TM 9-2350-277-34
ENGINE COOLANT HEATER DATA
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THIS WORK PACKAGE COVERS:
The engine coolant heater specifications are listed in the following table.
INITIAL SETUP:
Maintenance Level
Direct Support
INSPECTION-ACCEPTANCE AND REJECTION CRITERIA
EQUIPMENT DATA
Description
Characteristics
MetricEquivalents
Manufacturer
Stewart Warner
Model
939-J24
Part Number
11601698
Heat output:
Coolant:
High heat
15,000 Btu/hr
4.4 kW
Low heat
8,000 Btu/hr
2.3 kW
Operating temperature range(surrounding)
-65
to +100
F
-54
to +38
C
Electrical requirements:
Operating voltage range
20 to 28.5 V
Amperes draw – max above 70
F (21
C)
Start
12.0 amp
Run
1.5 amp
Amperes draw – max below 70
F (21
C)
Start
15.0 amp
Run
3.5 amp
Performance:
Fuel
grades DF-1, DF-2,
DFA, CIE, and JP-4
Fuel consumption:
High heat (normal)
0.026 ± 0.005 lb/min
0.013 ± 0.003 kg/min
Low heat (normal)
0.011 ± 0.003 lb/min
0.006 ± 0.002 kg/min
Fuel pressure (at fuel valve inlet)
3 to 15 psi
21 to 103 kPa
Fuel pump output pressure
3 to 6 psi
21 to 41 kPa
Temperature settings:
Overheat thermostat (opens)
245
F
118
C
Restriction thermostat setting
160
F
71
C
Dimensions and weight:
Height
10 in.
25 cm
Length
15-5/16 in.
39 cm
Width
6-3/16 in.
16 cm
Weight
15 lb
7 kg
Coolant pump:
Manufacturer
MP Pumps, Inc.
Model
12245
Part number
10946835
Electrical requirements:
Operating voltage range
20 to 28.5 V
Ampere draw
2.0 amp
Output
12 to 16 gpm
45 to 61 liters/min
Weight (maximum)
10 lb
5 kg
END OF TASK
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