8–41 62-11640
8.9.13 Generator
a. Preventive Maintenance and Operating Precau-
tions
WARNING
!
Be aware of HIGH VOLTAGE supplied at
the power plug or from the generator.
When performing service or maintenance
procedures: ensure any two way commu-
nication is disabled in accordance with
the manufacturer’s instruction, ensure
the Main Power Switch is in the OFF posi-
tion and, whenever practical, disconnect
the high voltage source, lockout/tagout
the receptacle and disconnect the nega-
tive battery connection.
WARNING
!
Do not direct water or steam into the gen-
erator openings. Do not allow any soap
and water solutions to enter the generator.
NOTE
Always test suspect generators with a meg-
ohmmeter. (Refer to Section 8.9.2.)
WARNING
!
Generators of this type should not be
“flashed.” Operation with external volt-
age source or momentary shorting of
leads will damage the generator and may
cause injury.
Costly repairs and down time can usually be prevented
by operating electrical equipment under conditions
which are compatible with those at which the equip-
ment was designed. Follow the instructions outlined
below to ensure maximum efficiency of the electrical
equipment.
b. Generator Replacement
Service procedures for replacement of the generator
(see Figure 8.41) involve removal of components as
required to swing the unidrive assembly out, from the
generator end, sufficient to allow removal of the gener-
ator from the back of the engine. The procedures that
follow cover the general steps required. Minor modifi-
cations of the procedures may be required depending
on the routing of wires within the unit being serviced.
Figure 8.37 Generator / UniDrive Assembly
Dowel Pins
Mica Shim
Stator / Rotor
Assembly
Rotor Bolts (6)
Fan Bolt
Fan
Generator Wires
One Washer
these locations
Flywheel
Locking
Tool
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