Index Locomotives - books DIESEL LOCOMOTIVE OPERATING NO. 2315 for MODELS F9, FP9, FL9 - manual 1997 year
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SYSTEMS
F9-4-657
401 Filling Cooling System
The system is filled either through the
filler pipe located on the roof of the locomotive above the water tank, or
through the filler pipe at the rear of the unit on either side. To fill the
system proceed as follows (steps 1 to 5 are necessary only when filling a
dry or nearly dry engine):
1.
Stop engine.
2.
Open "G" valve.
3.
Fill slowly until water runs out the "G” valve drain pipe.
4.
Close "G" valve.
5. Start engine and run several minutes. This will eliminate
any air pockets in the system.
6.
Shut down engine and open “G" valve.
7.
Add water until it runs out "G" valve drain pipe.
8.
Close 11G" valve.
If the cooling system of a hot engine has been 'drained, do not
refill immediately with cold water. If this is done, the sudden change in
temperature might crack or warp the cylinder liners and heads.
CAUTION:
1. Do not attempt to fill the cooling system through the
drain pipe located underneath the locomotive.
2. The system should not be filled above the maximum
water level indicated on the water tank, Fig. 4-3.
a.
To prevent freezing of radiators in winter, when
engine is shut down.
b.
To prevent loss of rust inhibitor when draining
back to "G" valve level.
402 Draining Cooling System
The entire cooling system can be
drained through the drain valve on the floor in front of the engine, with
the exception of the water pump on the right hand side of the engine. To
drain the right hand water pump, open the drain on the bottom of the
water pump housing.
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F9-4-657
SYSTEMS
403 Cab Heating
A cab heater is located on each side of the
cab.Hot water from the engine cooling water system passes through the
heaters, and motor driven fans provide air circulation. The flow of water
Cooling Water Tank
Fig. 4-3
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SYSTEMS
F9-4-657
to both heaters is controlled by a valve in the supply line, located over
the left-hand cab to engine room steps.This valve must be kept wide
open at all times in freezing weather. The output of each heater can be
varied by use of the cab heater switches. The switches have four
positions "OFF," 1, 2, 3, which provide three different motor speeds. If
engine in the lead unit is shut down in freezing weather, steam may be
admitted to the cab heaters on units equipped with steam generators.
LUBRICATING OIL SYSTEM
A schematic diagram of the lubricating oil system is shown in
Fig. 4-1. Oil under pressure is forced through the engine for lubrication
and piston cooling by the positive displacement combination piston
cooling and lubricating oil pump. After circulating through the engine,
the lubricating oil drains into the oil pan sump. The positive
displacement scavenging oil pump draws oil from the sump and forces it
through the filter and oil cooler. From the oil cooler, the oil is delivered
to the oil strainer assembly where it is ready for recirculation by the
combination piston cooling and lubricating oil pump. Since the
scavenging oil pump delivers a greater quantity of oil to the strainer
than is required by the lubricating oil and piston cooling pump, the
excess oil returns to the oil pan sump.
A relief valve is built into the filter in order to allow the passage
of oil to the strainer in excess of the capacity of the oil filter
elements.
A relief valve is mounted on the left side of the accessory end of
the engine. This valve is located in the discharge side of the
lubricating oil pump. The purpose of this valve is to limit the
maximum pressure of the lube oil entering the engine lube oil
system to approximately 60 pounds.
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F9-4-657
SYSTEMS
404 Oil Level
The oil level should be
checked, Fig. 4-4, with the engine hot and
running at idle speed. The dipstick located
on the left side of the engine should show
a level between "Low" and "Full," Fig. 4-
5.
When the engine is stopped, the
oil in the filter and cooler will drain back
into the oil pan.
If the oil level is
checked with the engine stopped, the
reading on the "dipstick" will be above
the "Full" mark.
Oil Dipstick
Fig. 4-5
405 Adding Oil To System
Oil
maybe
added
with
the
engine
running or stopped. When oil is
added to the system, it must be
poured through the opening having
the square cap on top of the strainer
housing, Fig. 4-6. Do not open the
adjacent round covers when the
engine is running as hot oil under
pressure will come out and possibly
cause personal injury.
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SYSTEMS
F9-4-657
406
Oil Pressure
A
lubricating
oil
pressure gauge is mounted on the engine
control panel, Fig. 4-7. Oil pressure at 835
RPM is normally 40 to 50 pounds. It
should not drop below 20 pounds. At idle
the pressure should be at least 6 pounds. In
the event of dangerously low oil pressure
the engines will automatically be stopped
by action of the governor low oil pressure
button.
FUEL OIL SYSTEM
A schematic diagram of the fuel oil system is shown in Fig. 4-8. Fuel is
drawn from the fuel tank through the suction filter by the motor driven
gear type pump. From the pump the fuel is forced consecutively through
the Ful-Flo filter and the sintered bronze filter. After passing through
the double element sintered bronze filter, the fuel flows to the
injectors.The excess fuel not used by the injectors returns to the fuel
tank through the return fuel sight glass, mounted on the sintered bronze
filter housing. An orifice restricts the flow of fuel into the glass and
causes a slight back pressure of fuel on the injectors. By maintaining a
slight back pressure on the injectors a positive supply of fuel for the
injectors is assured.
The fuel pump delivers more fuel to the engine than is burned in the
cylinders. The excess fuel circulated through the injectors is used for
cooling and lubricating the fine working parts of the injectors.
A 15-pound relief valve is connected across the inlet and outlet fuel
lines of the Ful-Flo filter. This relief valve by-passes fuel to the sintered
broanze filter if the Ful-Flo filter elements become clogged.
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SYSTEMS
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SYSTEMS
F94-657
407
Fuel Sight Glasses
Two sight glasses, Fig. 4-9, are mounted
on the sintered bronze filter housing.
For proper engine operation, a good flow of fuel (clear and free
of bubbles) should be indicated in the sight glass nearest the engine
called the "fuel return sight glass." With no fuel showing in the fuel
return sight glass, check to see if the fuel pump motor is running. If fuel
pump motor is running, and no fuel is flowing in return sight glass,
check (a) fuel supply in fuel tank, (b) position of emergency fuel cut-
off valve, (c) clogged suction filter, (d) suction leak in piping between
tank and pump, or (e) broken or slipping coupling at fuel pump.
If fuel pump motor is stopped, check (a) in "Lead" unit "Con-
trol" (and fuel pump) switch must be
ON, and 30-ampere Control Fuse
must be good, (b) "Fuel Pump"
switch on Engine Control Panel must
be ON, (c) 80-ampere
Control fuse and 10-ampere
Fuel Pump Motor fuse must be good,
(d) control knife switch and main
battery switch should be closed, and
(e) fuel pump motor cable connection
may be loose.
The sintered bronze filter is
also equipped with a 45-pound relief
valve and sight glass, Fig. 4-9. This
sight glass is referred to as the "45-
pound sight glass" and is normally
empty. When more than a trickle of
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F9-4-657
SYSTEMS
fuel is seen in the 45-pound sight glass, it indicates that the relief valve
is open. Fuel will pass through the 45-pound sight glass and relief valve
to by-pass the engine and return to the fuel tank in case the sintered
bronze filter becomes clogged.
408
Filling Fuel Tanks
The fuel tank can be filled from either
side of the locomotive. Direct reading sight level gauges located on
each side of the fuel tank adjoining the fuel fillers indicate level of fuel
oil starting at 4-1/2
"
from the top of the tank and should be observed
while filling the tank to prevent overflowing. The fuel should be fil-
tered through a reliable fuel filter before it enters the tank. DO NOT
HANDLE FUEL OIL NEAR AN OPEN FLAME.
409
Fuel Gauge
The basic fuel tank capacity is
1200 gallons. Full length sight level gauges are located on each side of
the front end of the fuel tank. A graduated plate shows the amount of
fuel in the tank as indicated by the fuel level in the glass.
410
Emergency Fuel Cutoff Valve
An "Emergency Fuel Cut-
off Valve," Fig. 4-10, is provided to cut off the fuel supply to the fuel
Emergency Fuel Cutoff Valve
Fig. 4-10
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