Tire changer machine Fault and troubleshooting methods
Fault phenomenon | Cause | Elimination method |
The turntable spins in one direction | Universal steering switch damaged | Universal steering switch |
The wheel doesn't spin | Triangle belt damage Universal steering switch damaged Motor fault | Change triangle belt Replace the universal steering switch Change the motor |
Turntable jam | Triangle belt loosening | Adjust the tension of triangle belt |
Clamp open/Slow closing | Silencer fault | Clean or replace |
The wheel does not lock the rim properly | Fixture damage The rotary cylinder is damaged | Change fixture Replace the cylinder seal ring |
During the process of removing and assembling the tire, the disassembling head touches the rim | Plate position is incorrect or damaged The screw of the turntable clamp is loose | 1、Adjust or replace the locking plate 2、Tighten the screw |
The pedal cannot be positioned in the working position | Reset spring failure | Spring replacement |
The tire press device is difficult to operate | 1、Silencer fault 2、Tire press device cylinder seal ring is damaged | 1、Clean or replace the silencer 2、Reseal |
Tire balancer machine fault handling
| Fault | Cause | Elimination method |
When the balancing machine starts, the screen is not displayed, and the main switch is not bright | Socket doesn't work | Check the power supply circuit Check the plugs and sockets |
The diameter read by the ruler does not conform to the standard value | 1、The ruler was placed incorrectly during a read operation 2、The ruler is not calibrated | As described in Figure 11 and "Wheel Data Entry", place the ruler in the correct position. Calibrate the ruler |
The automatic ruler does not function | When the power switch is turned on, the ruler cannot be reset, but the data can be entered through the key, and the ruler control ability is invalid | Turn off the machine, reset the ruler completely, and restart the machine |
The wheel should not rotate during starting operation | The shield cable falls off or the shield does not fall | Secure the shield connector and lower the shield |
The unbalanced value displayed by the balancing machine is unstable | 1、The machine vibrates as it spins 2、The machine is not securely placed 3、The wheel is not clamped 4、Incorrect data entry 5、Machine uncalibrated | 1、Reoperation 2、Avoid vibrating the machine while reading values 3、Hold the machine steady and tighten the wheels properly 4、Enter the correct value 5、Calibrate |
Failure of column lift and elimination method
Fault phenomenon | Cause | Elimination method |
| The motor does not rotate while rising | The fuse is disconnected The push-button switch circuit is disconnected The AC contactor coil is disconnected | Check whether F1-F4 is fusible Check the button switch circuit Check the AC contactor line |
| The motor is rattling but won't turn | Three-phase power supply lacks phase | Stop operation immediately, check whether the main circuit of the motor is broken (phase) |
| The motor turns the machine without rising | 1、Motor rotation is incorrect 2、Low hydraulic oil 3、Due to transportation and other reasons, the pump is filled with air, resulting in gas blocking 4、The relief valve is faulty Manual unloading valve spool with stolen goods stuck 5、The oil outlet seal of the oil pump is broken 6、Motor running heavy, and jitter, oil filter 7、The outer net of the oil filter is clogged seriously | 1、Phase change of motor 2、Refill hydraulic oil 3、Remove check valve point and move lift key (Pay attention to oil injection) See the oil flowing out of the hole, and then reinstall the check valve (tighten). 4、Check the spool seal and seal of the relief valve, clean the valve or replace the damaged seal ring 5、Check the unloading valve and clean the spool 6、Gear pump can be removed, check and replace the seal ring 7、Clean the oil filter |
The ascent rate is too slow | The outlet seal of the oil pump is broken and leaking oil | Same as above |
| Jitter at work | There's air in the hydraulic circuit The upper connector of oil pump suction pipe is leaking The oil filter is blocked | Run the exhaust up and down and repeatedly. Check the seal of the oil pump suction pipe connection Clean the oil filter |
| The lift can go up but cannot go down | The safety key failed to disengage the tooth block Out of sync | Pull the cable to free the safety key from the tooth block adjust |
| There are signs of crawling | There is air in cylinder Poor lubrication The slider is badly worn | Press 6.2.9 to exhaust Grease Replacement slide |
Failure of scissor lift and its elimination method
Fault phenomenon | Cause | Elimination method |
The motor does not rotate while risin | 1、The push-button switch circuit is disconnected 2、The AC contactor coil is disconnected 3、The limit switch is not closed | Check the button switch circuit Check the AC contactor line If the limit switch terminals No. 2 and No. 4 are short-circuited with wires, the fault disappears. Check the limit switch, wire and adjust or replace the limit switch |
The motor is rattling but won't turn | Three-phase power supply lacks phase | Stop operation immediately, check whether the main circuit of the motor is broken (phase) |
The motor turns the machine without risin | 1、Motor rotation is incorrect 2、Low hydraulic oil 3、Due to transportation and other reasons, the pump is filled with air, resulting in gas blocking 4、The relief valve is faulty 5、The solenoid unloading valve spool is stuck with stolen goods 6、The outlet seal of the oil pump is broken and leaking oil 7、The motor runs heavily and wobbly, and the outer net of the oil filter is clogged seriously 8、The host (sub-machine) solenoid valve is not opened 9、The manual knob of the electromagnetic unloading valve is not closed | 1、Change the phase of the motor 2、Refill hydraulic oil 3、Remove the lift button of the relief valve (pay attention to the oil injection) to see the oil flowing out of the hole, and then reinstall the relief valve (tighten). 4、Check the spool seal and seal of the relief valve, clean the valve or replace the damaged seal ring 5、Check the electromagnetic unloading valve and clean the spool. 6、Remove the four screws connected to the pump station and the box and pull the motor upward for about 30mm. With the wooden strip support, press the rise button, observe whether the connection is leaking oil, such as leaking oil seal damage, you can remove the gear pump, check to replace the seal ring 7、Clean the oil filter 8、Check or replace the solenoid valve 9、Tighten the manual knob of the electromagnetic unloading valve |
The rate of ascent is too slo | Oil pump outlet seal is damaged leaking oil | Same as above |
The lift shakes when workin | 1、There's air in the hydraulic circuit 2、The upper connector of oil pump suction pipe is leaking 3、The oil filter is blocked | Operate according to the instructions and exhaust repeatedly. Check the seal of the oil pump suction pipe connection Clean the oil filter |
The lift can go up but cannot go down | 1、The electromagnetic unloading valve is not powered 2、The electromagnetic unloading valve is damaged and does not work 3、Push-button switch internal contact is poor 4、Main platform (sub-machine) solenoid valve is not opened 5、The air pressure is too low to lift the clasp | 1、Check whether there is a disconnect between the drop button and the electromagnetic unloading valve 2、Check and repair the unloading valve 3、Check push button switch 4、Check or replace the solenoid valve 5、Adjust the compressor air pressure |
Failure of alignment scissor lift and its elimination method
| Fault | Possible cause | Elimination method |
| The lift doesn't work | 1、The main power switch is not turned on 2、No electricity 3、Wire break 4、Safety break | 1、Turn on the main power switch 2、Check and repair 3、Change 4、Change |
| Cannot rise when the rise button is pressed (indicator light) | 1、Motor missteering 2、The pumping station is short of oil 3、Rise button fault 4、The maximum limit switch is faulty 5、The main discharge solenoid valve is not closed 6、Oil filter dirty | 1、Power main switch two-phase position switching 2、Refuel 3、Check button connection and replace if needed 4、Check the connection of the limit switch and replace it if necessary 5、Clean the valve and replace it if broken 6、Clean filter |
| Do not descend when the drop button is pressed (indicator light is on) | 1、The motor is not working and the mechanical lock cannot be opened 2、Main platform only goes up but not down: --Air valve failure --Air cannot reach the circuit --Circuit board fault 3、Total discharge solenoid valve does not work 4、Platform control solenoid valve is not open 5、Drop button fault 6、The machine may lock up | 1、Check motor 2、Air valve replacement 3、Check the compressor and air pipe 4、Board replacement 5、Check whether power is on and whether the electromagnet is damaged 6、Check whether power is on and whether the electromagnet is damaged 7、Check button connection and replace if needed 8、Press the up button first to unlock the machine |
| The lift cannot be stopped at a safe height (450mm) | The limit switch is incorrectly adjusted or damaged | Check the installation and adjustment or replace the limit switch |
| Unsteady lift descent (tremors or crawls) | There's gas in the cylinders and circuits | Loop exhaust (see previous section) |
| The lift cannot rise synchronously | 1、Gas or leakage in hydraulic circuit 2、The leveling ball valve is faulty 3、Hydraulic cylinder seal is damaged | 1、Exhaust, check the leak and replace the seal 2、Replace ball valve 3、Check and replace |
Lack of lifting capacity | 1、The pumping station is short of oil 2、Pump damage 3、The maximum pressure control valve is not properly adjusted | 1、Refuel 2、Check and replace 3、Adjust correctly and in place |