Figure 4-43. Alternator, removal.
Figure 4-42. Alternator cover, removal.
i. Installing Alternator.
Electric Starting Motors (fig. 4-44)
a. General. Electric starting motors are installed on
(1) Install alternator in reverse order of
the outboard engines of each propulsion unit. The two
(2) Install and adjust belt.
electric starting motors, model numbers 1108850 and
1108890, are identical except for direction of rotation.
Model number 1108850 has a clockwise rotation, viewing
from the drive end, and is installed on the outboard
engine of the starboard propulsion unit. Model number
a. Description. The all-electronic transistorized
1108890 has a counterclockwise rotation, viewing from
voltage regulator is an electronic device using no
the drive end, and is installed on the outboard engine of
mechanical contacts or relays. When the voltage supply
the port propulsion unit.
is below a predetermined amount the transistor
b. Servicing Starting Motor Brushes.
conducts, acting like a closed switch between the supply
(1) Disconnect negative lead at battery.
voltage and the field of the alternator. When the supply
(2) Remove and tag solenoid switch leads.
is above a predetermined amount the transistor is cut off,
(3) Remove solenoid switch and switch
acting like an open switch which removes the excitation
from the field, reducing alternator output.
(4) Remove starter cover band assembly.
(5) Inspect the brushes. The brushes must
be making good contact with the commutator. If the
(1) Remove and tag voltage regulator
brushes are worn down to 5/16 inch (original length 1/2
inch), replace brushes. Make sure that the pigtail leads
(2) Remove mounting nuts and remove
are tight in the brushes and the clips are fastened
securely to the leads.
(6) Install cover band assembly, solenoid
c. Installation. Install voltage regulator in reverse
switch, and leads in reverse order of removal.
order of removal.