Engine Specifications (Cont’d.)
Fuel System
Maximum allowable restriction to fuel pump:
With clean fuel filter (STC engines) .......................................................................... 102 mm Hg [4 in. Hg]
With dirty fuel filter (STC engines)............................................................................ 203 mm Hg [8 in. Hg]
With clean fuel filter (CELECT™ engines) ......................................................................127 mm Hg [5 in Hg]
With dirty fuel filter (CELECT™ engines) ........................................................................228 mm Hg [9 in Hg]
Maximum allowable fuel return line restriction
Without check valves .............................................................................................. 65 mm Hg [2.5 in. Hg]
With check valves and/or overhead tanks.............................................................. 165 mm Hg [6.5 in. Hg]
Minimum fuel tank vent capability ................................................................................... 0.85 m
3
/h [30 ft
3
/hr]
Electrical System
Minimum Recommended Battery Capacity
Battery Size Ambient Temperatures
-18°C [0°F]
Cold
Cranking
Amperes
Reserve
Capacity *
Amperes
12 Volt 1800 640
24 Volt ** 900 320
* The number of plates within a given battery size determines reserve capacity. Reserve capacity determines
the length of time sustained cranking can occur.
** CCA ratings are based on two 12-volt batteries in series.
Batteries (Specific Gravity)
Specific Gravity
at 27°C [80°F] State of Charge
1.260 - 1.280 100%
1.230 - 1.250 75%
1.200 - 1.190 50%
1.170 - 1.190 25%
1.110 - 1.130 Discharged
Section E - Engine Identification Engine Specifications (Cont’d.)
N14 Page E-5
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