S 865-064

 (9)  
See that the test equipment POWER PHASE ON indicator lights for phases A, B, and C go off.

 S 865-065

 (10)
 Set the CTR R pump switch on the fuel management module, M154, to the OFF position.

 S 865-066

 (11)
 Set the LOAD switch on the test equipment to the OFF position.

 S 865-067

 (12)
 Open these circuit breakers and attach DO-NOT-CLOSE tags:

 (a)  
P180 DC Power Distribution Panel
 1) 180H18 FUEL OVRD/JTSN PMP CONT CTR R

 (b)  
P415 Power Distribution Center - Right
 1) 415M32 FUEL OVRD/JTSN PUMP CTR RIGHT

 S 865-069
 (13)
 Remove the connector, DM225, from the test equipment.

 J.
Test of the Main No. 3 Forward Pump, M227, Ground Fault Detector, M7868

 S 865-070
 (1)  Make sure that the main No. 3 OVRD FWD pump switch on the fuel management module, M154, is set to the OFF position.
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747-400 MAINTENANCE MANUAL
 (2)  S 865-071Make sure that L CTR and CTR R switches on M154 are set to the OFF position.
 (3)  S 865-073Remove the connector, DM227, from the main no. 3 forward override/jettison pump, M227.
 (4)  S 865-072Make sure that the LOAD switch on test equipment G28013 is in the OFF position.
 (5)  S 865-074Connect DM227 to test equipment G28013.
 (6)  S 865-075Remove the DO-NOT-CLOSE tags and close these circuit breakers: (a) P180 DC Power Distribution Panel 1) 180E3 FUEL OVRD/JTSN PUMP CONT FWD 2&3 (b) P414 Power Distribution Center - Left: 1) 414C5 FUEL OVRD/JTSN PUMP FWD 3
 (7)  S 865-077Set the main no. 3 OVRD FWD pump switch on module M154 to the ON position.
 (8)  S 715-078See that the test equipment POWER PHASE ON indicator lights for phases A, B and C come on.
 (9)  S 865-079Set the LOAD switch on the test equipment to the LOAD position.
 S 715-080

 (10)
 See that the test equipment POWER PHASE ON indicator lights for phases A, B, and C go off.

 S 865-081

 (11)
 Set the main no. 3 OVRD FWD pump switch on module M154 to the OFF position.

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747-400 MAINTENANCE MANUAL
 S 865-082
 (12)
 Set the LOAD switch on the test equipment to the OFF position.

 S 865-083

 (13)
 Open these circuit breakers and attach DO-NOT-CLOSE tags:

 (a)  
P180 DC Power Distribution Panel
 1) 180E3 FUEL OVRD/JTSN PUMP CONT FWD 2&3

 (b)  
P414 Power Distribution Center - Left
 1) 414C5 FUEL OVRD/JTSN PUMP FWD 3

 S 865-085
 (14)
 Remove the connector, DM227, from the test equipment.

 S 865-086

 (15)
 Connect DM227 to pump M227.

 K.
Test of the Main No. 3 Aft Pump, M226, Ground Fault Detector, M7866

 S 865-087
 (1)  
Make sure that the main no. 3 OVRD AFT pump switch on the fuel management module, M154, is set to the OFF position.

 S 865-088

 (2)  
Make sure that L CTR and CTR R switches on M154 are set to the OFF position.

 S 865-089

 (3)  
Remove the connector, DM226, from the main no. 3 aft
 override/jettison pump, M226.

 S 865-090

 (4)  
Make sure that the LOAD switch on test equipment G28013 is in the OFF position.

 (5)  
Connect DM227 to test equipment G28013.

 S 865-092

 (6)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:

 (a)  
P180 DC Power Distribution Panel 1) 180E18 FUEL OVRD/JTSN PUMP CONT AFT 2&3
　
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