TM 9-2320-211-10-3
SAMPLE TROUBLESHOOTING PROCEDURE
7-1. GENERAL. This chapter gives a
sample troubleshooting procedure. The pur-
pose of the sample procedure is to help you see how the detailed troubleshooting pro-
cedures are used to find faults in a system.
7-2. SAMPLE PROCEDURE. The sample procedure given is
the fuel system trouble-
shooting procedure for the symptom, ENGINE IS HARD STARTING, OR CRANKS AND
DOES NOT START. This symptom is one you will have when you try to start your
truck and certain parts on the truck are not working correctly. In each numbered
box, instructions are given which tell you what to do, and how to do it. A large dot
is placed next to the "what to do" instructions, and small dots next the the "how to
do it" instructions.
a. Box number 1 gives general instructions on getting the truck ready before
you start to troubleshoot.
b. Box number 2 gives a fault isolation test instruction. In this case, you
are
told to see if the engine stop (ENG STOP) control handle is pushed in. After
you
do this simple test, you read the question at the bottom of box
STOP control handle is pulled out, the answer to the question
ENG
you
go to the next box.
c. Box number 3 gives you a corrective action. In this case, the fault is the
ENG STOP control handle being pulled out. The corrective action is what you do to
fix the fault, which is simply to push the handle back in. If the engine still doesn't
start after you do this, it could mean that there are other faults in the fuel system
besides the ENG STOP control handle. When this happens, go back to the beginning
of the procedure and do each step again until you find the other faults.
d. Sometimes the corrective actions given for a fault will tell you what to do
to fix the fault, but will not give you detailed instructions on how to fix it. Instead,
you will be told to refer to another volume in this manual for these instructions.
Box number 5 is an example of this. If the answer to the questions that all the
it means that the symptom cannot
fault isolation test instruction boxes ask is
be corrected at the operator level of maintenance. When this happens you are given
the instruction "Tell Organizational Maintenance."