Symptom Tree  t014   Printable Version This is symptom tree t014 Cause Correction Voltage regulator is malfunctioning Check the voltage regulator. Replace the voltage regulator, if necessary.…

Symptom Tree  t013   Printable Version This is symptom tree t013 Cause Correction Alternator belt is loose Check the alternator belt tension. Refer to Procedure 013-005.  …

Symptom Tree  t010   Printable Version This is symptom tree t010 Cause Correction Air system leaks Block the vehicle wheels and check the air system for leaks…

Symptom Tree  t009   Printable Version This is symptom tree t009 Cause Correction Air governor is malfunctioning or not set correctly Check the air governor for correct…

Symptom Tree  t008   Printable Version This is symptom tree t008 Cause Correction Air system leaks Block the vehicle wheels and check the air system for leaks…

Symptom Tree  t007   Printable Version This is symptom tree t007 Cause Correction Lubricating oil drain interval is excessive Verify the correct lubricating oil drain interval. Refer…

Symptom Tree  t006   Printable Version This is symptom tree t006 Cause Correction Carbon buildup is excessive in the air discharge line, check valve, or cylinder head…

Symptom Tree  t005   Printable Version This is symptom tree t005 Cause Correction Air system leaks Block the vehicle wheels and check the air system for leaks…

Symptom Tree  t004   Printable Version This is symptom tree t004 Cause Correction Air intake system restriction to air compressor is excessive Replace the air compressor air…

Table of Contents General Information General Information TOC Use the charts on the following pages of this section to aid in diagnosing specific engine symptoms.…