Subaru Legacy 2004 Service Manual page 427

3. STATOR
1) Continuity test
Inspect the stator coil for continuity between each
end of the lead wires. If resistance is 1 M# or more,
the lead wire is broken, and so replace the stator
assembly.
(A)
(A) Stator
2) Insulation test
Inspect the stator coil for continuity between stator
core and each end of lead wire. If resistance is 1 #
or less, the stator coil is grounded, and so replace
the stator assembly.
4. BRUSH
1) Measure the length of each brush. If wear ex-
ceeds the service limit, replace the brush. Each
brush has the service limit mark (A) on it.
Generator
Brush length:
Service limit (1)
5.0 mm (0.197 in)
Standard (2)
18.5 mm (0.728 in)
SC-00047 2) Checking brush spring for proper pressure
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 less than 2.648 N (270 g,
9.52 oz), replace the brush spring with a new one.
The new spring must have a pressure of 4.609 to
5.786 N (470 to 590 g, 16.58 to 20.810 oz).
SC-00048
5. BEARING (FRONT SIDE)
Check the front ball bearing. If the resistance is felt
while rotating, or if abnormal noise is heard, re-
place the ball bearing.
SC(H4SO 2.0)-19
STARTING/CHARGING SYSTEMS
(1)
(A)
(2)
SC-00162
SC-00093