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Copyright 2017 Cummins Inc.
15. Install the PMG assembly, if removed. Refer to
Permanent Magnet (PMG) Installation.
Perform the ‘Aligning Alternator with Engine”
procedures, later in this section, then return to
the following steps.
To assemble the control housing, skip to step
35.
To assemble the stator and rotor individually be-
gin here.
16. If removed, replace exciter rotor and rotating
rectifier assembly to main rotor shaft. Recon-
nect main rotor wire leads to positive and nega-
tive terminals of rectifier assembly.
17. If removed, install the drive disk spacer, drive
disc and pressure plate on the rotor shaft.
Install the cap screws and flat washers and
tighten to 607 ft-lb (822 Nm).
18. Using a hoist and sling to support the rotor,
align the holes in the drive disc with the corre-
sponding holes in the flywheel.
WARNING
To prevent personal injury, use
adequate lifting devices to support heavy
components. Keep hands and feet clear
while lifting.
19. Secure the rotor assembly drive disc to the fly-
wheel using appropriate capscrews and flat
washers. Tighten fasteners to 150−180 ft-lb
(204−245Nm) Do not allow rotor assembly to
hang on engine flywheel.
CAUTION
Drive disc damage can be
caused by allowing the rotor assembly to
hang on flywheel. Use adequate hoist and
sling to support the rotor assembly.
20. Reassemble engine adaptor endbracket to
stator frame if removed. Using an adequate lift-
ing device, carefully move the stator into posi-
tion over the rotor assembly, being careful not
to drag the windings on the rotor.
WARNING
To prevent personal injury, use
adequate lifting devices to support heavy
components. Keep hands and feet clear
while lifting.
CAUTION
Improper stator assembly rig-
ging 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 stator assembly alone, by hoisting
at lifting eyes only, presents the hazard of
load imbalance; allowing one end to drop
and other end to rise. Make sure the stator
is adequately hooked/strapped to maintain
level control of stator assembly while lifting
and moving.
21. Using a forklift, position a lifting bar of the forklift
(inside and inline with the alternator) under the
rotor shaft. Lift the rotor shaft slightly so that ro-
tor is not resting on inside of stator assembly.
22. Remove the hoist/sling support of the rotor as-
sembly. Align the holes of the engine adaptor
endbracket with the holes in the flywheel hous-
ing and install the capscrews and lock wash-
ers. Tighten fasteners to 95−105 ft-lb (129−142
Nm).
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