Reassembly - Kohler 7.5EOR Service

9.2 Reassembly

1. Clamp the rotor in a soft-jaw vise. Install the drive
disc on the rotor with disc studs facing the rotor.
Tighten the eight bolts to 38 Nm (28 ft. lbs). See
Figure 9-9.
Note: 7.5 kW models: Apply antiseize compound
to the end of the rotor shaft.
2. Install the rotor/drive disc assembly on the engine
flywheel using six washers and bolts. Tighten the
bolts to 37 Nm (27 ft. lbs). See Figure 9-8.
3. Install the fan to the drive disc using four spacers,
washers, and locknuts.
Note: Install the fan with the flange side facing
away from the flywheel. Space the studs so
that they allow the fan installation in one
position only.
4. Inspect the O-ring in the end bracket bearing bore
and replace the O-ring if damaged. Use a sling to
support the stator assembly while installing the
stator over the rotor. Be careful not to damage the
rotor. See Figure 9-10.
1
2
1. Sling
2. O-ring
Figure 9-10 Stator Installation
5. Install the four overbolts (7.5 kW models: the two
long bolts in the lower holes). Check that the
alignment marks on the stator housing and locator
plate match. See Figure 9-11.
overbolts to 34 Nm (25 ft. lbs.).
58 Section 9 Generator Disassembly/Reassembly
1. Alignment marks
Figure 9-11 Alignment Marks
6. Use the hoist to raise the alternator end. Remove
the wood block from under the locator plate. Lower
the generator set and install a bolt, a large washer,
two small washers, and a locknut in each
vibromount. Tighten the mounting bolts.
7. Apply antiseize compound to the keyed end of the
rotor shaft.
8. Exciter-equipped models:
a. Bring the rotor leads through the bores in the
b. Use screws and lock washers to install the rotor
c. Install three spacers and bolts to mount the
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d. Install the exciter field using four bolts and
Tighten the
1
armature while installing the armature on the
shaft. Check the keyway of the shaft and the
key of the armature for damage. Install the
armature retaining bolt and washer. Torque the
armature retaining bolt to 38 Nm (28 ft. lbs.).
leads to the rectifier board at the positive (+)
and negative (--) terminals.
Note: Position the lock washers against the
rectifier board.
rectifier board to the armature.
washers. The field leads are at the top.
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TP-6073 4/06