TM-9-2350-277-20-1 Unit Maintenance Manual Volume 1 M113A3 M577A3 M1064A3 M1068A3 M58 Download
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TM 9-2350-277-20-1 ENGINE CRANKS BUT WON’T START BELOW 40 (AIR BOX HEATER IS USED)—Continued 0022 00 5Y 1. Install fuel supply line to solenoid at restrictor block (WP 0206 00). 2. Remove air box heater harness plug (1) from solenoid (2). 3. Measure voltage between plug (1) pins with air box heater switch depressed. 4. Does multimeter read less than 17 volts? YES NO 5YN 1. Replace air box heater fuel supply solenoid (WP 0205 00). 2. Verify no faults found. 6Y 1. GO TO B4Y (PAGE 0022 00–6). AY 1. Turn AIRBOX HEATER and MASTER SWITCH to OFF. 2. Remove screw (1), washer (2), and bracket (3). 3. Remove air hose (4) from air pump elbow (5). 4. Is hose free from restriction and damage? YES NO AYN 1. Replace air pump to air box heater hose. 2. Verify no faults found. 0022 00-4