In the article we will consider disassembling the generator and replacing the generator elements

We prepare the car for the task and remove the generator, as described in the previous article

Repair of UAZ-3151, -31512, -31514, -31519 car generatorRepair of the UAZ-3151, -31512, -31514, -31519 car generator

Unscrew the capacitor mounting screw with a screwdriver and remove the capacitor

Repair of UAZ-3151, -31512, -31514, -31519 car generatorUAZ-3151, -31512, -31514, -31519 car generator repair

Unscrew the nut of the output "+" by 10 with a key and remove the insulating bushings from the output

Repair of UAZ-3151, -31512, -31514, -31519 car generatorUAZ-3151, -31512, -31514, -31519 car generator repair

With a screwdriver, unscrew the two screws securing the rear cover casing

Lifting the casing

Remember the order of connecting the wires

Repair of UAZ-3151, -31512, -31514, -31519 car generatorRepair of the UAZ-3151, -31512, -31514, -31519 car generator

Disconnect the wires from the terminals

Repair of UAZ-3151, -31512, -31514, -31519 car generatorRepair of the UAZ-3151, -31512, -31514, -31519 car generator

Unscrew the nut by 10 with a key and remove the output with an insulating sleeve from the lid

With a phillips screwdriver, unscrew the two screws securing the voltage regulator

Repair of UAZ-3151, -31512, -31514, -31519 car generatorRepair of the UAZ-3151, -31512, -31514, -31519 car generator

Remove the regulator and unscrew the two screws securing the contact group

Removing the voltage regulator

Repair of UAZ-3151, -31512, -31514, -31519 car generatorRepair of the UAZ-3151, -31512, -31514, -31519 car generator

Unscrew the brush holder mounting screw with a screwdriver and remove it

Repair of UAZ-3151, -31512, -31514, -31519 car generatorRepair of the UAZ-3151, -31512, -31514, -31519 car generator

Unscrew the output extension "+" with a key for 10

For assembly, we mark the position of the covers and the generator stator

UAZ-3151, -31512, -31514, -31519 Car generator repairRepair of the UAZ-3151, -31512, -31514, -31519 car generator

Unscrew the nuts of the four bolts by 10 with the head and remove the bolts that tighten the generator covers

Repair of UAZ-3151, -31512, -31514, -31519 car generatorRepair of the UAZ-3151, -31512, -31514, -31519 car generator

With a mandrel or a head with a diameter of 32 mm, we pull off with light blows, and then with two screwdrivers we pry and remove the back cover with a stator from the front cover

Repair of UAZ-3151, -31512, -31514, -31519 car generatorRepair of the UAZ-3151, -31512, -31514, -31519 car generator

Unscrew the three nuts of fastening the stator terminals to the rectifier unit with the head by 8

Remove the stator from the lid

Repair of UAZ-3151, -31512, -31514, -31519 car generatorUAZ-3151, -31512, -31514, -31519 car generator repair

We remove three contact bolts from the lid

Unscrew the generator output nut "+" by 10 with a key

Repair of UAZ-3151, -31512, -31514, -31519 car generatorRepair of the UAZ-3151, -31512, -31514, -31519 car generator

Remove the contact bolt with the insulating insert and remove the rectifier unit

Repair of the UAZ-3151, -31512, -31514, -31519 car generator

With a megaohmmeter, we check the stator windings for a short circuit

In the absence of a short circuit, the resistance tends to infinity

Repair of the UAZ-3151, -31512, -31514, -31519 car generator

Check the winding for wire breakage

In the absence of breakage, the winding resistance will be close to zero

Repair of the UAZ-3151, -31512, -31514, -31519 car generator

Repair of the UAZ-3151, -31512, -31514, -31519 car generator

In the same way, we check the rotor for the absence of a short circuit of the winding to the "mass" and breakage of the windings

The faulty rotor and stator are being replaced

Repair of the UAZ-3151, -31512, -31514, -31519 car generator

We check the valves of the rectifier unit with an ohmmeter, for this we connect the probes of the device to the terminals of the valves.

The valve (diode) has a one-way conductivity

A faulty one, as a rule, passes current in both directions

The rectifier unit is replaced in the assembly when one of its elements fails.

Repair of the UAZ-3151, -31512, -31514, -31519 car generator

Unscrew the pulley nut by 19 with the head, holding the pulley with a pipe wrench

Repair of UAZ-3151, -31512, -31514, -31519 car generatorRepair of the UAZ-3151, -31512, -31514, -31519 car generator

Pull the puller pulley from the rotor shaft and remove the pulley with the impeller

Repair of UAZ-3151, -31512, -31514, -31519 car generatorRepair of the UAZ-3151, -31512, -31514, -31519 car generator

With a beard, we knock the key out of the shaft

Removing the remote bushing

Repair of the UAZ-3151, -31512, -31514, -31519 car generator

With the key "for 8", we turn off the four nuts for fixing the bearing covers.

During assembly, the joints were bent — the ends of the screws were crumpled.

If the screws turn when unscrewing, it is necessary to tighten the nuts again and sharpen the crumpled ends with a file or saw with a hacksaw

In this case, new screws may be required during assembly

Repair of the UAZ-3151, -31512, -31514, -31519 car generator

Remove the outer bearing cover

Repair of UAZ-3151, -31512, -31514, -31519 car generatorUAZ-3151, -31512, -31514, -31519 car generator repair

With a mandrel or a head with an external diameter of 40 mm, we knock the bearing out of the cover together with the rotor

Repair of UAZ-3151, -31512, -31514, -31519 car generatorRepair of the UAZ-3151, -31512, -31514, -31519 car generator

We press the bearing from the rotor shaft with a puller

Remove the inner bearing cover with screws and the remote sleeve

We dismantle the rear rotor bearing with a puller similar to the front one

We clean all the parts from dirt and coal dust, blow them with compressed air

Heavily oiled contact rings are wiped with a cloth soaked in gasoline and cleaned with fine sandpaper

In case of severe wear, we grind the rings or replace the rotor.

We assemble the generator in the following order

Repair of UAZ-3151, -31512, -31514, -31519 car generatorRepair of the UAZ-3151, -31512, -31514, -31519 car generator

With a suitable bushing or a high head for 12, we press the rear bearing onto the rotor shaft

We install the front bearing in the generator cover, acting on the outer ring

Repair of UAZ-3151, -31512, -31514, -31519 car generatorRepair of the UAZ-3151, -31512, -31514, -31519 car generator

We install the bearing covers by fixing them with screws

Putting a pulley under the lid, we close the nuts, crushing the ends of the screws with a chisel

Repair of UAZ-3151, -31512, -31514, -31519 car generatorRepair of the UAZ-3151, -31512, -31514, -31519 car generator

We install a remote bushing on the generator shaft

With a suitable piece of pipe or a head on 17, we press the bearing together with the cover onto the shaft

Next, we assemble the generator in reverse order

After assembly, the rotor should rotate, without jamming and clicks, and have no backlash