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 0018 00 0018 00-29 SIMPLIFIED TEST EQUIPMENT FOR INTERNAL COMBUSTION ENGINE— REPROGRAMMABLE STE/ICE-R NO-GO CHAIN TROUBLESHOOTING (Contd) Table 2. STE/ICE-R No-Go Chain Test (Contd). GOVERNOR/POWER TEST FAULT ISOLATION (Contd) NG90 TK MODE RUN COMPRESSION UNBALANCE TEST: • Shut off fuel supply so engine will not start. • Dial 14 into TEST SELECT switches and press TEST. • Wait for prompting message GO to appear. 2 • When GO appears, crank engine. • Just after starting to crank, VTM display should change to four dashes, indicating VTM is accepting data. • Stop cranking when VTM displays OFF or E013. • Wait for a number to be displayed. • Stop cranking when VTM displays OFF or E013. • Does VTM display a number? • Does VTM display FAIL? • VTM displays E013. This may indicate discharged batteries or low cranking speed. Also, operator may have stopped cranking during test. Check and repeat test. • Proceed to next page. NO YES YES NO YES NO PROMPTING MESSAGE TEST NO. TEST 14 COMPRESSION UNBALANCE • Repeat compression unbalance test. • If FAIL message still appears, refer to Mechanical Systems Troubleshooting Index (WP 0007 00) to diagnose engine. • Does VTM display GO?