M2/M3 BFV: HULL POWER DIST SYSTEM - OD1606 - LESSON 2/TASK 1
2.
When equipment malfunctions, it is not always obvious what is causing
the problem.
A description as general as "the fire suppression
system does not work" does not point directly to the specific
malfunctioning component so that the problem can be corrected.
Knowing how to isolate the faulty component is an essential part of
materiel maintenance.
The process of systematic isolation of
defective components by analyzing trouble symptoms and testing for
defective components so that corrective action can be taken is known
as troubleshooting.
Troubleshooting, in the general sense, is a
logical thought process.
When applied methodically, this thought
process leads to the identification of defective parts so that the
malfunctioning equipment can be repaired.
A general description of troubleshooting methods can be outlined in
four steps. First, it must be verified that the reported problem is
present in the vehicle.
The symptoms of the problem must be
identified, verified, and analyzed.
Second, the fault must be
isolated. This is done by applying the knowledge gained in step one
to identify the system in which the malfunction is occurring and then
to methodically test components in that system which could be causing
the problem.
Third, once the fault has been isolated, it will be
necessary to correct the fault by repairing, adjusting, or replacing
defective components.
Finally, it is necessary to verify that the
problem no longer exists and that there are no other problems.
a.
Symptom Analysis.
The first step in troubleshooting may be
called symptom analysis. It consists of getting as much information
as possible to help identify the specific nature of the symptoms
causing the malfunction and analyzing those symptoms.
The
information needed to analyze the trouble symptoms can be obtained by
reading the DA Form 2404, interviewing the vehicle crew, and test
operating the malfunctioning equipment. This requires looking up the
vehicle system where the problem is located in the task index
beginning on page 3-15 of TM 9-2350-252-20-1-1.
This index will
locate the troubleshooting procedure in the TM. In the case of the
fire suppression system, the troubleshooting procedure begins on page
3-638 of TM 9-2350-252-20-1-1.
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