TM-9-2350-311-20-1 Maintenance Manual for Volume 1 M109 Hull Download
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TM9-2350-311-20-1 SECTION I. INTRODUCTION l-1 GENERAL STE/ICE-R, a testing system for internal combustion engines, provides measurements on voltage, resistance, pressure perature, and speed to analyze the condition of an engine system. Refer to TM 9-4910-571-12&P for description of STE/lCE-R equipment and general operating instructions. STE/lCE-R will also provide a thorough preventive maintenance check on M109A2/M109A3 and M109A4/M109A5 engines as part of service upon receipt and as an annual check in the PMCS (para 2-15). SECTION Il. ENGINE TESTING I-2 GENERAL There are two different test methods involving the use of STE/lCE-R equipment. The PMCS test method uses STE/lCE- R to check the general condition of the howitzer engine. The STE/lCE-R engine troubleshooting method isolates a malfunction down to the defective part or assembly. I-3 PMCS TEST METHOD The PMCS test method consists of a pretest inspection and STE/lCE-R testing. a. Pretest inspections Before using STE/lCE-R to test the vehicles, perform the following pretest inspections: 1 Fan belts. Check for proper tension. Replace if cracked or frayed. 2 Ignition cables. Ensure they are securely connected and in good condition. 3 Oil level. Bring up to proper level if low (TM 9-2350-311-10). 4 Fuel level. Check that the fuel tank has enough fuel for testing (TM 9-2350-311-10). 5 Radiator. Bring up to proper level if low (TM 9-2350-311-10). 6 Battery. Replace the battery if the case is cracked or the terminal posts are damaged. Clean off all corrosion. Check that the battery connections to ground and to the starter motor are in good condition, securely connected, and clean. Check the electrolyte level. If low, bring up to proper level with distilled water (para 8- 28). I-2