(2)
AMM 28-11-11/401, Wing Fuel Tank Access Panels
(3)
AMM 28-11-31/401, Center Tank Access Panel
(4)
AIPC 28-41-21-01
B. Access
(1) Location Zones
221 Center Fuel Tank
305 Left Wing Fuel Tank
405 Right Wing Fuel Tank
C. Procedure
S 864-021
WARNING: CAREFULLY DO ALL OF THE SAFETY PROCEDURES TO PREPARE TO GO INTO
_______ THE FUEL TANK. AN EXPLOSION, BAD INJURY TO PERSONS, AND DAMAGE TO EQUIPMENT CAN OCCUR.
(1)
Do this task: "Fuel Tank Purging (Air Ventilating)" for the applicable fuel tank (AMM 28-10-00/201).
S 864-003
(2)
Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a) P6 Panel
1) EP GND FUELING
2) QTY
S 014-004
(3)
Get access to the tank unit or the compensator unit through the access panel opening and the rib access openings (AMM 28-11-11/401 or AMM 28-11-31/401).
(4)
Disconnect the wires from the electrical terminals on the unit.
S 024-006
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A
737-300/400/500MAINTENANCE MANUAL
NOTE:
OUTER ELECTRODE
ELECTRICAL TERMINAL (TANK)DRIP LOOP
Figure 401
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A 737-300/400/500MAINTENANCE MANUAL
S 034-020
(5)
Loosen the wire clamp on the unit.
S 034-008
(6)
Remove the mounting screws.
S 024-007
CAUTION:_______MOVE THE TANK UNITS AND THE COMPENSATOR UNITS CAREFULLY. YOU CAN CAUSE DAMAGE TO THE PROPERTIES OF THE TANK UNITS AND THE COMPENSATOR UNIT.
(7) Remove the tank unit or compensator unit.
TASK 28-41-21-404-009
3. Install the Tank Unit or Compensator Unit (Fig. 401)_________________________________________
A. References
(1)
AMM 28-11-11/401, Wing Fuel Tank Access Panels
(2)
AMM 28-11-31/401, Center Tank Access Panel
(3)
AMM 28-41-00/501, Fuel Quantity Indicating System
(4)
AMM 28-41-02/501, Fuel Quantity Indicating System
(5)
AIPC 28-41-21-01
(6)
SWPM 20-10-11, Installation of Electrical Wires and Wire Harnesses
(7)
SWPM 20-10-12, Wire Harness Supports
(8)
SWPM 20-10-19, Wire Separation
B. Access
(1) Location Zones
221 Center Fuel Tank
305 Left Wing Fuel Tank
405 Right Wing Fuel Tank
C. Procedure
S 424-010
(1)
Put the tank unit or the compensator unit in its position.
S 434-018
(2)
Install the mounting screws.
S 434-019
(3)
Connect the wires to the electrical terminals on the unit (SWPM 28-10-11, SWPM 20-10-12, SWPM 20-10-19).
NOTE: Adjust wire slack to maintain a clearance of 0.5 inch
____ between the wire and components or structure. If 0.5 inch clearance is not possible, you must maintain a minimum clearance of 0.125 inch.
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A 737-300/400/500MAINTENANCE MANUAL
S 424-011
(4) Tighten the screws to these torque ranges:
HI Z (COAX) 15-16 pound-inches
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