TM-9-2320-280-10
TRUCK, UTILITY: M998 SERIES
OPERATOR’S MANUAL
JANUARY 1996
TM-9-2320-280-10 - Page 40 of 405
TM 9-2320-280-10
Table 1-4. Engine Data (6.2 L)
Type.
.................................................................................
6.2 liter diesel, naturally-aspirated, liquid-cooled
Cylinders .
.............................................................................................................................................
8(V)
Brake horsepower.
...........................................................................................
150 horsepower @ 3600 rpm
Idle speed (engine rpm).
.......................................................................................................
650 + 25 rpm
Operating speed (engine rpm) .
............................................................................................
1500-2300 rpm
Oil pressure at idle.
..............................................................................................................
15 psi (103 kPa)
Normal operating oil pressure.
...............................................................................
40-50 psi (276-345 kPa)
Table 1-5. Engine Data (6.5 L)
Type.
..................................................................................
6.5 liter diesel, naturally-aspirated, liquid-cooled
Cylinders .
...............................................................................................................................................
8(V)
Brake horsepower.
...........................................................................................
160 horsepower @ 3400 rpm
Idle speed (engine rpm).
...........................................................................................................
725 + 25 rpm
Operating speed (engine rpm) .
.............................................................................................
1500-2300 rpm
Oil pressure at idle.
.................................................................................................................
10 psi (69 kPa)
Normal operating oil pressure.
...............................................................................
40-50 psi (276-345 kPa)
Table 1-6. Cooling System Data
Surge tank cap pressure.
...................................................................................................
15 psi (103 kPa)
Thermostat:
Starts to open .
......................................................................................................................
190 °F (88 °C)
Fully open.
..........................................................................................................................
212 °F (100 °C)
Radiator.
..............................................................................................................................
Downflow type
Fan.
.....................................................................................................................
10 blade, 19 inch (48 cm)
Normal operating coolant temperature.
...................................................................
190 °-230 °F (88 °-110 °C)
1-25
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