CHARGING SYSTEM — Alternator — Disassembly (Cont'd) / Rotor Slip Ring Check / Brush Check / Stator and Diode Check / Assembly
EL-38prose procedureBrush wear limit is the only spec actually printed here (10 mm / 0.39 in) — slip-ring min OD and brush-spring pressure live on the SDS page.
Disassembly (Cont'd)
- 5Remove 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.
UEL041 - 6Bearings can be removed using suitable bearing pullers.
Rotor Slip Ring Check
- 1With Rotor/Front Cover and Stator separated, check continuity of rotor slip rings. No continuity ... Replace rotor.
UEL042 - 2Insulator test. Continuity exists ... Replace rotor.
UEL043 - 3Check slip ring for wear. Slip ring minimum outer diameter: Refer to "Service Data and Specifications".
BRUSH CHECK
- 1Check brush length for wear. Replace brush if it is worn down to 10 mm (0.39 in) or below.
UEL044 - 2Check 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.
| Specification | Value |
|---|---|
| Brush minimum length | 10mm (0.39 in) |
Brush minimum length
10mm (0.39 in)
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.
See also
Service Data and Specifications