Removing The Ptt Motor; Disassembling The Ptt Motor; Checking The Armature (Ptt Motor) - Yamaha F30B 2018 Service Manual

Removing the PTT motor

Before removing the reservoir cap, make
sure that the trim and tilt ram is fully ex-
tended. Otherwise, fluid could be expelled
forcefully from the PTT unit due to internal
pressure.
1. Drain:
• PTT fluid
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a. Fully extend the trim and tilt ram.
b. Remove the reservoir cap "1", and then
drain the PTT fluid.
1
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Disassembling the PTT motor

1. Remove:
• Screw "1"
• Stator "2"
Secure the end of the armature shaft using
a pair of pliers, and then remove the arma-
ture along with the motor base assembly.
Otherwise, the armature could separate
from the motor base assembly due to the
magnetic force of the stator "2" and dam-
age the brushes.
1

Checking the armature (PTT motor)

1. Check:
• Commutator
Dirty  Clean using 600-grit sandpaper
and compressed air.
2. Measure:
• Commutator diameter "a"
Below specification  Replace the arma-
ture.
a
Standard commutator diameter
17.60 mm (0.6929 in) (F30A,
F30BET,
F40FET, F40HA)
Wear limit
16.60 mm (0.6535 in) (F30A,
F30BET,
F40FET, F40HA)
9-34
PTT motor
2
1
F30HA, F40A,
F30HA, F40A,