Field Frame; Brushes; Inspect Undercut Depth Of Segment - Toyota 7M-GE Repair Manual

ST004
/
No continuity
ST0201
0
Field Frame (Field Coil)
1.
INSPECT FIELD COIL FOR OPEN CIRCUIT
Using an ohmmeter, check that there is continuity be-
tween the lead wire and field coil brush lead.
If there is no continuity, replace the field frame.
2.
INSPECT THAT FIELD COIL IS NOT GROUNDED
Using an ohmmeter, check that there is no continuity be-
tween the field coil end and field frame.
If there is continuity, repair or replace the field frame.
Brushes
INSPECT BRUSH LENGTH
Using vernier calipers, measure the brush length.
Standard length:
1 .O kW type
13.5 mm (0.531 in.)
1.4 kW type 15.5 mm (0.610 in.)
Minimum length:
1.0 kW type
8.5 mm (0.335 in.)
1.4 kW type
10.0 mm (0.394 in.)
If the length is less than minimum, replace the brush
holder and field frame.