T100 Regular Cab Pickup 2WD L4-2693cc 2.7L DOHC MFI (1998)
Using vernier calipers, measure the commutator diameter.
Standard diameter:
1.2 kW, 1.4 kW type: 30 mm (1.18 in.)
1.8 kW, 2.0 kW type: 35 mm (1.38 in.)
Minimum diameter:
1.2 kW, 1.4 kW type: 29 mm (1.14 in.)
1.8 kW, 2.0 kW type: 34 mm (1.34 in.)
If the diameter is less than minimum, replace the armature.
INSPECT UNDERCUT DEPTH OF SEGMENT
Check that the undercut depth is clean and free of foreign material. Smooth out the edge.
Standard undercut depth:
1.2 kW, 1.4 kW type: 0.6 mm (0.024 in.)
1.8 kW, 2.0 kW type: 0.7 mm (0.028 in.)
Minimum undercut depth:
0.2 mm (0.008 in.)
If the undercut depth is less than minimum, correct it with a hacksaw blade.
INSPECT FIELD COIL FOR OPEN CIRCUIT
Using an ohmmeter, check that there is continuity between the lead wire and field coil brush lead.
If there is no continuity, replace the field frame.
INSPECT THAT FIELD COIL IS NOT GROUNDED
Using an ohmmeter, check that there is no continuity between the field coil end and field frame.
If there is continuity, repair or replace the field frame.