MAINTENANCE OF THE M113 PER CARRIER - OD1601 LESSON 2/TASK 2
b. Troubleshooting the Powerplant, Fuel, and Brake System - Unit Level of
Chapter 2, of TM 9-2300-257-20 contains troubleshooting information
and tests for locating and correcting troubles that may develop in the M113A1/A2.
This technical manual cannot cover all possible troubles and deficiencies that may
occur under the many conditions of operation. If a specific trouble, test, and/or
remedy are not covered within the TM, proceed to isolate the system in which the
trouble occurs and then locate the defective component.
Since this is a troubleshooting task, respective repair
procedures will not be discussed, but can be found in
technical manual TM 9-2300-257-20. Unless otherwise noted,
all references will be to this TM.
Use all the senses to observe and to locate troubles. Do not neglect use of any
test instruments such as an ohmmeter, voltmeter, ammeter, test lamp, hydrometer,
and pressure and vacuum gages that are available. Standard automotive theories and
principles of operation apply in troubleshooting the carrier.
crew to obtain maximum number of observed symptoms.
The greater the number of
symptoms of troubles that can be evaluated, the easier will be the isolation of the
The tests and remedies for malfunctions to the powerplant, fuel, and brake systems
are governed by the scope of the unit level of maintenance.
For this task, only
one example of a malfunction (symptom) will be covered for each of these M113
(1) Powerplant - Problem:
ENGINE DOES NOT DEVELOP FULL POWER.
(a) Find the name of the item that doesn't work.
For this example, the name of the item is the "Engine", which would be
found on TM page 2-41, of table 2-5.