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 TM 55-1905-223-24-3
Table 1-1. Equipment Data - CONT
Characteristics
Reference Data
COOLING SYSTEM
Coolant capacity (engine only)
22 U.S. quarts (21 litres)
Standard modulating thermostat
range
180-200 (82-93 )
F
C
Maximum coolant cylinder block pressure
(pressure cap removed)
40 psi (275 kPa)
Maximum allowable top tank
temperature
212 (100 )
F
C
Minimum recommended top tank
temperature
158 (70 )
F
C
Minimum recommended pressure cap
(on remote tank)
7 psi (50 kPa)
EXHAUST SYSTEM
Maximum allowable back pressure
imposed by piping and silencer
3 in Hg (75 mm Hg)
Exhaust pipe size (normally
acceptable inside diameter)
5 in (127 mm)
FUEL SYSTEM
Engine idle speed
650 to 750 rpm
Maximum allowable restriction
to pump:
With clean filter
4 in Hg (100 mm Hg)
With dirty filter
8 in Hg (200 mm Hg)
Maximum allowable fuel return
line restriction
2.5 in Hg (63 mm Hg)
With check valves and/or overhead
tanks
6.5 in Hg (165 mm Hg)
Fuel check valve between fuel filter
and fuel pump:
minimum opening pressure
0.3 psi (2.1 kPa)
Fuel check valve between fuel pump
and cylinder head:
opening pressure
3 to 8 psi (21 to 55 kPa)
Fuel check valve in fuel drain line:
opening pressure
.25 to .50 psi (13 to 25 mm Hg)
Derate engine fuel rate for hot
weather
1% per 10above 100 (2% per
F
11 above 38 )
C
C
Coil resistance shutoff valve
24 volts (dc)
28-32 ohms
1-8
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