Forklift trucks are mainly divided into two categories: internal combustion forklifts and electric forklifts: nowadays, electric forklifts, regardless of brand, will have an electronic controller and instrument display device. When the forklift fails, first observe the LCD screen on the car, or the warning light, if there is any display or the light is flashing, then check the instructions of the car to see what the fault code is. . If the motor of the forklift truck can work, it can be explained that the battery is in the electric control box. The circuit before the insurance is good, the lifting part is not bad, because the two circuits are lifted and walked, and the two sets of independent working electricity are separated. control. Then the most prone to such failures are generally, the handbrake switch, stuck without a normal reset, the accelerator, that is, the throttle, is also stuck or burned out, does not return to the zero position, the electronic control can not detect the gear position Voltage, while protection is down. The forklift direction switch plug wire contact is not good, or the direction switch medium bit line contact is not good, then look at the motor's carbon brush is not worn too much, in the electric control box, each switch plug has no bad contact. If the problem cannot be solved, check the following forklift accessories one by one:
1. The starting switch electrical socket is loose and falling off. Repair method: repair or direct replacement
2. The fuse is blown. Maintenance method: direct replacement
3. The battery terminal is loose and the plug is damaged. Repair method: tighten or replace
4. The battery capacity is insufficient. Maintenance method: repair or recharge replacement, and also check if the charger can work normally
5. The operation is not correct, the front and rear gear levers are not in the neutral position or the micro switch is damaged. Maintenance method: the joystick is centered and the microswitch is replaced
6. The hydraulic oil tank is insufficient in oil and the lifting is not in place. Maintenance method: first add oil, then check where there is oil leakage and then repair and replace
7. The hydraulic oil filter screen is clogged. Repair method: cleaning or replacement
8. The driving motor has work, but the car does not go. Maintenance method: Disassemble and check the drive gear box to see which gears are broken and replace them with new ones. For half-axle cars, check the lower half shaft.
9, the drive motor has electricity, but the motor does not turn the car can not go. Maintenance method: Check whether the drive motor is burnt out, whether the carbon brush is worn, and then jack up the car to see if the car wheel has a card issue.
10. The drive motor has no electricity and the car does not respond. Maintenance method: first check from the power supply, to insurance, main contactor, controller, accelerator, reversing contactor, bypass contactor, regenerative contactor, current sensor, module, diode, module board, etc. Where is the burnt out, replace the new ones.
11, the forklift can not start, the display did not respond. Maintenance method: check the power supply, the key switch, whether the main contactor has electricity, and then check to see if the motherboard flash is normal, then go to the startup board, display. Check for burnout and replace with new ones.
12. Check if the hydraulic pressure is working properly. Maintenance method: If the hydraulic pressure is not working properly, check: module, module board, main board, hydraulic motor, hydraulic switch, hydraulic gear pump, etc., if there is burnt or worn replacement of new parts.
13. Check if the steering system is working properly. Maintenance method: If the steering work is not normal, the direction is turned to check the steering machine, the assist cylinder, and the steering motor. Can't turn to check steering main board, fuse, steering contactor, direction sensor, steering gear, steering motor, steering worm system, steering ball and pull rod for looseness and falling off, check for triple plate and bearing damage, knuckle and steering king pin , Needle roller bearings, flat bearings, etc. are damaged. If you have new parts to replace.
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