TM 5-2420-230-24-2
Section E - Engine and Component Identification
General Engine Specifications
B Series
Page E-7
Cooling System
Thermostat
Begins to open ........................................................................................................................ 81C [181F]
Fully open ............................................................................................................................... 95C [203F]
Pressure cap for 99C [210F] system ....................................................................................... 50 kPa [7 psi]
Pressure cap for 104C [220F] system .................................................................................. 103 kPa [15 psi]
Coolant capacity (engine only)
4 cylinder (non-aftercooled, charge air cooled)* ........................................................ 7.0 liters [7.4 U.S. Qts.]
4 cylinder (jacket water aftercooled) ......................................................................... 7.9 liters [8.4 U.S. Qts.]
6 cylinder (non-aftercooled, charge air cooled)* ........................................................ 9.0 liters [9.5 U.S. Qts.]
6 cylinder (jacket water aftercooled) ....................................................................... 9.9 liters [10.5 U.S. Qts.]
Intake Air and Exhaust System
Maximum allowable intake restriction at rated speed and load (with dirty air filter element)
Naturally Aspirated ................................................................................................. 50.8 cm H20 [20 in H20]
Turbocharged .......................................................................................................... 63.5 cm H20 [25 in H20]
Maximum turbocharger outlet restriction at rated speed and load .................................. 76.2 mm Hg [3 in Hg]
Maximum exhaust restriction at rated speed and load
Automotive with oxidation catalyst.............................................................................. 152.4 mm Hg [6 in Hg]
Automotive ............................................................................................................. 114.3 mm Hg [4.5 in Hg]
Industrial ................................................................................................................... 76.2 mm Hg [3 in Hg}
Fuel System
Fuel transfer pump maximum inlet restriction .................................................................. 100 mm Hg [4 in Hg]
Fuel transfer pump output pressure at rated speed
Distributor fuel injection pumps (maximum) ........................................................................... 70 kPa [10 psi]
Inline fuel injection pumps (minimum) ................................................................................. 172 kPa [25 psi]
Fuel filter restriction (maximum pressure drop across filters) ...................................................... 35 kPa [5 psi]
Fuel return restriction (maximum) ............................................................................... 518 mm Hg [20.4 in Hg]
* All 1991 and 1994 automotive engines with charge air cooling are designated as B3.9 or B5.9.
L-86
