Trouble Shooting Chart (Sheet 11 of 20)
Figure 4
TROUBLE, SYMPTOM
TEST, CHECK, AND/OR
AND CONDITION
PROBABLE CAUSE
REMEDY
GENERATOR AND EXCITATION CIRCUIT (CONTINUED)
1. No (or low) gen-
(4) Defective Amph-
(4) Disconnect voltage reg-
erator output volt-
enol connector at
ulator Amphenol connec-
age in all phases.
voltage regu-
tor (See TM-759 or OM-2020).
Generator operating
lator, or defec-
Using jumper leads
at 400 Hz in AUTOMATIC
tive wiring from
with clip and prod terminals,
mode.
regulator to
connect 12-V DC
(Cont’d)
exciter field.
to terminals “E” and “C”
in loose plug. Connect
NEGATIVE to terminal “E”
Connect POSITIVE lead to
“C” terminal (see Fig.
6). If the generator
will NOT produce a normal
voltage, replace or
repair Amphenol connector
and wiring between
voltage regulator and
exciter field as re-
quired.
(5) Defective voltage
(5) All components in the
regulator
excitation circuit except
the voltage regulator
have been tested in
steps (1) through (4)
above. This leaves only
the regulator as a cause
of trouble. Replace complete
voltage regulator
2. No (or low) output
A. Defective generator
A. Place AUTO-MANUAL control
voltage when operating
manual control excitation
switch (33, Fig. 1) in AUTO
in MANUAL mode
circuit.
position. If a normal voltage
is NOT produced, perform
checks as instructed in GEN-
ERATOR AND EXCITATION
CIRCUIT TROUBLE 1, above.
If a normal voltage is produced,
proceed to step “B” below.
OM-2029
September 30/89 Revised
3-1
Page 17
Summary of Contents for 140GT17K
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Page 122: ...Generator Set Figure 1 OM 2029 4 3 September 30 89 Revised Page 2 ...
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Page 128: ...Canopy Assembly Figure 2 OM 2029 4 3 September 30 89 Revised Page 4 ...
Page 130: ...Generator Set Without Canopy Figure 3 OM 2029 4 3 September 30 89 Revised Page 6 ...
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Page 134: ...Radiator and Cooling System Group Figure 4 OM 2029 4 3 September 30 89 Revised Page 10 ...
Page 136: ...Air Cleaner Assembly Figure 5 OM 2029 4 3 September 30 89 Revised Page 12 ...
Page 138: ...Electric Governor Kit Figure 6 OM 2029 4 3 September 30 89 Revised Page 14 ...
Page 140: ...Panel Engine Control Assembly Figure 7 OM 2029 4 3 September 30 89 Revised Page 16 ...
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Page 146: ...Stator Terminal Panel Assembly Figure 9 OM 2029 4 3 September 30 89 Revised Page 22 ...
Page 148: ...Power Module Panel Assembly Figure 10 OM 2029 4 3 September 30 89 Revised Page 24 ...
Page 150: ...Generator Group Figure 11 OM 2029 4 3 September 30 89 Revised Page 26 ...
Page 152: ...Fuel Line Assembly Figure 12 OM 2029 4 3 September 30 89 Revised Page 28 ...
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