M2/M3 BFV: TROUBLESHOOTING - OD1610 - LESSON 1/TASK 1
Additionally, when performing the inspection, operate mechanical parts (when
and where possible) to check for evidence of grinding, strange noises, and
extra play.
A word of caution concerning complacency. It is very easy to develop what
is commonly known as "tunnel vision."
Maintenance technicians must
continuously strive to look not only at the items to be inspected, but also
at additional items in the immediate area. In other words, when sent out to
an M2 to inspect the cable connections at the vehicle power distribution
box, also look for other things in the immediate area, such as loose wires,
missing cotter pins or nuts, or bent linkages that could not only have
caused the malfunction that you are working on, but also could cause
additional malfunctions. Remember the old cliche "an ounce of prevention is
worth a pound of cure"; the more that can be done to prevent, the less that
will have be done to cure.
4.
Specific Troubleshooting
As you know, the purpose of troubleshooting is to locate and isolate the
cause(s) of malfunctions. In paragraph 2 on page 2 of this task, we covered
troubleshooting in general.
In this and the succeeding paragraphs, the
specific troubleshooting procedures cited in TM 9-2350-252-20-1-1 will be
discussed.
Troubleshooting tasks always have a beginning and an end. You will use task
steps, test procedures, indexes, maintenance tasks, and other technical
manuals to troubleshoot.
a. Definitions of Troubleshooting Terms. Troubleshooting of the M2/M3
BFV uses terms that are not used in other types of tasks.
In this
paragraph, we will discuss these terms as they apply to troubleshooting the
M2/M3. There are three words basic to troubleshooting. The first word is
"fault." A fault is the part that is not operating correctly and is causing
the problem.
The second term is "symptom."
The symptom is the problem
reported to unit maintenance. The third term is "simplified test equipment-
M1/fighting vehicle system (STE-M1/FVS) vehicle test meter (VTM only)." The
STE-M1/FVS (VTM only) is a part of the STE-M1/FVS test equipment that is
used to troubleshoot at the unit level. It is used to make
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