear tooth stone removed with burrs, gear meshing orientation, can restore the performance of the pump. (2) When the end surface of the bearing frame is worn or the thread is peeled, the four bearing frames may be ground on the surface grinder with the non-gear contact surface as a reference, and the end surface is polished out once. The bore is generally less wear and tear, if the wear is serious, available grinding or grinding aperture to repair size, matching needle. Damaged surfaces can be polished when worn, scratched, and grooved with bosses or axially floating bushings. The method is to put No400-600 on the smooth surface of the abrasive paste, plus wash oil or wax on the surface of the side plate gently rotating, polishing. (3) pump body wear generally occurs in the suction chamber, some of the pump structure from the transposition method can be used to repair, about the pump body around its axis 180 °, the oil into the pressure chamber cavity to restore its ability to work. Can not be replaced with transposition method of the pump body, copper sleeve method can be used to repair. When the gear due to wear and tear after the end face, in order to maintain the axial clearance, the rear end of the pump body must be ground to the appropriate thickness.