Index Locomotives - books DIESEL LOCOMOTIVE OPERATING NO. 2315 for MODELS F9, FP9, FL9 - manual 1997 year
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TROUBLE SHOOTING
F9-3-657
5.
Restart engine.
6.
Check oil pressure (must be a
minimum of 6 psi at IDLE).
NOTE:
Do not repeatedly start
engine if the LOW OIL
button keeps shutting the
engine down.
ADDITIONAL SAFETY DEVICES
302
Ground
Relay
When
the
ground relay, Fig. 3-10, located on
the
cab
side
of
the
electrical
cabinet, trips open, the engine speed
and load will automatically be re-
duced to IDLE, or to STOP if the
throttle is in Run 5 or 6.
To correct: Isolate engine,
reset ground relay, start engine if
necessary and place engine "on the
line." If the ground relay continues
to trip, reset, and leave engine
isolated.
IF AN ENGINE MUST BE
ISOLATED
BECAUSE
OF
REPEATED WHEEL SLIP OR
GROUND RELAY ACTION, DO
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NOT ALLOW THAT UNIT TO REMAIN IN THE LOCOMOTIVE
CONSIST UNLESS IT IS CERTAIN THAT ALL WHEELS ARE
ROTATING FREELY.
303
"PC" Switch Open
The "PC" switch is an air operated electric
switch that is tripped open by any "penalty" or "emergency" air brake
application. When tripped, the White "PC" light at the engineman's
control station will flash on but the alarm bell will not ring. The
engine
speed and load are automatically re
duced equivalent to throttle position No. 1.
If the "PC" switch tripped
open with the throttle in Run 5 or 6, the engine would stop. To
automatically reset "PC" switch:
1. Close throttle to IDLE.
2.
Place automatic brake valve in LAP.
3.
Place foot on safety control foot pedal (if used).
4. Wait until application pipe builds up to normal pressure; listen
for exhaust or watch "PC" switch light.
If, after an emergency application, the
"PC" switch does not reset itself with
the automatic brake in LAP, move the
brake valve to RUNNING. The "PC"
switch is set when the light goes out.
5.
Reset train control (if used).
6.
Place automatic brake valve in
RUNNING.
304
Engine Overspeed
Trip If the
engine
speed
should
exceed
approximately 910 RPM an overspeed
device, Fig. 3-11, located on the front
end of the engine will trip and stop the
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engine by preventing the injectors from injecting fuel into the cylinders.
The alarm bell and Blue light will come on if the engine is stopped in
this manner while "on the line." The overspeed trip must be latched in
the SET position before the engine can be restarted.
305
Fuel Flow
For proper operation, a good flow of fuel (clear
and free of air bubbles) should be indicated by the fuel return sight
glass, Fig. 3-12, located on the sintered bronze filter assembly.
If fuel is not flowing
through return sight glass,
check
fuel
pump
motor.If
motor is stopped, check: (1)
in "lead" unit, the "Control"
switch on the engineman's
control panel MUST be ON,
and the 30-ampere control
fuse must be good, (2) "Fuel
Pump"
switch
on
engine
control panel must be "ON,"
(3)
10-ampere
fuel
pump
motor fuse and 80-ampere
control fuse must be good in
"troubled"
unit, (4) control
knife switch
and
main
battery switch must be closed,
and
(5)
for
loose
cable
connections to motor. If pump
is running but fuel is not
pumped,
check:
(1)
fuel
supply, (2) position of emergency fuel cutoff valve, (3) a suction leak in
piping, (4) clogged suction filter, (5) a slipping coupling at fuel pump.
306
Emergency Fuel Cutoff Valve
Pulling any one of the three
emergency fuel cutoff valve pull rings will shut off the fuel supply to
the fuel pump (one is located in the operating cab of each "A" unit or on
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the
engineroom
wall
at
the
governor end of the engine in each
"B" unit, and one on each side of
the locomotive near the fuel tank
filler cap).
The cutoff valve is located
on the underside of the fuel tank
on the left side of the locomotive.
Action of valve is as shown in Fig.
3-13. To reset, push in on the
valve
yoke
"push
rod"
extension which
can be reached
from
the
left
side of the unit.
Pushing in on
this rod as far
forward
as
possible
will
reopen the valve.
307
Control Air Pressure
For
satisfactory
operation of the pneumatically operated contactors
and switches used in the control circuit, the electrical
control air pressure gauge in the electrical cabinet
adjacent to distribution panel must indicate 90 ± 3 lbs.
The pressure regulator, Fig. 3-14, is located behind
the steps leading into the operating cab on the right
(engineman's) side of the locomotive. To raise or
lower the pressure, change the adjustment on top of
regulator. A drain cock is provided on the bottom of
the regulator for draining the moisture.
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CORRECTION OF DIFFICULTIES
308
If The Engine Goes To Idle
1.
Ground relay might be tripped.
2.
No voltage relay (NVR) might be open (Blue light will be ON).
3.
PC" switch might be tripped.
4. "Engine Run" switch on the engineman's control panel might be
OFF.
5.
15-ampere fuel pump fuse, in the "lead" unit may be burned out.
6. "Control" switch on the engineman's control panel might be OFF.
7.
Isolation switch might be in "START."
309 If The Engine Stops
1.
Throttle might be in STOP position.
2.
Low oil pressure button on the governor might be OUT.
3.
Engine overspeed device might have tripped.
4.
No voltage relay (NVR) might have opened with throttle in
RUN 5 or .
5.
Ground relay might have trippedwith the throttle in RUN 5 or 6.
6. "PC" switch might have tripped with the throttle in RUN 5 or 6.
7.
No fuelflowing through"fuel return sight glass." See Art. 305,
Fuel Flow, for possible causes of trouble.
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310 How To Start Engine
If the engine has been stopped for a
considerable period of time, the cylinders should be tested for fuel or
water accumulation before starting engine (see Art. 317).
1.
Place throttle in Idle and reverse lever in Neutral.
2.
Place isolation switch in the START position.
3.
In the electrical cabinet, on the distribution and low voltage
panels, see that all fuses are securely in place and that all knife
switches are closed.
4.
At the engineman's control panel, switch "ON" the "Control" and
"Engine Run" switches.
5.
Place "Fuel Pump" switch on engine control panel in "ON"
position.
6.
After allowing a few seconds for fuel to flow through return
sight glass, Fig. 3-12, solidly press the "START" button and
hold until the engine starts. If the engine fails to start after 15
seconds of rotation, check possible troubles listed under Art.
311-312 before again trying to start engine.
7.
After allowing time for the lube oil pressure to build up, place
isolation switch in the RUN position.
8.
Check ground relay.
311 If The Engine Does Not Rotate When "Start" Button Is Pressed
1.
"Control" switch on engineman's control panel and "Fuel Pump"
switch on engine control panel must be ON.
2.
Isolation switch must be in the START position.
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3. 400-ampere starting fuse, 30-ampere control fuse and 80-ampere
control fuse must be good. 4. Main battery switch and the
control knife switch in the electrical cabinet must be closed.
312 If The Engine Rotates But Does Not Start When "Start" Button
Is Pressed
1.
Low oil pressure button on the governor must be pressed IN.
2.
Engine overspeed trip must be "Set."
3. No fuel flowing through "Fuel return sight glass." See Art. 305,
Fuel Flow, for possible causes of trouble.
313
If The Engine Does Not Speed Up When Throttle Is Opened
1. "Control" and "Engine Run" switches on engineman's control
panel must be ON.
2. Isolation switch must not be tripped. 3. PC switch must not be
tripped.
4.
Ground relay must not be tripped.
5.
No Voltage Relay (NVR) must not be open.
6.
15-ampere fuel pump fuse must be good.
7. No fuel flowing through "Fuel return sight glass." See Art. 305,
Fuel Flow, for possible causes of trouble.
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314 Engine Speeds Up But Locomotive Does Not Move When
Throttle Is Opened
1.
Reverse lever must be in either forward or reverse position.
2.
Reverser drum switch must not be locked in neutral.
3. "Generator Field" switch on engineman's control panel must be
ON.
4.
There must be 90 pounds (± 3 lbs.) control air pressure.
5.
Selector lever must be in No. 1 position.
6.
Hand brakes and air brakes must be released.
7.
80 -ampere battery field fuse must be good.
315 Battery Ammeter Shows Continual Discharge, Fig. 3-15
1.
Battery charging contactor located in the electrical cabinet must
be closed.
2.
250
–
ampere
auxiliary
generator (battery charging) fuse
must be good.
3.
The "Auxiliary Generator
Field" fuse in the electrical cabinet
must be good.
4.
The
auxiliary
generator
knife
switch
in
the
electrical
cabinet must be closed.
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