TM 55-1520-240-T10-1.4 ENGINE FUEL SHUTOFF AND CROSSFEED VALVESOPERATIONAL CHECK (Continued)TASKRESULTCHECK CIRCUIT BREAKERS1. Check that FUEL XFEED CONT circuitbreaker (1) is closed.2. Check that ENGINE NO. 1 FUELSHUTOFF circuit breaker (2) is closed.3. Check that ENGINE NO. 2 FUELSHUTOFF circuit breaker (3) is closed.CHECK ENGINE FUEL SHUTOFF VALVES4. Press and release No. 1 engine fuel valvelight (4).5 Press and release No. 2 engine fuel valvelight (5).6 Open ENGINE NO. 1 FUEL SHUTOFFcircuit breaker (2) and ENGINE NO. 2FUEL SHUTOFF circuit breaker (3).7 Set handles (6) on No 1 engine fuel valve(7) and No 2 engine fuel valve (8) to CLSD.8 Close ENGINE NO. 1 FUEL SHUTOFFcircuit breaker (2).9. Close ENGINE NO. 2 FUEL SHUTOFFcircuit breaker (3).Do not operate FIRE AGENTswitch while fire handles are out.Fire bottles will discharge intoIf XFEED CONT circuit breaker (1) is open, close it.If it opens again, go to task 10-1.5.If FUEL SHUTOFF circuit breaker (2) is open,close it. If it opens again, go to task 10-1.6.If FUEL SHUTOFF circuit breaker (3) is open,close it. If it opens again, go to task 10-1.6.Light (4) shall momentarily come on. If it does not,go to task 10-1.7.Light (5) shall momentarily come on. If it does not,go to task 10-1.8.If handle (6) cannot be moved to CLSD, replaceNo. 1 or No. 2 engine fuel valve as required.Handle (6) on No. 1 engine fuel valve (7) shallmove to OPEN. No. 1 engine fuel valve light (4)shall come on and remain on until handle IS atOPEN. If handle is not at OPEN or light comes onand stays on, go to task 10-1.9. If Iight did notcome on but handle is at OPEN, go to task 10-1.10. If light is on and handle is at OPEN, replaceNo. 1 engine fuel valve.Handle (6) on No. 2 engine fuel valve (8) shallmove to OPEN. No. 2 engine fuel valve light (5)shall come on and remain on until handle IS atOPEN. If handle is not at OPEN or light comes onand stays on, go to task 10-1.9. If light did notcome on but handle is at OPEN, go to task 10-1.10. If light is on and handle is at OPEN, replaceNo. 2 engine fuel valve.10-1.4TASKRESULT10. Pull out No. 1 ENGINE fire handle (9).Handle (6) on No. 1 engine fuel valve (7) shallmove to CLSD. No. 1 engine fuel valve light (4)shall come on and remain on until handle is atCLSD. If handle is not at CLSD or light (4) comeson and stays on, go to task 10-1.11. If light didnot come on but handle is at CLSD, go to task 10-1.10. If light is on and handle is at CLSD, replaceNo. 1 engine fuel valve.11. Pull out No. 2 ENGINE fire handle (10).Handle (6) on No. 2 engine fuel valve (8) shallmove to CLSD. No. 2 engine fuel valve light (5)shall come on and remain on until handle IS atCLSD. If handle IS not at CLSD or light comes onand stays on, go to task 10-1.11. If light (4) didnot come on but handle (6) is at CLSD, go to task10-1.10. If light iS on and handle is at CLSD, re-place No. 2 engine fuel valve.12. Open ENGINE NO. 1 FUEL SHUTOFFcircuit breaker (2) and ENGINE NO. 2FUEL SHUTOFF circuit breaker (3).13 Set handles (6) on No. 1 engine fuel valve(7) and No. 2 engine fuel valve (8) to OPEN.14 Close ENGINE NO. 1 FUEL SHUTOFFcircuit breaker (2).15. Close ENGINE NO. 2 FUEL SHUTOFFcircuit breaker (3).16. Push in No. 1 ENGINE fire handle (9).17. Push in No. 2 ENGINE fire handle (10).CHECK CROSSFEED VALVES18. Press and release left crossfeed fuelvalve light (11).Handle (6) on No. 1 engine fuel valve (7) shallmove to CLSD. No. 1 engine fuel valve Iight (4)shall come on and remain on until handle iS atCLSD. If not, replace No. 1 engine fuel valve.Handle (6) on No. 2 engine fuel valve (8) shallmove to CLSD. No. 2 engine fuel valve Iight (5)shall come on and remain on until handle IS atCLSD, If not, replace No. 2 engine fuel valveHandle (6) on No 1 engine fuel valve (7) shallmove to OPEN. If not, replace No. 1 ENGINE firepull control.Handle (6) on No. 2 engine fuel valve (8) shallmove to OPEN, If not, replace No. 2 ENGINE firepull control.Light (11) shall momentarily come on. If it doesnot, go to task 10-1.12.engines.GO TO NEXT PAGE10-7
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