Suzuki Grand Vitara XL-7 Service Manual page 336

4. ARMATURE
1. Armature
2. V-block
3. Magnetic stand
4. Dial gauge
"a"
1. Commutator segment
2. Insulator
D Inspect commutator for dirt or burn. Correct with sandpaper or
lathe, if necessary.
D Check commutator for uneven wear with armature supported
on V-blocks. If deflection of dial gauge pointer exceeds limit,
repair or replace.
NOTE:
Below specification presupposes that armature is free
from bend. Bent armature must be replaced.
Commutator out of round
Standard : 0.05 mm (0.002 in.) or less
Limit : 0.1 mm (0.004 in.)
D Inspect commutator for wear. If diameter is below limit, replace
armature.
Commutator outside diameter
Limit : 31.4 mm (1.24 in.)
D Inspect commutator for insulator depth. Correct or replace if
below limit.
Commutator insulator depth "a"
Standard : 0.5 – 0.8 mm (0.02 – 0.031 in.)
CRANKING SYSTEM 6G-7