31. WILL NOT SHUT OFF USING KEY

29. EXCESSIVE EXHAUST SMOKE DURING OPERATION

33. SMOKY HEATER EXHAUST AFTER 5 MINUTES CONTINUOUS OPERATION

/.25ton/TM-9-2320-289-20 CUCV Series Trucks at Unit level Manual
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TM 9-2320-289-20 Table 2-3. Mechanical Troubleshooting (Con’t) MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION NOTE Knocking and rattling will result if air cleaner wingnut is loose. Step 1. Check tailpipe, muffler, and exhaust pipe for improper positioning and damage. Reposition and tighten mounting hardware. Replace any damaged components. (See paragraph 3-27) Step 2. Check engine mounts and insulators for looseness and damage. Tighten bolts securing mounts to frame or engine if loose. If there is any damage, notify your supervisor. Step 3. Check alternator belts for improper tension or damage. Adjust or replace if damaged. (See paragraph 4-2 or 4-3) Step 4. If knock is still evident, notify your supervisor. 31. WILL NOT SHUT OFF USING KEY NOTE Ground wire for ignition switch goes to top of parking brake bracket. If ground wire is broke, engine will not shut off if light switch is on. Step 1. With engine at idle, pinch flexible part of the fuel return line at fuel injector pump to stop engine. Notify your supervisor. EXHAUST SYSTEM 32. EXCESSIVE NOISE OR LEAKING EXHAUST GASES WARNING Before checking for looseness, damage, or restrictions, allow exhaust system to cool. Failure to follow this warning will result in serious burns. Step 1. Check tailpipe, muffler, damage, or restrictions. Tighten or replace 3-28) exhaust manifolds, and exhaust any damaged components. (See pipe for looseness, paragraphs 3-27 and Change 2 2-47

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