4) Check the continuity between slip ring and rotorcore or shaft. If there is continuity, replace the rotorbecause the rotor coil is grounded.
5) Check the bearings. If there is any noise, or therotor does not rotate smoothly, replace the bear-ings.SC-00045
(A)Diode lead(B)Heat sink (positive side)

SC(STI)-20
Generator
STARTING/CHARGING SYSTEMS
3.
STATOR COIL
1) Inspect continuity between the stator coil lead
wire terminals. If the resistance is 1 M
Ω
or more, re-
place the stator coil.
2) Inspect the continuity between the stator coil sta-
tor core and lead wire terminals. If the resistance is
1
Ω
or less, replace the stator coil.
4. BRUSH
1) Measure the length of each brush. Replace the
brush if wear exceeds service limits. There is a ser-
vice limit mark (A) on each brush.
Brush length:
Standard (1)
18.5 mm (0.728 in)
Limit (2)
5.0 mm (0.197 in)
2) Using a spring pressure indicator, push the
brush into the brush holder until its tip protrudes 2
mm (0.08 in). Then measure the pressure of brush
spring. If the pressure is 2.648 N (270 g, 9.52 oz) or
less, replace the brush spring with a new part.
4.609 — 5.786 N (470 — 590 g, 16.58 — 20.810
oz) pressure is required on the new spring.
5.
BALL BEARING
Check the ball bearings. Replace the ball bearings
if there is resistance in the rotation, or if there is any
abnormal noise.
6.
OTHER INSPECTIONS
Check that the generator does not have deforma-
tion, cracks and any other damage.
(A)
Stator coil
(A)
SC-00047
SC-00048
SC-02313
(A)
(1)
(2)
SC-00093
