Celica ST Ltd Ed Liftback L4-1762cc 1.8L DOHC MFI (1997)
Armature Coil: Testing and Inspection
Armature Coil / 7A-FE
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 armature.
2. INSPECT COMMUTATOR FOR GROUND
Using an ohmmeter, check that there is no continuity between the commutator and armature coil core.
If there is continuity, replace the armature.
Commutator
1. INSPECT COMMUTATOR FOR DIRTY AND BURNT SURFACES
If the surface is dirty or burnt, correct with sandpaper (No.400) or a lathe.
2. INSPECT COMMUTATOR CIRCLE RUNOUT
a. Place the commutator on V-blocks.
b. Using a dial gauge, 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.
