LOWER
INBD MOUNTING
A
BOLT
FUEL BOOST PUMP (TYPICAL)
PUMP REMOVAL
VALVE HANDLE FWD INBD
WARNING FLAG
DRAIN CLEARANCE PANEL
VALVE
1
RIGHT WING BOOST PUMPS ARE SHOWN,
LEFT WING BOOST PUMPS ARE OPPOSITE  B
Fuel Boost Pump Location Figure 202
M10221
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 S 352-020
 (2)  If the bonding jumper is loose, rework the electical bond path (SWPM 20-20-00).
 F. Electrical Bonding Jumper Physical Inspection
 S 212-021
 CAUTION: DO NOT FLEX, BEND OR KINK THE BONDING JUMPERS MORE THAN IS
_______ NECESSARY. IF THE BONDING JUMPERS ARE MOVED TOO MUCH, IT CAN CAUSE THE LOSS OF TIN PLATING ON THE WIRE BRAID OF THE BONDING JUMPER.
 (1)  Feel along the length of the bonding jumper and visually inspect the bonding jumper to find deterioration.
 (a)  
If there are broken strands in the wire braid, then do the task: Electrical Bonding Jumpers in the Fuel System Replacement.

 (b)  
If the bonding jumper feels rough, do the task: Electrical Bonding Jumpers in the Fuel System Replacement.

 NOTE: This shows there is a loss of tin and possible
____ degradation of the copper in the wire braid.
 (c)  If the bonding jumper does not feel rough and there are no signs of flakes of tin or copper fraying of the wire braid, then the bonding jumper is satisfactory.
 TASK 28-00-00-962-022
 3. Electrical Bonding Jumpers in the Fuel System Replacement
_________________________________________________________
 A. References
 (1)  SWPM 20-20-00, Electrical Bonds and Grounds
 B. Access
 (1)  Location Zones
 221 Center Section Fuel Tank
 305 Left Fuel Tank
 405 Right Fuel Tank

 C. Replace the Electrical Bonding Jumper
 S 012-023
 (1)  Remove the bonding jumper.
 (a)  Keep all the parts necessary for the installation of the bonding jumper.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 S 422-024
 (2)  
For the bonding jumpers used to bond electrical equipment, follow the applicable installation procedure in the AMM.

 S 422-025

 (3)  
For the bonding jumpers used to bond mechanical equipment or tubing, install the new bonding jumper and hardware (SWPM 20-20-00).

 (a)  
Make sure the mating surface(s) are correctly prepared.

 (b)  
Make sure the bonding jumper installation gives adequate clearance from the structure, tubing or all fuel system parts.

 NOTE: This will prevent abrasion.
____
 S 282-026
 (4)  Do the "Electrical Integrity Check of the Fuel System Bond Path" procedure.
 D. Electrical Integrity Check of the Fuel System Bond Path
 NOTE: SWPM 20-20-00 defines the measurement processes necessary for
____ installation of electrical bonding hardware. The fuel system tubing and components often incorporate multiple electrical bonds in series between the component and the primary structure. The measurement of the tubing or component bond is a separate requirement.
 S 222-027
 (1)  
For bonding jumper hardware installations, do the resistance measurement for electrical integrity (SWPM 20-20-00).

 S 222-028

 (2)  
For the fuel system tubing or components, do the subsequent steps:

 (a)  
Measure the total resistance from the tubing or component, to the adjacent primary structure.
　
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