The starter turns slowly and cannot start the engine. Possible reasons are:
1. Battery voltage is too low. 2. The voltage drop on the line is too great. 3 The starter is defective. 4 The motor running resistance is too great.
Check the battery first and use the discharge difference to check the battery discharge voltage. The voltage is not less than 11 volts. The density of the electrolyte in the single cell. of the battery should also be measured. The density of the electrolyte in each cell is not less than 11 volts below 1.27. If the battery voltage is too low or the density is too low, the generator voltage should be measured. The voltage of a 12-volt car should be between 13.5 and 14.5 volts, and the voltage of a 24-volt car should be between 27 and 29 volts. If it is too low, the generatorr and associated lines should be checked.
Check the starter line for voltage drop. If it is too high, measure the voltage at the live terminal of the starter when starting. It should not be less than 9 volts for 12 volt vehicles and not less than. 18 volts for 24 volt vehicles. If it is too low, the line voltage drop is too great. At this point, check 1. Check if the live wire connectors are in good contact. Touch them with your hands to see if there are any. hot areas can cause poor contact. 2. Check if the live wire is aged. Some lower quality live wires are made of aluminum wire or even iron wire. If not, replace it. 3. Check if the ground wire is in good contact. Note that not only should the ground wire running from the battery to the large chassis be checked during inspection, but also the ground wirel of earth going from the engine to the large chassis. The inspection method is the same as above.
Check if the starter is clean, stator and rotor coils are open circuit, short circuit, etc.
Check if the motor resistance is too high , for example when the cylinder seal is worn, the plant is blocked. If water enters the cylinder, the water in the cylinder will hinder the movement of the piston and the starter will not be able to drive the engine. For example, there may be issues such as tree. outfit, flower tiles, burning piston, etc. Although these have nothing to do with electrical appliances, as an electrician you should also think that they have also encountered them in actual work.
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