SELVA MARINE Kingfish 25, Service Manual

Page: 354 / 398

9-64
9
2. Measure the commutator diameter
a
.
Replace the armature assembly if below
specification.
3. Measure the commutator undercut
b
.
Replace the armature if below specifica-
tion.
4. Check the armature for continuity.
Replace the armature assembly if out of
specification.
5. Check the bearing. Replace the armature
assembly if damaged.
Checking the brush
1. Measure the length of each brush.
Replace if below specification.
Assembling the PTT motor
• Do not reuse an oil seal or O-rings,
always replace it with new one.
• Do not apply grease or oil to the com-
mutator of the armature.
1. Install a new oil seal 1 .
PTT motor commutator standard diameter:
16.3 mm (0.64 in)
Wear limit: 14.9 mm (0.59 in)
Commutator standard undercut
b
:
1.3 mm (0.05 in)
Wear limit: 0.6 mm (0.02 in)
a
b
b
c
d
e
Armature continuity:
c d e f
Motor brush standard length
a
:
7.5 mm (0.30 in)
Wear limit
b
: 5.1 mm (0.20 in)
Driver rod L3 2 : 90890-06652
Needle bearing attachment 3 :
90890-06617
b
a
1
2
3
PTT motor