Assembling The Ptt Motor - SELVA MARINE Blue Whale 250 EFI Service Manual

BRKT
2. Measure the
Replace the armature if below specifica-
tion.
Motor commutator standard
diameter:
23.0 mm (0.91 in)
Wear limit: 22.0 mm (0.87 in)
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 if out of specifications.
7-29
Bracket unit
commutator diameter.
for continuity.
Armature continuity
Commutator segments b
Segment – Armature core c No continuity
Segment – Armature shaft d No continuity
5. Check the circuit breaker of brush holder
for continuity. Replace the PTT motor
base assembly if there is no continuity.
6. Measure the brush length. Replace if
below specification.
Motor brush standard length:
11.5 mm (0.45 in)
Wear limit e: 4.5 mm (0.18 in)
7. Check the motor base. Replace if
cracked or damaged.
8. Check the bearing and oil seal. Replace
if damaged or worn.

Assembling the PTT motor

1. Install the new oil seal 1 and bearing 2
into the motor base 3 as shown.
Continuity
6P23H11