Toyota T100 1996 Service Manual page 1213

ST−6
Continuity
Ohmmeter
No Continuity
Ohmmeter
1996 TOYOTA T100 (RM449U)
STARTING (5VZ−FE) − STARTER
INSPECTION
1. INSPECT COMMUTATOR FOR OPEN CIRCUIT
Using an ohmmeter, check that there is continuity between the
segments of the commutator.
If there is no continuity between any segment, replace the ar-
mature.
P10584
2. INSPECT COMMUTATOR FOR GROUNDED
Using an ohmmeter, check that there is no continuity between
the commutator and armature coil core.
If there is continuity, replace the armature.
3. INSPECT COMMUTATOR FOR DIRTY AND BURNT
SURFACES
If the surface is dirty or burnt, clean it with sandpaper (No.400)
or on a lathe.
P10585
4. INSPECT COMMUTATOR CIRCLE RUNOUT
(a) Place the commutator on V−blocks.
(b) Using a dial indicator, measure the circle runout.
Maximum circle runout:
0.05 mm (0.0020 in.)
If the circle runout is greater than maximum, correct it on a lathe.
P10586
5. INSPECT COMMUTATOR DIAMETER
Using vernier calipers, measure the commutator diameter.
Standard diameter:
1.2 kW, 1.4 kW type: 30 mm (1.18 in.)
1.8 kW type:
Minimum diameter:
1.2 kW, 1.4 kW type: 29 mm (1.14 in.)
1.8 kW type:
If the diameter is less than minimum, replace the armature.
P10587
6. INSPECT UNDERCUT DEPTH OF SEGMENT
Check that the undercut depth is clean and free of foreign mate-
rial. Smooth out the edge.
Standard undercut depth:
1.2 kW, 1.4 kW type: 0.6 mm (0.024 in.)
1.8 kW type:
Minimum undercut depth:
If the undercut depth is less than minimum, correct it with a
hacksaw blade.
ST0040
35 mm (1.38 in.)
34 mm (1.34 in.)
0.7 mm (0.028 in.)
0.2 mm (0.008 in.)
ST0NK−01