Hyundai i-30: Charging System / Alternator

Hyundai i30 (PD) 2018-2024 Service Manual / Engine Electrical System / Charging System / Alternator

Description and operation
Description
The Alternator has eight built-in diodes, each rectifying AC current to DC current.
Therefore, DC current appears at alternator "B" terminal.
In addition, the charging voltage of this alternator is regulated by the battery voltage detection system.
The alternator is regulated by the battery voltage detection system.
The main components of the alternator are the rotor, stator, rectifier, capacitor brushes, bearings and V-ribbed belt pulley.
The brush holder contains a built-in electronic voltage regulator.

1. Brush
2. Drive belt pully
3. Rotor
4. Stator

Specifications
Specification
Item
Specification
Rated voltage
 13.5 V , 130 A
Speed in use
 1,000 - 18,000rpm
Pin
 1 (LIN)
Pulley Type
OAP pulley

Repair procedures
Removal
1.
Turn the ignition switch OFF and disconnect the battery (-) terminal.
2.
Remove the drive belt.
(Refer to Engine Mechanical System - "Drive Belt")
3.
Disconnect the alternator connector (A) and then remove the cable nut (B) from the alternator "B" terminal.
Tightening torque :
18.6 - 24.5 N.m (1.9 - 2.5 kgf.m, 13.7 - 18.1 Ib-ft)

4.
Remove the alternator mounting bolts.
Tightening torque :
29.4 - 41.2 N.m (3.0 - 4.2 kgf.m, 21.7 - 30.4 Ib-ft)
5.
Remove the alternator (A).
Installation
1.
Install in the reverse order of removal.
Disassembly
1.
Remove the OAP cap (A).

  
•
When installing, replace with new OAP cap.
2.
Remove the OAP pulley (A) by using the SST (09373-27000).
3.
Remove the alternator cover (A) after loosening the mounting nut.
4.
Remove the regulator assembly (A).
5.
Remove the stator leads (A).
6.
Remove the 4 through bolts (A).
7.
Separate the rotor (A) and cover (B).
8.
Install in the reverse order of removal.
Reassembly
1.
Reassemble in the reverse order of disassembly.
  
•
When installing, replace with new OAP cap.
Inspection
Rotor
1.
Check that there is continuity between the slip rings (C).
2.
Check that there is no continuity between the slip rings and the rotor (B) or rotor shaft (A).
3.
If the rotor fails either continuity check, replace the alternator.
Stator
1.
Check that there is continuity between each pair of leads (A).
2.
Check that there is no continuity between each lead and the coil core.
3.
If the coil fails either continuity check, replace the alternator.

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