6-24
Copyright 2017 Cummins Inc.
ALTERNATOR REASSEMBLY
Alternator reassembly is the reverse of disassem-
bly procedure.
To assemble the stator and rotor at the same time,
continue with step 1. To assemble the stator and ro-
tor individually, skip to step 16.
1. Using an adequate lifting device, locate the al-
ternator assembly into position near the engine
flywheel housing. Align the holes of the rotor
drive discs with the holes of the engine fly-
wheel. Install the capscrews and flat washers
that secure the drive discs to the engine fly-
wheel, hand tighten.
WARNING
To prevent personal injury, use
adequate lifting devices to support heavy
components. Keep hands and feet clear
while lifting.
CAUTION
Improper alternator assembly
rigging and handling can result in damage
to stator and rotor assemblies. Lifting eyes
may not be at center-of-gravity position of
stator assembly. Therefore, lifting and mov-
ing the alternator by hoisting at lifting eyes
only, presents the hazard of load imbal-
ance; allowing one end to drop and other
end to rise. Make sure the alternator is ade-
quately hooked/strapped to maintain level
control of assembly while lifting and mov-
ing.
2. Align the holes of the engine adaptor endbrack-
et with the holes in the flywheel housing and
install the capscrews and lock washers. Tight-
en fasteners to 95−105 ft-lb (129−142 Nm).
3. Secure the rotor assembly to the flywheel.
Tighten fasteners to 150−180 ft-lb (204−245
Nm).
4. Connect the grounding strap to the flywheel
housing using a capscrew and EIT locking
washer; and tighten securely.
5. Install the mounting feet bracket fasteners; and
tighten securely.
If endbracket has been removed, continue with
step 6, otherwise skip to step 15.
6. Lift slightly on end of rotor shaft and install
wooden shims to hol rotor on center with stator.
7. If removed, install end bearing. Refer to Bear-
ing Inspection/Removal/Replacement proce-
dure in this section.
8. Install two threaded studs into end bearing car-
tridge to aid subsequent procedures. Position
the end bearing cartridge assembly close to
proper position for hole alignment with end-
bracket.
9. Assemble exciter stator, if removed, to inside of
endbracket. Tighten fasteners to 4.5 ft-lb (6
Nm) torque.
10. Install endbracket to the stator frame using the
proper capscrews and lock washers, but do not
tighten securely as yet.
11. Insert and start the threads of the bearing car-
tridge fasteners, and remove threaded align-
ment studs, through the endbracket into the
cartridge housing.
12. Lift slightly on endbracket and remove wooden
shims holding rotor on center with stator.
13. Securely tighten the endbracket fasteners.
14. Tighten the bearing cartridge fasteners to 4.5
ft-lb (6 Nm) torque.
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