Suzuki 2000 Grand Vitara SQ416, Service Manual

Page: 689 / 729

YH4
GRAND
VITARA
Insulator
CORRECT
0.4 – 0.8 mm
(0.015 – 0.023 in.)
Commutator
segments
INCORRECT
CRANKING SYSTEM 6G1-9
Inspect commutator for insulator depth. Correct or replace if be-
low limit.
Commutator mica depth
Standard: 0.4 – 0.6 mm (0.015 – 0.023 in.)
Limit:
0.2 mm (0.0078 in.)
Ground test
Check commutator and armature core. If there is continuity, ar-
mature is grounded and must be replaced.
Open circuit test
Check for continuity between segments. If there is no continuity
at any point, there is an open circuit and armature must be re-
placed.
2. FIELD COIL
Ground test
Check continuity between brush and bare surface.
If there is continuity, field windings are grounded.
The yoke ass’y must be replaced.
3. BRUSH
Check brushes for wear. If below limit, replace brush.
Brush length
Standard: 17.0 mm (0.67 in.)
Limit:
11.5 mm (0.45 in.)