Technical characteristics of the battery Battery Specification Battery Type 6ST-55 Rated voltage, V 12 Rated capacity at 20-hour discharge mode and electrolyte temperature of 25°C at the beginning of the discharge, Ah 55...
Bringing a dry-charged battery into working condition Vehicles leaving the factory are equipped with rechargeable batteries filled with electrolyte and charged. Batteries can be delivered to spare parts without electrolyte,...
Checking the electrolyte level The electrolyte level should be 5–10 mm above the upper edge of the separators and not rise above the lower edge of the filler neck. During operation of the battery, the...
Checking the degree of discharge of the battery If the battery fails in operation, as well as during its maintenance, it is necessary to check the discharge of the battery with a rechargeable hydrometer. At the same time, it is...
Charging the battery 1. Carefully clean the battery removed from the car, especially its upper part, check the electrolyte level and, if necessary, bring it to normal. 2. The battery is charged with a...
Possible battery problems Cause Elimination Method Battery discharge while driving Alternator drive belt slip Adjust belt tension Excessive contamination of the battery surface Clean the surface of the...
Technical characteristics of the generator Generator G-221 1 - cover from the side of slip rings; 2 - rectifier block; 3 - bolt for fastening the rectifier unit and stator winding leads; 4, 5 - contact rings; 6 - rear ball...
Generator checks «Minus» battery must always be connected to ground, and «plus» - connect to clamp «30» generator. An erroneous reverse connection of the battery will immediately cause increased...
Checking the generator on the car If, when the engine is running, the battery charge indicator lamp is on, and the tension of the alternator drive belt is normal, then it is possible to roughly determine the...
Checking the generator on the stand Wiring diagram of the generator on the test stand 1 - voltmeter; 2 - switch; 3 - ammeter; 4 - storage battery; 5 - rheostat; 6 - generator Testing on the bench allows you to...
Checking the generator with an electronic oscilloscope Generator rectified voltage waveform I - the generator is working; II - the valve is broken; III - break in the valve circuit The oscilloscope allows you to accurately and quickly...
Checking the excitation winding of the generator rotor The health of the winding and the reliability of the fit of the brushes to the slip rings can be checked on the stand without disassembling the generator by measuring the...
Checking the generator stator The stator is checked separately, after disassembling the generator. Its winding leads must be disconnected from the rectifier valves. First of all, check with an ohmmeter or with...
Checking the generator rectifier valves Rectifier block valve test circuits A - check at the same time «positive» and «negative» valves; B - check «negative» valves; B - check «positive» valves; 1 - generator; 2 -...
Generator disassembly Generator parts 1 – «negative» brush; 2 - brush holder; 3- «positive» brush; 4 - block of the plug of the neutral wire; 5 - insulating bushings of the contact bolt; 6 - rectifier...
Generator Assembly 1. The generator is assembled in the reverse order of disassembly. 2. The misalignment of the holes in the paws of the generator covers should be no more than 0.4 mm. Therefore,...
Generator brush holder replacement If the brushes are worn out and protrude from the brush holder by less than 5 mm, then replace the brush holder with brushes. Before installing the brush holder, blow out the coal...
Replacement of generator rotor bearings 1. To remove the defective bearing from the cover on the drive side, unscrew the nuts of the screws tightening the bearing fastening washers, remove the washers with screws and...
Replacement of generator valves For modern generators with a rectifier unit, in the event of failure of one of the valves, the entire rectifier unit must be replaced. For legacy generators «positive» valves were...
Relay of a control lamp of a charge of the storage battery The RS-702 type relay is designed to turn on the control lamp in the instrument cluster when the generator voltage is not enough to charge the battery. The relay is installed in...
Voltage regulator RR-380 Voltage regulator PP-380 1 - thermocompensating resistor 19 Ohm, 6 W; 2 - additional resistors 5.5 Ohm, 25 W; 3 - throttle; 4 – a nut of fastening of a rack; 5 - rack with bottom...
Repair of the voltage regulator PP-380 Repair of the voltage regulator should be carried out only in exceptional cases; it is recommended to replace it. To repair the regulator, the following operations are allowed....
Starter — design description Starter ST-221 1 - drive gear; 2 - thrust half-ring of the overrunning clutch; 3 – overrunning clutch roller; 4 - centering ring of the overrunning clutch; 5 - the outer ring of...
Technical characteristics of the starter Technical characteristics of the starter Rated power, kW 1,3 Consumed current at rated power, no more than, A 260 (290*) Consumed current in the inhibited state, no more than, A...
Checking the starter on the stand Connection diagram for testing the starter on the stand 1 - starter; 2 - voltmeter with a scale limit of at least 15 V; 3 - 800 A rheostat; 4 – ammeter with shunt for 1000 A; 5 -...
Starter performance test 1. Closing switch 5 (see fig. Connection diagram for testing the starter on the stand ), when the voltage of the current source is 12 V, turn on the starter three times with...
Starter test in full braking mode 1. Slow down the ring gear of the stand, turn on the starter and measure the current, voltage and braking torque, which for the starter 35.3708 should be respectively no more than...
Testing of the starter at idle 1. Disengage the ring gear of the stand from engagement with the starter gear. Turn on the starter and measure the current consumed by it and the speed of the starter armature,...
Check of the traction relay of a starter Until 1983, a single-winding traction relay was installed on ST-221 starters. For a starter with such a relay, check the current consumption, which should be no more than 23 A. 1....
Checking the mechanical data of the starter 1. Check the pressure of the springs on the brushes with a dynamometer, which for new brushes should be 9.8±0.98 N (1±0.1 kgf). 2. If the brushes are worn out to a height of 12...
Starter disassembly Starter parts 1 - starter cover on the drive side; 2 - rubber plug; 3 – drive lever; 4 - traction relay; 5 - stator pole; 6 – service coil of the stator winding; 7 - shunt coil of...
Checking the technical condition of starter parts Anchor 1. Check with a megger or with a lamp powered by 220 V for a short circuit of the armature winding to ground. 2. Voltage through the lamp is supplied to the collector...
Starter Assembly 1. Before assembly, lubricate the screw splines of the armature shaft and freewheel hubs, gear and cover bushings with engine oil. Lubricate the driving ring of the drive with...