13.2 Engine Operating Conditions
DETROIT DIESEL 53
6V,
53N ENGINES
(4-Vave Cylinder Head)
2200 rpm
2500 rpm
2800 rpm
Lubrication System
Lubricating oil pressure (psi):
Normal ...........................................................
40-60
40-60
40-60
Minimum for safe operation ............................
30.0
32.0
32.0
*Lubricating oil temperature (degr F.) - max ...................
200-235
200-235
200-235
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
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 .070" restriction .................................
45-70
45-70
45-70
Minimum ..............................................................
35
35
35
Fuel spill (gpm) - minimum at no-load:
.070" restriction.....................................................
0.6
0.6
0.6
Fuel pump suction at pump inlet
(inches mercury) - max.:
Clean system..................................................
6.0
6.0
6.0
Dirty system ...................................................
12.0
12.0
12.0
1972 Go Motors Corp.
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