1---3
1.3 UNIT SPECIFICATIONS
a. Unit Weight Approx.
1800 lb (816 kg) with fuel and batteries
b. Engine (Dry) --- with Accessories
421 lb (191 kg)
c. A---C Generator
225 lb (102 kg)
d. Fuel Tank Draw
Model 69GN15---114:
68 U.S. Gallons (257 liter)
Model 69GN15---124:
73 U.S. Gallons (276 liter)
1.4 ENGINE DATA
a. Bore/Stroke
CT4---114 (V1902):
3.35 in. (85 mm) /3.23 in. (82 mm)
b. Compression Ratio
CT4---114 (V1902):
21:1
c. Cooling System
Capacity:
10.6 U.S. quarts (10 liters)
(Refer to paragraph 4.3.1)
Type of Anti---Freeze:
Ethylene Glycol 5.3 quarts (5 liters)
Water 5.3 quarts (5 liters)
Use a low silicate anti---freeze meeting GM specifica-
tions GM 6038M or equal.
Water Temperature Safety Switch Setting:
Opens 230
¦
5
_
F (110
¦
3
_
C)
Resets 200
_
F (93
_
C) --- minimum
Thermostat:
Starts to Open 177 to 182
_
F (80 to 84
_
C)
Fully Open 203
_
F (95
_
C)
d. Cylinders (Number)
Four
e. Displacement
CT4---114 (V1902):
113.57 cu. in. (1.85 liters)
f. Firing Order
1---3---4---2
g. Fuel
Winter:
Diesel No. 1
Summer:
Diesel No. 2
h. Glow Plug Amperage
7.5 amps per plug at 12 vdc
i. Horsepower
CT4---114 (V1902):
24.3 hp @ 1800 rpm
j. Lubrication System
Oil Pressure:
40 to 60 psig (3.8 to 5.2 kg/cm
@
)
Oil Pressure Safety Switch Setting Closes:
15 psig (2.08 kg/cm
@
)
Capacity:
20 U.S. quarts (18.9 liters)
Time between Oil Changes:
First 400 Hours, thereafter every 1000 Hours
(maximum)
Oil Level Indicator:
Dipstick in oil pan
Lube Oil Specification:
Use a heavy duty lubricating oil conforming to
American Petroleum Institute (API) Service Classifica-
tion CD (DS).
Lube Oil Viscosity:
Outdoor Temperature
Fahrenheit
Centigrade
SAE
Below 32
_
0
_
C
10W or 10W30
32
_
to 77
_
F
0
_
to 25
_
C
20
Over 77
_
F
Over +25
_
C
30 or 15W40
1.5 ENGINE SCREW THREADS
All threads used on the engine are metric except the
oil drain plug which is American Standard Pipe Thread
(NPT).
1.6 ENGINE AIR SYSTEM
Clean air is supplied to the engine through the air
cleaner. (See Figure 1---3) The air is necessary for
complete combustion and scavenging of the exhaust
gases. As the engine piston goes through the intake
stroke, the piston draws clean fresh air down into the
cylinder for the compression and power strokes. As the
engine goes through its exhaust stroke, the upward
movement of the piston forces the hot exhaust gases out
of the cylinders through the exhaust valves and the
exhaust manifold. If the air filter is allowed to become
dirty, the operation of the engine would be impaired.
Blow---by gases from the diesel engine crankcase are
introduced in the air intake manifold through the
crankcase breather. Therefore, the filter must be kept
clean and air restriction reduced to a minimum. A dry
type air cleaner is used with this unit. Air passes through
the screen where dirt or dust in the air is removed before
it enters the engine. As the dust and dirt accumulate, the
filter should be changed periodically. If the filter is not
changed, it will be blocked so that it cannot effectively
remove the dirt and dust from the air passing over the
screens. The air cleaner is equipped with Vacuator
TM
Valve which continuously expel dust and moisture. On
cleaners equipped with dust cup, the cup is emptied as
dust accumulates.
1. Pre---cleaner
The illustration (See Figure 1---3) shows a fin which
gives high---speed rotation to the intake air, and sepa-
rates a large portion of the dust from the air by centrifugal
action. The plastic fin, the element, and the gasket are
vital parts of the cleaner and are designed into a single
replaceable assembly. This design feature assures contin-
ued high performance of the cleaner.
2. Ejected dust
The dust is swept through a slot in the baffle and
collected in the dust cup or Vacuator
TM
Valve body.
3. Duralife filter
The small portion of the dust remaining in the
pre---cleaned air is removed by the Duralife element. The
element is chemically---treated and oven---cured for
resistance to oil and water. Perforated steel supports the
element inside and out and, together with rigid metal end
caps, provides structural rigidity to this vital part of the
cleaner. The element can be cleaned for re---use by one of
several recommended processes. (Refer to paragraph
4.3.5.)
