S13S13

CHARGING SYSTEM — Alternator — Rotor Slip Ring Check (Cont'd) / Brush Check / Stator Check

EL-28prose procedure

Rotor Slip Ring Check (Cont'd)

  1. 2
    Insulator test
    Continuity exists. ... Replace rotor.
    Ohmmeter connected to rotor slip ring for insulator test
    SEL630D
  2. 3
    Check slip ring for wear.
Slip ring minimum outer diameter
Refer to S.D.S.

Brush Check

  1. 1
    Check smooth movement of brush.
    Not smooth ... Check brush holder and clean.
  2. 2
    Check brush for wear.
    Replace brush if it is worn down to the limit line.
    Brush wear limiting line shown on brush assembly
    SEL631D
  3. 3
    Check brush lead wire for damage.
    Damaged ... Replace.
  4. 4
    Check brush spring pressure. Measure brush spring pressure with brush projected approximately 2 mm (0.08 in) from brush holder.
    Not within the specified values ... Replace.
    Measuring brush spring pressure with brush projected approximately 2 mm (0.08 in) from brush holder
    EE049
Spring pressureBrush projected approximately 2 mm (0.08 in) from brush holder
Refer to S.D.S.

Stator Check

To test the stator or diode, separate them by unsoldering the connecting wires.

Stator Check

  1. 1
    Continuity test
    No continuity ... Replace stator.
    Ohmmeter connected to stator lead wire for continuity test
    SEL383L

Cross References

Search Manual

Search pages, specs, and procedures