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MAINTENANCE MANUAL
E. Procedure
S 944-014
WARNING: OBEY THE FUEL TANK ENTRY PRECAUTIONS (AMM 28-11-00/201)._______
FAILURE TO OBEY THE FUEL TANK ENTRY PRECAUTIONS COULD CAUSE
INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(1) Obey the fuel tank entry precautions (AMM 28-11-00/201).
S 214-018
(2) Make sure the two sides of the rear spar are clean at each bolt hole
location.
S 434-019
(3) Put a new seal (5) between the rear spar and the valve body (8).
S 424-015
(4) Put the valve body (8) in position between the APU fuel lines (7)
with the flange (1) on the top side of the valve body (8).
S 434-020
(5) From out of the fuel tank, put the washers (4) on the four
screws (3).
S 434-016
(6) Install the screws (3) through the rear spar into the valve
body (8).
ú
ú S 434-028
ú (7) Tighten the four screws (3) to 50-75 pound-inches (5.7-8.4
ú newton-meters).
S 434-017
(8) Install the lockwire on the screws (3).
S 224-021
(9) Make sure the bonding resistance between the valve body (8) and the
airplane structure is not more than 0.005 ohms (AMM 20-10-21/601).
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MAINTENANCE MANUAL
S 394-022
(10)
From out of the fuel tank, apply chromate type sealant (BMS 5-95) around all four screws (3) (AMM 51-31-01/201).
S 434-023
(11)
From in the fuel tank, use new O-rings (9) and connect the flexible full couplings (6) on the two sides of the valve body (8) (AMM 28-25-05/401).
S 414-024
(12)
Install the baffle doors, 134DZ, 134CZ, and 134BZ (AMM 06-41-00/201).
S 414-025
(13)
Install the center tank access door, 134AZ (AMM 28-11-02/401).
