Checking The Pt Motor - SELVA MARINE Pike 9,9 Service Manual

NOTE:
• Push the brushes apart, and then remove
the armature assembly.
• Do not remove the bearing from the arma-
ture assembly.
7. Remove the brush holder screws C,
brushes D, brush springs E, and oil seal
from the PT motor base 0.
C
D
E

Checking the PT motor

1. Check the commutator. Clean with 600-
grit sandpaper and compressed air if
dirty.
2. Measure the commutator
Replace the armature if below specifica-
tion.
6AU3K11
C
E
0
S6AG7125
7
S6AU7066
diameter.
S6AU7067
Motor commutator standard
diameter: 16.5 mm (0.65 in)
Wear limit: 15.5 mm (0.61 in)
3. Measure the commutator undercut a.
Replace the armature if below specifica-
tion.
Motor commutator standard
undercut a: 1.00 mm (0.039 in)
Wear limit: 0.50 mm (0.020 in)
4. Check the armature
Replace the armature if out of specifica-
tion.
b
Armature continuity
Checking point
Commutator segments b
Segment – Armature core c
Segment – Armature shaft d
5. Check the bearing. Replace the armature
if damaged.
PT motor
1
2
3
4
5
for continuity.
6
d
c
7
S6AG7087
8
Continuity
Yes
No
9
No
7-38