Generator / Alternator for auto

Electric system auto parts: Generator / Alternator

There is a generator in each car. It serves to recharge accumulator battery and to supply the whole car with electric current. The engine drives in the result of firing. Generator, in its turn, is joined with engine and due to this electric currency is generated. The principle used here is known to everybody by the example of the cycle generator. Kinetic energy generated by the engine is transformed into the electric power. In modern cars alternating-current generator is used everywhere, but in old cars you can still meet direct-current generator.

If generator is faulty, accumulator battery is not supplied. It is a serious problem faced as a rule when you turn on ignition. In modern cars there is an indicator lamp that indicates generator faultiness, but it doesn’t mean to be a signal that the generator is completely broken down. As generator plays a very important role in vehicle operation, it is necessary to diagnose it as soon as possible. In the majority of cases generator can be repaired and there is no necessity in a complete change. Sometimes the cause of faultiness is a broken down diode or voltage regulator. Another cause may be a belt breakage, wire disconnection or bad contact.

Works with generator should be done with utmost care. A very high voltage can put generator out of action that is why similar works should be done by specialists. Automotive electrician will quickly find and correct the cause of the fault. If you need any other car parts for your car, visit our Internet shop. Here you will find break blocks, spark plugs, rear-view mirrors, horns, cylinders, and many other car parts.

Generator / Alternator failures

  • slip rings are soiled, burned or oiled;
  • drive belt slips;
  • excitation circuit is broken off;
  • bearings are worn-out or damaged;
  • nut of a pulley of the alternator is loosened;
  • rotor contacts to stator poles;
  • bracket seat is worn-out;
  • periodical brushes jamming.

Signs of alternator failures

  • battery is discharged or boils away;
  • excessive noise when the unit starts working;
  • light signal of a low charge battery is active at the started engine;
  • dim headlights;
  • quiet sounds and jingle are audible when engine operates;
  • admissible car electric system voltage level is exceeded;
  • headlights brightness changes sharply according to number of revolutions.

Causes of Generator / Alternator failures

  • use of low-quality components;
  • worn out and oxidized alternator;
  • malfunctions in a voltage control relay;
  • clamping springs are damaged or deformed;
  • incorrect operation of the part out of the normal mode;
  • external influence of:
    • water;
    • high temperature;
    • salts;
    • chemical reagents on road surface;
    • dirt.

Diagnostics

The diagnostics of the unit should be carried out with the help of specialized devices, the ammeter and the voltmeter namely. It is possible to do it yourself or with help of service station specialists. Condition of the component is defined at diagnostic stands.

Search of the alternator failures should be started with measurement of voltage level on accumulator battery terminals. Then it is necessary to start the engine and take readings of devices once again. They should meet the following standards:

  • before start — 12V;
  • after start — 13,8–14,4V.

High figures are indicatives of failure of the voltage control relay, lower ones point to the lack of alternating current.

Repair and replacement of Generator / Alternator

Usually the alternator service life is about 160 000 operational kilometers. It is often sufficient to replace faulty units or components to eliminate mechanical malfunctions. Some old alternators models may need turning of slip rings on a lathe. Drive belts replacement is performed at service life expiry, maximum tension or severe wear. At some service stations it is possible to carry out the part rewind, however it is expensive and inexpedient.

Popular Generator / Alternator manufacturers
Original Generator / Alternator from HELLA producer Original Generator / Alternator from HITACHI producer Original Generator / Alternator from LUCAS ELECTRICAL producer Original Generator / Alternator from ERA Benelux producer Original Generator / Alternator from VALEO producer Original Generator / Alternator from BOSCH producer Original Generator / Alternator from CV PSH producer Original Generator / Alternator from HERTH+BUSS JAKOPARTS producer
Original Generator / Alternator from DENSO producer Original Generator / Alternator from LAUBER producer Original Generator / Alternator from ROTOVIS Automotive Electrics producer Original Generator / Alternator from MAGNETI MARELLI producer Original Generator / Alternator from NIPPARTS producer Original Generator / Alternator from DELCO REMY producer Original Generator / Alternator from MAPCO producer Original Generator / Alternator from HC-Cargo producer
Top quality parts Generator / Alternator for your car
Article №: A6052
Buy AS-PL Alternator A6052 for car at low price £ 150,70
-23%
£ 150,70
£ 195,72
incl. 20% VAT, Shipping
x Alternator | AS-PL A6052
Parts Details
  • Alternator Charge Current [A]: 100
  • Voltage [V]: 12
  • Length 1 [mm]: 26
  • Length 2 [mm]: 60
  • Length 3 [mm]: 74
In stock Details
Buy DENSO Alternator DAN930 for car at low price £ 113,37
-23%
£ 113,37
£ 147,24
incl. 20% VAT, Shipping
x Alternator | DENSO DAN930
Parts Details
  • Alternator Charge Current [A]: 150
  • Rated Voltage [V]: 14
  • Belt Pulley Ø [mm]: 54,3
  • Pulleys: with freewheel belt pulley
  • Number of ribs: 6
  • Vehicle Main Current: for vehicles with 12V main current
  • New Part:
In stock Details
Buy VALEO Alternator 746032 for car at low price £ 129,91
-23%
£ 129,91
£ 168,72
incl. 20% VAT, Shipping
x Alternator | VALEO 746032
Parts Details
  • Alternator Charge Current [A]: 150
  • Voltage [V]: 14
  • Belt Pulley Ø [mm]: 57,5
  • Pulleys: with belt pulley
  • Number of ribs: 6
  • Service exchange part:
  • Supplementary Article/Supplementary Info: with integrated regulator
  • Position / Degree: L 40
  • Rotation Direction: Clockwise rotation
  • Connector / Clamp: without connection for speed sensor
  • Fastening Type: Four-point mounting
  • Weight [kg]: 6,9
In stock Details
Buy DENSO Alternator DAN1119 for car at low price £ 134,53
-23%
£ 134,53
£ 174,72
incl. 20% VAT, Shipping
x Alternator | DENSO DAN1119
Parts Details
  • Alternator Charge Current [A]: 120
  • Rated Voltage [V]: 14
  • Belt Pulley Ø [mm]: 54,3
  • Pulleys: with freewheel belt pulley
  • Number of ribs: 6
  • Vehicle Main Current: for vehicles with 12V main current
  • New Part:
In stock Details
Article №: A2022
Buy AS-PL Alternator A2022 for car at low price £ 122,61
-23%
£ 122,61
£ 159,24
incl. 20% VAT, Shipping
x Alternator | AS-PL A2022
Parts Details
  • Alternator Charge Current [A]: 100
  • Voltage [V]: 12
  • Pulleys: without free-wheel belt pulley
  • Length 1 [mm]: 35,5
  • Length 2 [mm]: 13
  • Length 3 [mm]: 66,5
In stock Details
Article №: A2003
Buy AS-PL Alternator A2003 for car at low price £ 106,23
-23%
£ 106,23
£ 137,96
incl. 20% VAT, Shipping
x Alternator | AS-PL A2003
Parts Details
  • Alternator Charge Current [A]: 100
  • Voltage [V]: 12
  • Length 1 [mm]: 36
  • Length 2 [mm]: 13
  • Length 3 [mm]: 69
In stock Details
Buy HELLA Alternator 8EL 011 710-791 for car at low price £ 126,83
-23%
£ 126,83
£ 164,72
incl. 20% VAT, Shipping
x Alternator | HELLA 8EL 011 710-791
Parts Details
  • Alternator Charge Current [A]: 140
  • Voltage [V]: 14
  • Belt Pulley Ø [mm]: 56
  • Number of ribs: 6
  • Service exchange part:
  • Control Unit ID: PL61
In stock Details
Article №: A9035
Buy AS-PL Alternator A9035 for car at low price £ 159,76
-23%
£ 159,76
£ 207,48
incl. 20% VAT, Shipping
x Alternator | AS-PL A9035
Parts Details
  • Alternator Charge Current [A]: 120
  • Voltage [V]: 12
  • Length 1 [mm]: 102
  • Length 2 [mm]: 63
In stock Details
  • Contacts
  • TOS
  • Privacy Policy
  • Company
  • Payment
  • Shipping
  • Return of goods
  • Replacement