CUMMINS N14 - Engine Will Not Crank or Cranks Slowly (Air Starting Motor)

Engine Will Not Crank or Cranks Slowly (Air Starting Motor)
Cause Corrections
----------
Air Pressure Insufficient in Air Tank
OK
f
Increase pressure using external air supply.
----------
Engine Drive Units Engaged
OK
f
Disengage engine driven units. Refer to
the operation and maintenance manual.
----------
Oil Incorrect for Operation Conditions
OK
f
Change oil and filters. Use the type
recommended (15W-40). Check
operation.
----------
Oil Temperature Too Low
OK
f
Install oil pan heater or drain oil and
refill with warm oil.
----------
External Conditions Affecting Engine
Crankshaft Rotation
OK
f
Check engine for ease of crankshaft
rotation. Repair drive train damage.
----------
Hydraulic Lock in Cylinder
OK
f
Check intake or exhaust valve operation.
----------
Internal Engine Damage
OK
f
Use oil analysis and inspect filters to locate
area of probable damage. Refer to Procedure
2-02. Remove oil sump and/or front cover to
inspect engine for damage.
(Continued)
Troubleshooting Symptoms Charts SectionT-Troubleshooting
N14Page T-68