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 TM 55-1905-219-14-4
ENGINE OPERATING CONDITIONS
V-71 N ENGINES (Metric)
1200 rpm
1800 rpm
2100 rpm
Lubricating oil pressure (kPa):
Normal. ................................ ................................ .................
241-379
344.8-482.7
344.8-482.7
Min. for safe operation ................................ ..........................
172.4
193.1
206.9
* Lubricating oil temperature (degrees C.):
Norma................................ ................................ ...................
93-113
93-113
93-113
AIR SYSTEM
Air box pressure (k Pa) - min. at full load:
At zero exhaust back pressure................................ ..............
3.7
12.8
16.9
At maximum full-load exhaust back pressure........................
7.8
21.6
27.7
Air inlet restriction (k Pa) - full-load speed, max:
Dirty air cleaner ................................ ................................ ...
3.9
6.2
6.2
Clean air cleaner ................................ ................................ ..
1.3
2.3
2.9
Crankcase pressure (k Pa) - max................................ ................
0.2
0.5
0.7
Exhaust back pressure (k Pa) - max:
Full load................................ ................................ ................
5.1
11.1
14.9
No load ................................ ................................ .................
3.4
7.1
10.1
FUEL SYSTEM
Fuel pressure at inlet manifold (k Pa):
Normal (.080" orifice) ................................ ...........................
310-483
310-483
310-483
Minimum .............................................. ................................
207
207
207
Fuel spill (l pm) - min. at no load: ..................... ..........................
1.9
2.1
2.1
Fuel pump suction at pump inlet (k Pa) -max:
Clean system ................................ ................................ .......
20.3
20.3
20.3
Dirty system ................................ ................................ .........
40.5
40.5
40.5
COOLING SYSTEM
Coolant temperature (degrees C.) - normal ................................
71-85
71-85
71-85
COMPRESSION
Compression pressure (k Pa)
Average - new engine at 600 rpm ...................... ..................
3895
Minimum at 600 rpm ................................... .........................
3551
*The lubricating oil temperature range is based on the temperature measurement in the oil
pan at the oil pump inlet.
When measuring the oil temperature at the cylinder block oil gallery, it will be approximately 5.5 lower.
C
3-279
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