CUMMINS N14 - Engine Vibration - Excessive

Engine Vibration - Excessive
Cause Corrections
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Engine Misfiring
OK
f
Refer to ‘‘Engine Runs Rough or
Misfires’’ Symptom Chart.
----------
Engine Idle Speed Too Low
OK
f
Check dataplate for correct idle speed and
adjust if necessary. Refer to Procedure 5-05
for PT engines. On CELECT™ engines, refer
to the N14 Operation and Maintenance
Manual, Bulletin No. 3666024.
----------
Fan is Loose, Damaged, or Unbalanced
OK
f
Check fan. Refer to Procedure 1-18.
----------
Engine Belt Driven Accessories Malfunction-
ing: Fan Hub, Alternator, Freon
Compressor, Hydraulic Pump, Air
Compressor
OK
f
Check for interference. Loosen belt to
isolate component from vibration.
----------
Engine Gear Direct Drive Accessories
Malfunctioning: Hydraulic Pump, Air
Compressor
OK
f
Isolate accessory component to
eliminate vibrations.
----------
Engine Mounts or Mounting Brackets
Loose or Damaged
OK
f
Check engine mounting. Refer to Proce-
dure 9-02 and the equipment manufactur-
er’s specifications.
----------
Vibration Damper Loose or Damaged
OK
f
Check vibration damper. Refer to
Procedure 7-32.
----------
Driveline Components and/or Rear/
Front PTO Damaged
OK
f
Check driveline components. Refer to
equipment manufacturer’s
specifications.
(Continued)
Troubleshooting Symptoms Charts SectionT-Troubleshooting
N14Page T-66