Charging System - Alternator - Disassembly (Cont'd) / Rotor Slip Ring Check / Brush Check / Stator and Diode Check / Assembly

EL-38prose procedure

Continued from EL-37

Alternator - Disassembly (Cont'd)

5
Remove screws holding stator assembly to front cover (4) and separate stator from rotor. The stator field coils are soldered to the regulator/diode pack and should not be separated. Replace stator, regulator and diode pack as a complete assembly if found defective.
6
Bearings can be removed using suitable bearing pullers.

Rotor Slip Ring Check

1
With Rotor/Front Cover and Stator separated, check continuity of rotor slip rings. No continuity ... Replace rotor.
2
Insulator test. Continuity exists ... Replace rotor.
3
Check slip ring for wear. Slip ring minimum outer diameter: Refer to "Service Data and Specifications".

Brush Check

1
Check brush length for wear. Replace brush if it is worn down to 10 mm (0.39 in) or below.
2
Check brush spring pressure. Measure brush spring pressure with brush pressed to moulding. Spring pressure: Refer to "Service Data and Specifications". Not within the specified values ... Replace.

STATOR AND DIODE CHECK

NOTE

The stator and diode assembly cannot be separated. If the alternator output voltage is less than specified in "Service Data and Specifications", the stator/diode assembly should be replaced as a unit.

Alternator - Assembly

NOTE

The alternator should be assembled using the reverse process to disassembly.

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