The General Support Troubleshooting Symptom Index, Table 4-1, lists the common malfunctions which may
occur. It refers you to the proper page for troubleshooting procedures.
This manual cannot list all possible malfunctions that may occur, all tests or inspections that must be performed,
or all corrective actions for each malfunction. If a malfunction is not listed, or is not remedied by corrective actions, notify
Prior to using troubleshooting trees, be sure you have performed all normal operational checks. Refer to the
electrical schematic (Figure FO-2) and hydraulic flow diagram (Figure FO-1) to assist in troubleshooting.
When troubleshooting a malfunction:
Question the direct support level maintenance personnel to obtain any information that might help determine
the cause of the malfunction. Before continuing, ensure that all applicable direct support level
troubleshooting has been performed.
Locate the symptom or symptoms in Table 4-1 that best describe the malfunction. If the appropriate
symptom is not listed, notify your supervisor.
Turn to the page where the troubleshooting procedures for that malfunction are described.
Perform each step in order until the malfunction is corrected. Do not perform any maintenance task unless
the table directs you to do so.
Refer to Table 4-1 for General Support troubleshooting procedures. Use the symptom index to quickly locate a particular
fault or malfunction. All related troubleshooting steps contained in Chapters 2 and 3 must be performed prior to attempting
to isolate a malfunction to a specific component addressed in this chapter.
Table 4-1. General Support Troubleshooting Symptom Index
Excessive Engine Noise
Transmission Malfunction, Low Torque Output
Transmission Will Not Engage or Disengage
Front Axle Does Not Operate Smoothly, Excessive Noise
Rear Axle Does Not Operate Smoothly, Excessive Noise