Checking The Brush - SELVA MARINE Grey Whale 200 EFI Service Manual

BRKT
3. Measure the commutator undercut a.
Replace the armature if below specifica-
tion.
Motor commutator standard
undercut a:
1.40 mm (0.055 in)
Wear limit: 0.90 mm (0.035 in)
4. Check the armature
Replace the armature if out of specifica-
tions.
Armature continuity
Commutator segments b
Segment – Armature core c No continuity
Segment – Armature shaft d No continuity

Checking the brush

1. Check the PTT motor base assembly for
continuity. Replace the PTT motor base
assembly if out of specification.
7-37
Bracket unit
for continuity.
Continuity
3
1
4
3
1
4
PTT motor base assembly continuity
Terminal 1–2
Terminal 3–4
Terminal 1–6 (Sb)
Terminal 2–6 (Sb)
Terminal 3–5 (Lg)
Terminal 4–5 (Lg)
For all terminal combinations
not listed above.
2. Measure the length of each brush.
Replace the brushes if below specifica-
tion.
Motor brush standard length:
11.5 mm (0.45 in)
Wear limit a: 4.5 mm (0.18 in)
5
Lg
Sb
6
2
5
Lg
2
6
Sb
S6AL7650
Continuity
No continuity
6AL3J11