Common faults and repair methods of electric wrenches

Electric wrenches may encounter various faults during use. Understanding the causes of these faults and their repair methods can help users better maintain the equipment and extend its service life. The following are some common faults of electric wrenches and corresponding repair methods:

Common faults and cause analysis:

1. Electric wrench does not start:

Power problem: insufficient battery power or poor contact of the power cord.

Switch failure: The switch is damaged or the contact is poor.

Motor failure: The motor is damaged or stuck internally.

2. Insufficient power of the electric wrench:

Insufficient battery power: Low battery power leads to insufficient output power.

Brush wear: Severe brush wear and poor contact.

Gearbox failure: Gear wear or insufficient lubrication leads to poor torque transmission.

3. Severe heating of the electric wrench:

Continuous long-term use: The equipment is overloaded or used continuously for too long.

Poor heat dissipation: The vents are blocked or the heat dissipation system fails.

Motor failure: The motor is damaged internally or the coil is short-circuited.

4. Abnormal sound of the electric wrench:

Gear wear: Gear wear or lack of lubrication in the gearbox.

Motor failure: the bearing inside the motor is damaged or the rotor collides with the stator.

5. Abnormal vibration of the electric wrench:

Gearbox problem: the gears inside the gearbox are damaged or improperly installed.

Motor bearing problem: the motor bearing is damaged or loose.

Repair method:

1. The electric wrench does not start:

Check the power supply: make sure the battery is fully charged, check the contact between the power cord and the plug, and replace the battery or power cord if necessary.

Check the switch: use a multimeter to test the on-off state of the switch, and replace the switch if necessary.

Check the motor: disassemble the equipment, check whether the motor is stuck or damaged, and clean or replace the motor if necessary.

2. The electric wrench is insufficient in power:

Replace the battery: make sure to use a fully charged battery, and replace it in time if the battery is aging.

Check the brush: disassemble the equipment, check whether the brush is worn, and replace the brush if necessary.

Lubricate the gearbox: open the gearbox, check the wear of the gears, add an appropriate amount of lubricating oil or replace the worn gears.

3. The electric wrench is heating up seriously:

Intermittent use: avoid long-term continuous use, and take appropriate intermittent breaks.

Clean the vents: ensure that the vents are unobstructed and clear the blockages.

Check the motor: disassemble the equipment, check whether the motor is damaged or the coil is short-circuited, and replace the motor if necessary.

4. The electric wrench makes abnormal noises:

Check the gearbox: open the gearbox, check the gear wear, add lubricating oil or replace worn gears.

Check the motor: disassemble the equipment, check the motor bearings and rotor, and replace damaged bearings or motors if necessary.

5. The electric wrench vibrates abnormally:

Check the gearbox: check whether the gears are installed correctly, adjust or replace the gears.

Check the motor bearings: disassemble the equipment, check whether the motor bearings are damaged or loose, and replace the bearings if necessary.

The above methods can solve common faults of electric wrenches and ensure their normal operation. If the problem is more complicated or the cause is uncertain, it is recommended to seek professional repair services.