Trouble Shooting Chart (Sheet 14 of 20)
Figure 4
TROUBLE, SYMPTOM
TEST, CHECK, AND/OR
AND CONDITION
PROBABLE CAUSE
REMEDY
N0. 1 LOAD CONTACTOR OPERATING CIRCUIT (CONTINUED)
2. Load contactor (K1)
A. 28.5-V DC is not
A. Check voltage at terminal Z
will close when
reaching plug interlock
on test receptacle. Voltage
control switch (20,
relay (K2) from
should be 28.5-V DC. If not,
Fig. 1) is held in
aircraft for the
voltage is not being supplied
momentary ON position.
following reasons:
from aircraft. Check
Opens immediately
causes as follows:
when switch
is released to center
(1) Generator to aircraft
(1) Inspect cable connector
ON position.
cable connector
plug thoroughly for damaged
defective
E and F terminals.
or not plugged
Be sure the plug is
into aircraft
fully mated with the
receptacle connector
aircraft receptacle connector
and making good
contact.
(2) Aircraft rejecting
(2) Check aircraft on board
power
electrical equipment and
controls
B. “Blown” fuse (F2)
B. Press the lens housing of
(1-1; 17, Fig. 8l) in
fault indicating lights. If
protective relay tray
lamps do not glow, replace
fuse (F2).
C. Defective plug-
C. Place test-bank switch (S2)
interlock relay (K2)
(34, Fig. 1) in ON position.
If load contactor will now
remain closed, replace the
plug-interlock relay (K2)
(Sect. 1-1; 1, Fig. 8) or
the complete protective
relay tray.
D. Small contacts in
D. Connect a jumper lead be-
load contactor (K1)
tween small terminal no. 1
defective
and no. 2 on the load contactor.
If load contactor
will now remain closed, replace
the complete load contactor
OM-2029
3-1
September 30/89 Revised
Page 20
Summary of Contents for 140GT17K
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Page 42: ...Output Terminal Panel Figure 11 OM 2029 1 1 September 30 89 Revised Page 24 ...
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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 ...
Page 142: ...Generator Control Box Assembly Figure 8 4 3 July 27 90 Page 18 OM 2029 ...
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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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