Subaru Legacy 2003 Service Manual page 1831

STARTING/CHARGING SYSTEMS
E: INSPECTION
1. ARMATURE
1) Check the commutator for any sign of burns of
rough surfaces or stepped wear. If wear is of a mi-
nor nature, correct it by using sand paper.
2) Run-out test
Check the commutator run-out, and then replace if
it exceeds the limit.
Commutator run-out:
Standard
0.05 mm (0.0020 in)
Service limit
Less than 0.10 mm (0.0039 in)
(A) Dial gauge
(B) V-block
3) Depth of segment mold
Check the depth of segment mold.
Depth of segment mold:
0.5 mm (0.020 in)
( B )
( C )
(A) Depth of mold
(B) Segment
(C) Mold
STARTER
( A )
( B )
SC-00021
( A )
SC-00022
SC(H4DOSTC)-10
4) Armature short-circuit test
Check the armature for short-circuit by placing it on
growler tester. Hold a iron sheet against the arma-
ture core while slowly rotating armature. A short-
circuited armature will cause the iron sheet to vi-
brate and to be attracted to core. If the iron sheet is
attracted or vibrates, the armature, which is short-
circuited, must be replaced or repaired.
(A) Iron sheet
(B) Growler tester
5) Armature ground test
Using a circuit tester, touch one probe to the com-
mutator segment and the other to shaft. There
should be no continuity. If there is continuity, the ar-
mature is grounded.
Replace the armature if it is grounded.
2. YOKE
Make sure pole is set in position.
3. OVERRUNNING CLUTCH
Inspect the teeth of pinion for wear and damage.
Replace if it is damaged. Rotate the pinion in direc-
tion of rotation (counterclockwise). It should rotate
smoothly. But in opposite direction, it should be
locked.
CAUTION:
Do not clean overrunning clutch with oil to pre-
vent grease from flowing out.
( A )
( B )
SC-00023
SC-00024