CAUTION: MAKE SURE YOU REMOVE THE CLEARANCE PANEL BEFORE YOU CLOSE THE
_______ VALVE. DAMAGE TO THE WARNING SIGNAL FOR THE REMOVAL VALVE CAN OCCUR.
(2) If you are scheduled to install the removal valve for one of the FWD boost pumps, do these steps:
(a)
Extend the leading edge flaps (AMM 27-81-00/201).
(b)
Install the leading edge flap locks (AMM 27-81-00/201).
(c)
Remove the small clearance panel from the bottom wing skin at the location below the actuator handle on the removal valve.
S 654-029
WARNING: CAREFULLY DO ALL THE SAFETY PROCEDURES TO DEFUEL AND TO GO INTO
_______ THE FUEL TANKS. INJURY TO PERSONS AND DAMAGE TO EQUIPMENT CAN OCCUR IF YOU DO NOT FOLLOW THE SAFETY PROCEDURES.
(3)
Defuel the No. 1 tank and prepare to go into it (AMM 28-23-00/201, AMM 28-10-00/201).
S 014-004
(4)
Remove the access panel, No. 1, for the applicable tank (AMM 28-11-11/401).
S 034-006
(5)
Remove the bolt that attaches the pump inlet line to the clamp.
S 034-007
CAUTION:_______HOLD THE VALVE WHEN YOU REMOVE THE LAST BOLT. DAMAGE TO THE VALVE OPERATING SHAFT OR THE WING SKIN CAN OCCUR IF THE VALVE FALLS.
(6) Remove the valve mounting bolts.
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A
737-300/400/500MAINTENANCE MANUAL
S 014-009
(7)
Pull the pump inlet line sufficiently clear of the valve to let you remove the valve.
S 024-010
(8)
Pull the valve out in a straight line until the tongue is clear of the slot on the operating shaft.
S 024-011
(9)
Lift the valve up until it is clear.
TASK 28-22-51-404-012
3. Install Fuel Boost Pump Removal Valve_____________________________________
A. Consumable Materials
(1) B00316 Cleaning Solvent - Aliphatic Naphtha TT-N-95 (Ref 20-30-31)
B. References
(1)
AMM 27-81-00/201, Leading Edge Flap and Slat Control System
(2)
AMM 28-11-11/401, Wing Fuel Tank Access Panels
(3)
AMM 57-30-11/401, Boost Pump Access Door
C. Access
(1)
Location Zones
305 Left Fuel Tank
405 Right Fuel Tank
(2)
Access Panels
7201L Boost Pump Access Door
7202 Fuel Tank Access Door
7203L Boost Pump Access Door
7401R Boost Pump Access Door
7402 Fuel Tank Access Door
7403R Boost Pump Access Door
D. Procedure
S 164-013
(1) Clean the O-ring groove and the machined surfaces of the valve and the mating surfaces with the solvent.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
(2) S 164-030Dry the machined surfaces of the valve and the mating surfaces with a lintfree cloth.
(3) S 434-014Install the new O-ring into the grooves on the valve.
(4) S 414-015Hold the inlet line to prevent blockage with the valve.
(5) S 424-016Put the valve in the correct position with the tongue and the slot of the operating shaft engaged.
(6) S 414-017Put the inlet line flange against the valve (Fig. 401).
(7) S 434-018Install the mounting bolts on the removal valve but do not tighten them.
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