1 Clean the outside of the starter, disassemble the forklift starter, take out the armature, and check the insulation of the pole coil for short circuit or open circuit with the test lamp. If there is a short circuit, the magnetic pole coil should be re-wound. If there is an open circuit or poor insulation, find the fault and carry out welding or insulation treatment. 2毫米。 The inspection of the casing, not allowed to have a crack, the two ends of the surface should be smooth and parallel and the error should be no more than 0. 05mm, the coaxiality between the cylindrical surface of the casing and the cylindrical surface of the magnetic pole should be no greater than 0. l mm. 5毫米。 The gap between the magnetic pole and the magnetic pole, and the gap between the armature and the magnetic pole is 0.25~0. 5mm. 3 Check both ends of the forklift and the intermediate bearing cover bushing. If the bushing is severely worn, the bushing should be replaced. The bushing and the end cap bushing hole should have an interference of 0.08~0.18mm. That is called the forklift network, don't copy the articles of Sylvia. The inner diameter of the bushing should be reamed according to the armature journal and ensure a clearance of 0.03~0. llmm (intermediate bearing clearance is 0.075~0. 140mm). l The full-circle jump of the cylinder facing the inner hole of the bearing at the end of the forklift shall not be greater than 0.12 mm, and the circular runout of the two ends shall not be greater than 0.1 mm. 5 Check the insulation of the brush holder with a 220V test light.
Inspection and repair of the forklift armature. 1 Check the armature shaft. If the armature journal is worn out and exceeds the allowable limit, it can be repaired by electric plating. 05毫米。 The armature shaft is bent, the circle beating on the surface of the core shall not be greater than 0. 15mm, the circular runout of the intermediate journal shall not be greater than 0. 05 mm. 2 The roundness and cylindricity error of the commutator should be processed if it is larger than '0. 05mm or the surface has nicks and groove marks, but after turning, the thickness of the copper piece should not be less than 2mm, otherwise it should be Li climb. 3 Check the insulation and short circuit of the armature coil with the test lamp. When the armature coil is poorly insulated or short-circuited, it should be repaired as much as possible. If it cannot be repaired partially, the coil should be removed to replace the insulation.