Procedure 4
Figure 105 (Sheet 1)
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Procedure 4
Figure 105 (Sheet 2)
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M50604
A 737-300/400/500MAINTENANCE MANUAL
PROCEDURE 5
NOT OK - Do a check for 28V DC power at pin 6 of the electrical connector for the control switch for the applicable boost pump on the P5 fuel system module.
NO. 2 FWD CTR L, FUEL CONT NO. 1 FWD NOT OK - Do a check for a bad 28V DC circuit breaker, FUEL CONT NO. 1 AFT NO. 2 AFT CTR R. Replace a bad circuit breaker if you find one.
OK - Replace the control switch for the applicable boost pump.
Procedure 5
Figure 106
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PROCEDURE 6
PROCEDURE 7
Procedure 6/Procedure 7
Figure 107
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5. Put the Airplane Back to Its Usual Condition
____________________________________________
A. Procedure
WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO REMOVE
_______ THE LE FLAP SAFETY LOCKS. THE LE FLAPS CAN MOVE QUICKLY IF YOU DO NOT REMOVE THE SAFETY LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(1) Remove the flap locks from the leading edge flaps
(AMM 27-81-00/201).
WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE LE AND TE
_______ FLAPS AND FLAP DRIVE MECHANISMS BEFORE YOU MOVE THE FLAPS. THE FLAPS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(2)
Retract the leading edge flaps (AMM 27-81-00/201).
(3)
Remove the electrical power if it is not necessary for other tasks (AMM 24-22-00/201).
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A
737-300/400/500MAINTENANCE MANUAL
ENGINE FUEL FEED SYSTEM - MAINTENANCE PRACTICES
_______________________________________________
1. General_______
A. This procedure has these tasks:
(1)
The test for engine performance deterioration
(2)
The vacuum test.
(3)
Check valve leakage troubleshooting
B. Specified fuel quantities are necessary to do the engine performance test, but no special equipment is necessary. It is necessary to have empty fuel tanks and some special equipment to do the vacuum test.
TASK 28-22-00-712-002
2. Engine Performance Deterioration Test_____________________________________
A. References
(1)
AMM 28-22-51/401, Fuel Boost Pump Removal Valve
