Kohler 15CCO Service Manual page 85

Voltage Regulator
PowerBoost IIIE
Black (+)
White (-)
Rotor
Slip
Rings
Single-Phase Generator
10-Amp
Fuse
DC
AM
-- +
12 Volt
Battery
Three-Phase Generator
Figure 7-2. Separate Excitation Connections
TP-5606 6/02
10 AMP
FUSE
D.C.
A.M.
- +
+
12 Volt
Battery
Brushes
TP-5414-6
To Controller
P5--12
P4 P4
P5--10
P6 P7
Exciter
Field
3. The approximate ammeter reading should be
battery voltage
(single-phase
(three-phase
resistances, see Specifications--Generator in
Section 1.
Example:
12 Volts (Battery Voltage)
4.7 Ohms (Rotor or Exciter
Field Resistance)
4. Start engine and check that ammeter reading
-
remains stable. An increasing meter reading
indicates a shorted rotor or exciter field. A
decreasing meter reading to zero or an unstable
reading suggests a running open (see Rotor or
Exciter Field heading later in this section). If
ammeter is stable proceed to Step 5.
5. Check for AC output across stator leads (see
Stator heading later in this section) and compare to
readings in Specifications--Generator of Section 1.
If readings vary considerably from specified
values, a faulty stator is likely (see Stator heading
later in this section).
6. If rotor and stator test good in prior steps, the
voltage regulator is probably defective. (Refer to
appropriate Voltage Regulator heading later in this
section.)
Stator
Specifications--Generator of Section 1 are based
on a battery voltage of 12 volts. Should actual
battery voltage vary (11-14 volts), resulting values
will also vary.
You'll need to hold the fuel rack in to maintain
engine operation.
divided by specified
generator) or
generator) resistance.
=
NOTE
output voltages
NOTE
Component Testing and Adjustment 7-3
rotor
exciter field
For
2.6 Amps
(Rotor Current)
found in