TM-9-2320-361-24-1 Field Maintenance Manual Volume 1 for M44A2 Series Trucks
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TM 9-2320-361-24-1 0016 00 0016 00-1 FIELD TROUBLESHOOTING 2-1/2 TON, 6X6, M44A2 SERIES TRUCKS (MULTIFUEL) INTRODUCTION TO SIMPLIFIED TEST EQUIPMENT FOR INTERNAL COMBUSTION ENGINE—REPROGRAMMABLE (STE/ICE-R) TROUBLESHOOTING This work package (WP) contains information that may be used with the STE/ICE-R to locate malfunctions that may occur in M44A2 series trucks. The STE/ICE-R test set is a tool to help the mechanic troubleshoot and diagnose malfunctions and quickly repair an inoperative system. The STE/ICE-R is used primarily with the vehicle electrical system. The STE/ICE-R is portable and operates on either a 12-volt or 24-volt vehicle battery or equivalent power source. The STE/ICE-R measures standard voltage, current, resistance, pressure, temperature, and speed. Special tests, such as compression balance tests and starter system evaluations, can be performed by the STE/ICE-R. The diagnostic tests performed by the STE/ICE-R are used during troubleshooting, during Preventive Maintenance Checks and Services (PMCS), or after replacing parts to isolate malfunctions, anticipate failures, and ensure proper repairs have been made. STE/ICE-R setup and internal checks must be performed prior to testing. Specific setup procedures are listed in WP 0017 00, Engine Go Chain Troubleshooting. TM 9-4910-571-12&P, Simplified Test Equipment for Internal Combustion Engines, describes the operation and organizational maintenance of the STE/ICE-R system. The manual contains detailed operating procedures for general and specific measurements and lists the diagnostic tests that can be performed. WP 0017 00, STE/ICE-R Go Chain Troubleshooting, and WP 0018 00, STE/ICE-R No-Go Chain Troubleshooting, also list the diagnostic tests that can be performed. These WPs contain flowcharts that systematically guide the mechanic through the diagnostic tests. The PMCS charts (WP 0023 00) contain a list of various problems that may occur during operation or inspection of the vehicle. When one of the malfunctions listed occurs, the mechanic proceeds to the associated STE/ICE-R chain index. The diagnostic tests listed in the TM and WPs cited above cannot cover all possible problems. If a particular malfunction is not covered, refer to the Electrical Troubleshooting System Index (WP 0011 00), and locate the troubleshooting procedure for the malfunctions observed. To obtain the maximum number of observed symptoms, ask the operator.