Kohler COM7.5 Service Manual page 49

Commercial generator sets
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6.2 COM7.5 Reassembly
The following sections describe COM7.5 component
reinstallation and unit reassembly.
6.2.1
Alternator Reassembly
Follow the step-by-step procedures listed on the
following pages.
See Figure 6-6 for a diagram on
complete alternator reassembly.
Reassemble the Alternator
1. Apply antiseize thread compound to taper of
engine crank shaft to ease future removals. See
Figure 6-7.
2. Clean and reinstall the rotor and thrubolt. Remove
any magnetically held debris.
3. With a strap wrench around the rotor, torque the
thrubolt to 38 Nm (28 ft. lbs.). See Figure 6-8.
1
2
9
3
8
1. Thrubolt
2. Ball bearing
3. Stator
4. Rotor and fan assembly
5. Air inlet guard
6. Alternator adapter casting
7. End bracket casting
8. Intake duct
9. Bearing cover
Figure 6-6 Alternator (exploded view)
TP-6120 5/02
4
7
6
5
4. Place guide pins or headless bolts in the stator
mounting screw holes as a guide for reinstalling the
stator. Stator damage can occur if it is not installed
correctly.
Note: The magnets are very strong and cause the
stator to quickly snap over the magnetized
rotor.
5. Install the stator with the leads in the upper left
position Slide the stator over the guide pins until it is
fully installed on casting bosses. Be careful not to
pinch your fingers between the stator and adapter
when the stator snaps into place.
Figure 6-7 Apply Antiseize Compound
Figure 6-8 Torque Thrubolt
Section 6 Disassembly/Reassembly
39

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