Every motorist at least once in his life got into a situation when his beloved car stopped showing signs of life. This can happen not only with an old car, but also with any foreign car - the starter can "not twist", it can idle the retractor relay. Because there are no absolutely reliable cars, sooner or later components and assemblies wear out and need to be checked, repaired or replaced.
It is necessary
power supply 12-16 V or 24-32 V, wires
Instructions
Step 1
Remove the car starter from the engine. To test the starter retractor relay, connect the “50” retractor pin to the positive battery terminal, and the starter housing to the negative terminal. In a serviceable starter traction relay, the armature will push the drive gear into the front cover window with a characteristic click. The solenoid relay simultaneously performs two important functions. With the help of the drive lever (starter fork) with an overrunning clutch, it engages the latter with the flywheel of the car engine, and also closes the contacts on the end part, thereby ensuring the passage of current through the circuit to the starter stator. Typical failures of the solenoid relay are burning of contacts, jamming of the armature due to corrosion or dirt, breakage or burnout of the winding.
Step 2
Install a 12.8 mm gasket between the gear and the stop ring and turn on the relay. Take the device and check the relay turn-on voltage. It should not exceed 9 V at an ambient temperature of 20 ± 5 ° C. If the voltage does not match, then this indicates a malfunction of either the relay or the drive. This test scheme is used for ST-221 starters manufactured before 1983, when a single-winding traction relay. For a starter with such a relay, you should also check the current consumption. It should not exceed 23 A.
