MAINTENANCE OF THE HEMTT - OD1662 - LESSON 1/TASK 2
2.
Troubleshooting Approach
a.
General.
Troubleshooting is a step-by-step process of finding
the cause of maintenance problems with the M977 series FOL.
It is not possible to cover all troubles and deficiencies that may
occur in a system under the many conditions of operation.
If a
specific malfunction, test or inspection, and corrective action can
not be found, you should proceed to isolate the system in which the
trouble occurs and locate the defective component. Before taking any
action to troubleshoot or correct a possible malfunction, the rules
cited in paragraph 2b, below, should be followed.
b.
General Rules of Troubleshooting.
The following five rules
should be followed whenever troubleshooting, regardless of the
equipment. In other words, follow these rules whether troubleshooting
a tank, truck, weapon, radio, etc. These rules apply equally to any
and all troubleshooting.
(1) Read the Equipment Inspection and Maintenance Worksheet, DA Form
2404, and question the vehicle operator to obtain any information that
may assist in determining the cause of the maintenance problem.
(2) Never overlook the chance that the maintenance problem could be
of simple origin.
The problem could be corrected with minor
adjustment.
(3) Use all senses to observe and locate troubles.
(4) Use test instruments
or
gages
to
help
determine
and
isolate
(5) Always isolate the system where the malfunction occurs and then
locate the defective component.
c.
Preliminary Troubleshooting Procedures. The first step-performed
in any troubleshooting operation is to read DA Form 2404 and talk to
the operator.
Once this has been accomplished, the mechanic reads
through the troubleshooting procedures to determine the necessary
tools and equipment that will be needed to troubleshoot the
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