TM 5-3895-346-14
ENGINE OVERHAUL
ENGINE OPERATING CONDITIONS
ENGINE OPERATING CONDITIONS SPECIFICATIONS
2200 rpm
2500 rpm
2800 rpm
Lubrication System
Lubricating oil pressure (psi):
Normal ............................................................................................ 40-60
40-60
40-60
Minimum for safe operation ................................................................ 30
32
32
*Lubricating oil temperature
(degrees F) - max .......................................................................... 200-235
200-235
205-240
Air System
Air box pressure (inches mercury) -
min. at full load:
At zero exhaust back pressure........................................................... 3.7
4.8
6.1
At maximum exhaust back pressure .................................................. 5.4
8.0
9.3
Air inlet restriction (inches water) -
full load max.:
Dirty air cleaner - oil bath or dry type ................................................ 18.8
23.0
25.0
Clean air cleaner - oil bath or dry type
with precleaner ................................................................................. 12.0
14.0
16.0
Clean air cleaner - dry type
without precleaner ............................................................................. 7.4
8.7
10.0
Crankcase pressure (inches water) -
max ................................................................................................... 0.8
0.9
1.0
Crankcase pressure (inches water) -
max . ................................................................................................. 1.1
1.2
1.3
Exhaust back pressure (inches mercury)
max.:
Full load ............................................................................................... 3.0
†4.0
+4.0
No load ................................................................................................. 2.1
†2.7
++2.7
Fuel System
Fuel pressure at inlet manifold (psi):
Normal with 0.070 inch restriction .................................................... 45-70
45-70
45-70
Minimum ............................................................................................ 35
35
35
Fuel spill (gpm) - minimum at no-load:
0.070 inch restriction ......................................................................... 0.6
0.6
0.6
Pump suction at inlet (inches mercury) - max.:
Clean system..................................................................................... 6.0
6.0
6.0
Dirty system ..................................................................................... 12.0
12.0
12.0
Cooling System
Coolant temperature (degrees F.) - normal ....................................... 160-185
160-185
160-185
@Coolant temperature (degrees F.) - normal.................................... 170-195
170-195
170-195
Raw water pump:
Inlet restriction (inches mercury) - max. ............................................ †5.0
†5.0
5.0
Outlet pressure (psi) - max. ............................................................. †10.0
†10.0
10.0
Keel cooler pressure drop (psi):
Maximum through system ................................................................ †6.0
†6.0
6.0
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