(e)
For the right forward fuel boost pump,
6H17, R FWD FUEL BOOST PUMP
(f)
For the right fuel override pump,
6F20, R FUEL OVRD PUMP
S 034-024
(6)
Disconnect the electrical connector (13) from the motor impeller (11) (View A).
S 034-025
(7)
Loosen but do not remove the drain plug (15).
S 034-026
(8)
Remove the bonding clips (14).
S 034-126
(9)
Remove the two mounting screws (12), at the 1 O'clock and 7 O'clock positions, from the fuel boost pump or the fuel override pump.
S 434-127
(10)
Install a MS35275-250 screw at the 1 O'clock and 7 O'clock positions of the fuel boost pump or the fuel override pump.
S 034-027
(11)
Remove the mounting screws (12) that remain from the fuel boost pump or the fuel override pump.
(12)
Put the container below the motor impeller (11) to catch fuel.
S 494-028
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757 MAINTENANCE MANUAL
S 024-089
(13) Pull the motor impeller (11) out 1.5 inches (or to the MS35275-250 screws) from the housing (21) to let the removal check valve (26) close.
S 034-031
CAUTION:_______MAKE SURE FUEL DOES NOT CONTINUOUSLY DRAIN. IF FUEL CONTINUOUSLY DRAINS, THE REMOVAL CHECK VALVE (26) IS NOT CLOSED AND YOU MUST INSTALL THE MOTOR IMPELLER (11) AND DEFUEL THE FUEL TANK.
(14)
Remove the drain plug (15).
S 654-150
(15)
If fuel continuously drains, do the steps that follow:
(a)
Install the motor impeller (11).
(b)
Defuel the center fuel tank (AMM 28-26-00/201).
(c)
Remove the motor impeller (11).
S 034-128
(16) After the motor impeller (11) drains, remove the two MS35275-250 screws.
S 024-033
CAUTION:_______HAVE A REPLACEMENT MOTOR IMPELLER (11) AVAILABLE. WHEN YOU REMOVE THE MOTOR IMPELLER (11), FUEL CAN FALL IN DROPS INTO THE HOUSING (21) FROM ORIFICES IN THE JET PUMP PRESSURE LINE.
(17)
Remove the motor impeller (11) from the housing (21).
(a)
For the fuel boost pumps, use the fuel boost pump puller to remove the motor impeller (11).
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本文链接地址：757 AMM 飞机维护手册 燃油 CHAPTER 28 - FUEL 3(50)
