Kohler EKOZD Series Service page 273

3. Disconnect fuel, cooling, and exhaust systems as
necessary to tilt generator set. Disconnect output
leads or load circuit cables at generator set.
4. Any cranes, hoists, or other lifting devices used in
the disassembly or reassembly procedure must be
rated for the weight of the generator set. Check
generator set nameplate or spec sheet for weight.
15.2 Disassembly Procedure
Note: For 35- 40 kW generator sets equipped with
4PX/4QX alternators, refer to Section 16 for
procedure to disassemble LED optic board,
activator board, and exciter.
1. Remove the junction box and/or control box panels
to access the internal components.
2. Disconnect all controller-to-engine and engine-to-
alternator harnesses and wiring in the junction box.
Be sure to mark the wiring as needed for
reconnection during reassembly.
3. Remove the remaining junction box and/or control
box components.
4. Remove the nuts and alternator guard from the
studs.
5. Remove the exciter field.
a. Remove the four bolts to remove the exciter
field. See Figure 15-3.
b. Remove the three bolts and spacers from the
rectifier module.
c. Disconnect the main field rotor leads from the
rectifier module positive/negative terminals.
Remove the exciter armature retaining bolt and
washer. See Figure 15-4.
d. Remove the exciter armature from the shaft,
guiding the rotor leads through the open
spaces in the exciter armature windings. See
Figure 15-4.
TP-6953 7/19
6. Attach a hoist hook to the engine lifting eye. See
Figure 15-5.
Note: The hoist capacity rating should be 500 kg
(one-half ton) or greater.
7. Remove the vibromount locknut, small washer,
bolt, and large washer from each vibromount. See
Figure 15-5.
8. Raise the alternator end and place a wood block
under the backplate. Lower the alternator until the
wood block supports the backplate.
Figure 15-5.
9. Locate and remove the four long studs and nuts
from the end bracket.
1
2
1. Bolts (4)
2. Exciter field
Figure 15-3 Exciter Field Removal
4
1. Exciter armature retaining bolt/washer
2. Rotor leads
3. Rectifier module
4. Exciter armature
Figure 15-4 Armature Removal
Section 15 Alternator Disassembly/Reassembly
1
2
3
See
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