The secondary maintenance of the electric pallet truck
runs for 1,000 hours or half a year for a secondary maintenance. 1. Repeat according to the first-level maintenance range. 2. Check the differential gears, half shafts, etc., adjust the gear meshing gap, and replenish the gear oil. If the gears are found to be damaged and excessively worn, they should be replaced. 3. Clean the inside of the motor, measure the insulation, repair the commutator and brushes, clean the motor bearings, and replace the grease. 4. Disassemble and repair the steering gear, adjust the free stroke of the steering wheel not to exceed 20°, and the limit is 36°. 5. Decompose and repair the brake system, adjust the free stroke of the brake pedal to 30-40 mm, and repair the brake shoe. 6. Overhaul the controller, contactor, polish the tip, adjust the contact position and spring pressure. 7. Refurbish the entire battery and check the discharge capacity. 8. Refurbish the battery rack and paint it with anti-acid paint. 9. Test run. (1) After the secondary maintenance, the maintenance worker shall be responsible for the quality of the vehicle. First, check whether there are missing gaskets and adjustment parts. After confirming that the adjustment is correct, test drive. (2) During the test run, it should include two parts: no-load and full-load operation. After running for a few kilometers, check whether there is any abnormality. If there is no abnormality, it can be handed over for trial. (3) The probation period is 5 days after it is put into production. If there is no abnormal situation during the probation period, it can be considered as qualified. If there is an abnormal situation, the responsible maintenance department has the responsibility to make adjustments again.
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