TM-9-2320-283-20-1
TRUCK TRACTOR, LINE HAUL, 50,000 GVWR, 6X4, M915A1
TECHNICAL MANUAL; ORGANIZATIONAL MAINTENANCE PART 1 OF 3
DECEMBER 1983
TM-9-2320-283-20-1 - Page 454 of 926
TM 9-2320-283-20-1
SECTION V.
STE/ICE TROUBLESHOOTING
2-12.
GENERAL.
a.
This SECTION is applicable only if STE/ICE (Simplified Test Equipment for Internal Combustion Engines) is
available.
This SECTION
contains information and tests which may be used with STE/ICE to locate malfunctions which
develop in the M915A1 truck.
The tests can be used during troubleshooting, PMCS, or prior to replacing parts to help
isolate malfunctions, anticipate failures, and to make sure that proper repairs have been made.
b.
STE/ICE is used primarily with the M915A1 truck’s electrical system. Tests can also be performed on certain
mechanical systems.
These tests cannot cover all
possible troubles which may occur.
If a
particular malfunction is not
covered, refer to paragraph 2-10, Troubleshooting Symptom Index, to locate the conventional troubleshooting
procedure
for
the malfunction observed.
To obtain the maximum number of observed symptoms of the malfunction, question the
truck’ s operator.
2-13.
HOW TO USE THE STE/ICE TEST INDEX.
The Troubleshooting Symptom Index (para 2-10) contains a list of various troubles which may occur during operation or
inspection of the M915A1 truck and which can be diagnosed with conventional test equipment.
If STE/ICE equipment can
also be used to determine the cause of the trouble, a STE/ICE GO or NO-GO chain Test Index number will
immediately
follow the listed malfunction.
When one of the STE/ICE Test Index Numbers appears, go to either paragraph 2-17 or 2-18
and do the test called for.
STE/ICE
tests
cannot be
done for all
the
malfunctions listed
in the Troubleshooting System
Index. Not all STE/ICE
diagnostic tests, where the primary fault is unknown, relate to the observed malfunctions listed in paragraph 2-10.
Refer
to
Test Index paragraphs 2-17 and
2-18 for additional tests which can only be performed with STE/ICE equipment.
2-14.
VEHICLE TEST MEIER TROUBLESHOOIING.
a.
The Vehicle
Test Meter
(VTM) is the
heart of
the STE/ICE system.
VTM Troubleshooting Procedures are
found in paragraphs 2-19 and 2-20.
Additional VTM troubleshooting can be found in TM 9-4910-571-12&P.
2-329
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