ENGINE START AND IGNITION SYSTEM VISUAL CHECK (Continued)

4-4.3 ENGINE START AND IGNITION SYSTEM VISUAL CHECK

4-4.4 ENGINE START AND IGNITION SYSTEM OPERATIONAL CHECK

TM-55-1520-240-T-1 CH-47D Heilcopter Manual
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TM 55-1520-240-T 4-4.3 ENGINE START AND IGNITION SYSTEM VISUAL CHECK (Continued) TASK RESULT 1. Check START panel (1). If switches (2 and 3) are loose or damaged, tighten or replace them as required. If either light (4) is damaged, replace it. 2. Check No. 1 engine start pilot valve (5). If valve (5) is loose or damaged, tighten or replace it as required. If wiring or connector to valve is damaged, repair or replace it as required. 3. Check No. 2 engine start pilot valve (6). If valve (6) is loose or damaged. tighten or replace it as required. If wiring or connector to valve is damaged, repair or replace it as required. 4. Check No. 1 engine (7). If ignition exciter (8) is damaged, replace it. If igni- tion coil and cable assembly (9) is damaged, re- place it. If any one of four spark plugs (10) is damaged, replace it. If start fuel solenoid valve (11 ) is damaged, replace it. If harness (1 2) to exciter (8) and valve ( 11) is damaged, replace it. 5. Check No. 2 engine (13). If ignition exciter (8) is damaged, replace it. If igni- tion coil and cable assembly (9) is damaged, re- place it. If any one of four spark plugs ( 10) is damaged, replace it. If start fuel solenoid valve (11 ) is damaged, replace it. If harness (12) to exciter (8) and valve (11 ) is damaged, replace it. FOLLOW-ON MAINTENANCE: TM 55-1520-240-23: Close Engine Access Covers. Close Engine Work Platforms 4-4.3 END OF TASK 4-55

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