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Cummins N14 STC, Celect, Celect Plus – Service Manual 018-023   Engine Testing

Table of Contents

Specifications

Specifications

 TOC

Maintain the following limits during the engine test and run-in procedures:

Due to the variations in ratings of different engine models, refer to the specific Engine Data Sheet” for the specific engine model being tested.

Charge Air Cooler Restriction (Maximum):

Hg (Mercury) 152 mm Hg [6 in Hg]
Pounds Force 21 kPa [3 psi]

Intake Restriction (Maximum at Advertised Horsepower):

Clean air filter 254 mm H2O [10 in H2O]
Dirty air filter 635 mm H2O [25 in H2O]
Maximum Exhaust Back Pressure 75 mm Hg [3 in Hg]

Blowby (1) (Maximum at Advertised Horsepower):

New or rebuilt engines (Maximum)(less than 160,000 km [100,000 mi] or 3600 hours) 305 cm H2O [12 in H2O
Used engines (Maximum)(over 160,000 km [100,000 mi] or 3600 hours) 460 cm H2O [18 in H2O

Oil Pressure:

Low idle (minimum allowable) 69 kPa [10 psi]
At 1200 rpm or torque peak (minimum allowable) 207 kPa [30 psi]
At advertised rpm 276 to 345 kPa [40 to 50 psi]
Maximum Cylinder Block Coolant Pressure (Closed Thermostat) 275 kPa [40 psi]
Maximum Allowable Operating Temperature 100°C [212°F]
Maximum Allowable Fuel Inlet Temperature 71°C [160°F]

Fuel Inlet Maximum Restriction:

CELECT™ and CELECT™ Plus

Clean fuel filter 152 mm Hg [6 in Hg]
Dirty fuel filter 254 mm Hg [10 in Hg]

Fuel Inlet Maximum Restriction:

STC

Clean fuel filter 102 mm Hg [4 in Hg]
Dirty fuel filter 204 mm Hg [8 in Hg]

Fuel Drain Line Maximum Restriction:

CELECT™ and CELECT™ Plus 89 mm Hg [3.5 in Hg]
STC — Without check valves 63 mm Hg [2.5 in Hg]
STC — With check valves 165 mm Hg [6.5 in Hg]

(1) Blowby checking tool, Part Number 3822566, has a special 7.67 mm [0.302 in] orifice that must be used to make sure an accurate reading is obtained.
Last Modified:  29-May-2007
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