The problems that are most likely to happen to motor are listed below.
No. 1: Motor does not turn on.
First of all, find out where the motor problem is. Then you can fix the motor winch problems by replacing witch Assy, inserting switch Assy firmly to the connector, tightening nuts on cable connectors, taping solenoid to free contact, applying 12 volts to coil terminal directly, checking for voltage at armature port with switch pressed. If voltage is present, replace motor.
No. 2: Motor runs too hot.
Long period of operation and insufficient battery will lead to the motor uncomfortably hot. If it happens, let winch cool down periodically and check battery terminal voltage under load. If 10 volts or less, replace or parallel another battery to it.
No. 3: Motor runs slowly or without normal power
When the motor with abnormally insufficient power, please check if vehicle battery runs down, current or voltage is sufficient and the connection condition. Then what we can do is to recharge battery by running vehicle’s engine, clean, tighten or replace the connector, and check battery cable for corrosion.
No. 4: Motor runs but cable drum does not turn
That might because that clutch not engaged. You can fix it up by ensuring lever is completely in “Engaged” position.