Reassembly - Kohler 15CCO Service Manual

1
1. Drive Disk
2. Rotor
Figure 8-34. Removing the Armature Drive Disks

Reassembly

1. Secure the armature drive disks to the rotor
assembly with eight screws. Tighten the screws to
a torque of 28 ft. lbs. (338 in. lbs.) in the sequence
shown in Figure 8-35.
NOTE
Check the armature drive disks for flatness.
Replace the disks if they are uneven or bent. Disks
that are not flat will cause vibration and excessive
wear of the end bracket bearing.
8
1
6
1. Drive Disk
Figure 8-35. Tightening Sequence for Drive Disks
2. Position the rotor assembly on the engine flywheel.
Align holes in armature disks and flywheel and
TP-5606 6/02
2
3
3. Screw
3
5
2
7
4
1
secure the rotor assembly by installing eight
screws. Tighten these screws to a torque of 14 ft.
lbs. (168 in. lbs.) in the sequence shown in
Figure 8-35.
3. Slide the generator cooling fan over the rotor
assembly with the blades facing the flywheel. Coat
the threads of the eight mounting screws with
Locktiteâ #271. Then use the eight mounting
screws and four spacers to secure the cooling fan
to the flywheel.
4. Using a hoist, carefully reposition the stator over
the rotor assembly and onto the adapter lip. When
installed, the screened portion of the stator should
be over the generator cooling fan and the stator
leads should exit the top of the housing.
5. Position the end bracket over the open end of the
stator and use a rubber hammer to drive the rim of
the end bracket into the stator housing.
6. Install the overbolts to secure the end bracket and
stator. Tighten the overbolts to a torque of 25 ft. lbs.
(300 in. lbs.).
7. Use a hoist to raise the alternator end of the
generator. Remove the wood block(s) below the
flywheel housing. Then lower the generator back
onto the vibromounts.
8. Install the two bolts to secure the stator mounting
brackets to the vibromounts.
9. Install a new O-ring in the groove of the end
bracket.
10. Place the exciter armature on the end of the rotor
shaft. Install a flat washer and screw to secure the
exciter armature. Tighten the screw to a torque of
35 ft lbs.
11. Route the two main field leads through the exciter
armature. Connect these two leads to terminals
marked "+" and "--" on the diode assembly. Connect
the three leads of the exciter armature to the
terminals marked "A", "B", and "C" on the diode
assembly. Secure each lead using a 8-32 x 3/4
screw and a No. 8 lockwasher.
12. Slide the diode assembly onto the exciter
armature. Secure the diode assembly in place to
the exciter assembly using three spacers and
self-tapping screws.
13. Secure the exciter field to the end bracket using
four screws. Tighten these screws to a torque of 26
in. lbs.
14. Install the end bracket panel and secure it to the
end bracket with six self-tapping screws.
Disassembly/Reassembly 8-11