6-14
f. INSPECTION (Unit inspection)
• BRUSH HOLDER ASSEMBLY
Measure the brush length.
If the measurement is less than the service limit, replace the
brush holder assembly.
• ROTOR
1) Check to be sure that there is continuity between the slip
rings.
2) Check to see that there is no continuity between a slip ring
and the rotor, and between a slip ring and the rotor shaft.
3) Measure the slip ring O.D.
[3]
ROTOR
[2] ROTOR SHAFT
[1] SLIP
RINGS
4) If the measurement is less than the service limit, replace
the rotor.
[1] E (GROUND)
P
4
P
3
P
2
P
1
P'
1
B
[1]
E (GROUND)
[2] Circuit diagram:
P
1
P
2
P
3
P
4
P'
1
B
STANDARD
SERVICE LIMIT
10.5 mm (0.41 in)
8.4 mm (0.33 in)
STANDARD
SERVICE LIMIT
14.4 mm (0.57 in)
14.0 mm (0.55 in)
• RECTIFIER ASSEMBLY
• Inspect the rectifier assembly by removing it from the
outboard motor.
Check for continuity between the B terminal and the respective
P terminals (P
1
, P
2
, P
3
and P
4
), and between the E terminal and
the respective P terminals (P
1
, P
2
, P
3
and P
4
).
Note to check for continuity in two directions by reversing the
polarities.
There should be continuity only in one direction.
Replace the rectifier assembly as necessary.
