Kia Optima DL3 Quiz
Engine Electrical System

Generator

In this manual: Engine Electrical System
General Information — 8Advanced Driver Assistance System (ADAS) — 21Maintenance — 27Engine Mechanical System — 45Engine Electrical System — 11Emission Control System — 11Engine Control System/Fuel System — 25Automatic Transmission — 20Drive Shaft and Axle — 7Suspension System — 22Steering — 7Restraints — 11Brake System — 22Body (Interior and Exterior) — 116Body Electrical System — 90Heating, Ventilation, and Air Conditioning — 32
19steps
~114min
4/5difficulty
0102030405011.89N·mlb·ft
Tightening torque found on this page
Done 0 of 19

Description and Operation

Description

The AC generator has eight built-in diodes, each of which converts alternating current to direct current.

Therefore, direct current appears at the generator "B" terminal.

In addition, the charging voltage of this generator is controlled by the battery voltage sensing system.

The generator is regulated by the battery voltage sensing system.

The main components of the generator are the rotor, stator, rectifier, capacitor, brushes, bearings, and the drive pulley for the poly-V belt.

The brush holder contains a built-in electronic voltage regulator.

1. Brush
2. Common Pulley
3. Rotor
4. Stator
5. Rectifier


1. Brush 2. OAP Pulley 3. Rotor 4. Stator 5. Rectifier


Specifications

Specification

Item Specification
Rated Voltage 13.5 V, 120 A
Operating Speed 1000–18,000 rpm
Voltage Regulator Built-in IC regulator type
Regulator Set Voltage External Mode Refer to the graph below
Internal Mode 14.55 ± 0.3 V
Temperature Gradient External Mode 0 ± 3 mV/°C
Internal Mode -3.5 ± 2 mV/°C

Components and Component Location

Components

1. Pulley
2. Front Housing
3. Front Bearing
4. Stator
5. Rotor
6. Rear Bearing		 7. Rear Housing
8. Rectifier Assembly
9. Regulator Assembly
10. Rear Cover
11. Nut

Circuit Diagrams

Wiring Diagram

Repair Procedures

Removal

  1. Disconnect the negative (-) battery terminal.

  2. Remove the water pipe bracket bolts (A).

    Tightening Torque: 9.8–11.8 N·m

  3. Remove the drive belt.

    (Refer to Engine Mechanical System - "Drive Belt")

  4. Disconnect the generator connector (A) and the cable nut (B) from the generator. Terminal "B".

    Tightening Torque: 9.8–11.8 N·m

  5. Remove the through bolt and remove the alternator (A).

    Tightening torque:

    [M10] 29,4–41 N·m

    [M8] 26,4–37 N·m

Installation

  1. Install in the reverse order of removal.

Disassembly

  1. Loosen the nuts (B) and remove the cover (A).

  2. Loosen the mounting bolts (A) and remove the regulator assembly (B).

  3. Remove the slip ring guide (A).

  4. Remove the IDM cap. (With IDM)

  5. Remove the generator pulley (A) after loosening the mounting nut. (With IDM)

  6. Loosen the bolts (A) and remove the rear cover (B).

  7. Separate the rotor (A) and housing (B).

  8. Installation is performed in the reverse order of removal.

Installation

  1. Assemble in the reverse order of disassembly.

Inspection

[Rotor]

  1. Check that there is continuity between the slip rings (C).

  2. Make sure there is no continuity between the slip rings and the rotor (B) or the rotor shaft (A).

  3. If the rotor fails the continuity check, replace the generator.

[Stator]

  1. Check for continuity between each pair of wires (A).

  2. Make sure there is no continuity between each terminal and the coil core.

  3. If the coil fails the continuity check, replace the generator.

Test yourself

A quick Kia Optima DL3 quiz: every answer comes with an explanation and a link to the manual page.