Auto news on Youtube May 28 2018

Hey guys

In this video

We will maintain the car alternator

this car alternator not working

Its price is up to 500 $

It was necessary to try to maintain it

Saving money and knowing everything about car alternator

The faults are divided into two parts

Mechanical failures

And electric faults

Because any device must have a mechanical part and an electrical part

Checking the mechanical part is very easy

Checking bearing is very easy and is the most important

by moving car alternator pulley

Check the bearing sound it is normal or not

Move up and down

to Checking clearance and friction

good no Mechanical failures

Now the electrical faults

1- open or short circuit rotor winding

2-rotor regulator & electronic circuit

Battery charging Voltage regulator

To control the charging current

3-stator winding

4-rotor commutator segment

we will also Checking stater winding

open or short circuit

Also internal diodes

to convert current from ac to dc

to charging the car battery

Now we start to open

And began the inspection and maintenance

We forgot to talk about carbon brushes

Carbon brushes are the most problem

in car alternators

It is important to transfer current from the rotor to regulator circuit

if Carbon brushes not good

car alternator not working

bearing is good

& commutator segment is good

The easiest thing to check Carbon brushes

Carbon brushes is very good

Its height is also good

Check out

There is an opening in stator coils

Cable must be sold well

A high-watt soldering must be used

to can sold well

Now we will Sold the cable

This is low-watt soldering not good

A high-watt soldering must be used

If from the beginning it was used, the problem did not occur

A high-watt soldering must be used

Because of a small problem we would have paid a lot of money

We can save money now

only by Soldering

Now everything is good

We use snapper

to clean commutator segment

Also check Carbon Brush

Compression Tension Torsion Spring

it is very good

Also check all stator wiring connection

We start testing the winding

We testing short circuit

and open circuit

and conductivity between coils & earth terminal

this is rotor coil is good

no conductivity between coils & earth

it is good

& testing stator winding

testing 3 wires one by one

no conductivity between coils & earth

testing another 3 wires one by one

no conductivity between coils & earth

& testing Carbon Brush conductivity

it is good

one terminal connected to ground

Now we will assemble the parts

to close the cover

must be holding Carbon Brush

The next part of the video

We will solve all problems

if Carbon Brush broken or not good

remove Carbon Brush holder

remove Carbon Brush holder

Now we change Carbon Brush

Now we change Carbon Brush

Carbon Brush price is 2 $

Carbon Volume not same

Adjust the carbon size Use Snapper

now same

Also check clearance

now every thing is good

to close the cover

must be holding Carbon Brush

By a wire of steel

By this we can close the alternator

We'll do like that

Do not forget the rubber

To prevent dust

must be holding Carbon Brush

The other one

holding by steel wire

until closed the alternator

now we can remove steel wire

now every thing is good

testing

now every thing is good

We easily repaired and maintained

car alternator

Thank you very much