Armature Test For Ground - Mercury 30 Service Manual

ARMATURE TEST FOR GROUND

1. Set ohmmeter to (R x 1 scale). Place one lead of
ohmmeter on armature core (or shaft) and other
lead on commutator, as shown.
2. If meter indicates continuity, armature is
grounded and must be replaced.
CHECKING POSITIVE BRUSHES AND TERMI-
NALS
1. Connect ohmmeter (R x 1 scale) leads between
positive brushes.
2. Ohmmeter must indicate full continuity (zero re-
sistance). If resistance is indicated, check lead to
positive terminal solder connection. If connection
cannot be repaired, brushes must be replaced.
Refer to "BRUSH REPLACEMENT".
a
a - Positive Brushes
90-826148R2 MARCH 1997
TESTING NEGATIVE BRUSHES FOR GROUND
Set ohmmeter to (R x 1 scale). Place one lead of
ohmmeter on the negative brush and the other lead
on the end cap (bare metal). If the meter indicates NO
continuity, replace the negative brush. Repeat this
procedure on the other negative brush.
a
11675
a - Negative (-) Brushes
b - End Cap
11673
b
ELECTRICAL - 2B-15
11674