TM 5-4930-244-14 TABLE 2-1.  OPERATOR PREVENTATIVE MAINTENANCE CHECKS AND SERVICES FOR: Location Not Fully Item Item to Mission No. Interval Check/Service Procedure Capable if: 11 Before Alcohol Injector Check alcohol injector (1) fluid level. Alcohol level is low or Check for leaks.  (Figure 2-19.) alcohol is leaking. 12 Before Lube Supply Check hoses (3) for secure connections Hoses connections are Hoses and tighten if needed. not tight. 13 Before Unloader Valve Inspect unloader valve (10) for damage. Valve is damaged. (Figure 2-14.) 14 Before Lube Tank Check lube tank (4) for leaks or cracks. Tank is leaking or is (Figure 2-22.) cracked. Check all hoses (5) for cuts, tears, and Hoses are damaged. abrasions. 15 Before Safety Chain Inspect safety chain (18) for cracks or Chain cracked or corrosion.  (Figure 2-23.) corroded. 16 Before Brake & Tail Check light connection and switch on Damage exists. Lights towing vehicle. 17 During Shut off valve Inspect shut off valve (7) for leaks.  Valve leaking. (Figure 2-14.) 18 During Control Panel Inspect control panel (1) gauges for Gauges inoperable or correct operation and check for damage. damaged. 19 During Fuel Tank Check for contaminated fuel. Engine operates rough or erratic. 20 During Grease Valves Check grease valves (9) for leaks.   Grease valves leaking. (Figure 2-17.) 21 During Exhaust Hoses Check heater exhaust hoses and heat Hoses or ducts are & Heat Ducts ducts (4) for leaks.  (Figure 2-20.) leaking or damaged. 22 During Air Compressor Check air compressor pump (5) for leaks. Air compressor pump Pump (Figure 2-14.) leaking. 23 During Pressure Relief Inspect pressure relief valve (8) for leaks. Valve leaking. Valve 24 During Ball Valve Inspect ball valve (9) for leaks. Valve leaking. 25 During Unloader Valve Inspect unloader valve (10) for leaks. Valve leaking. 2-14