(Ref. Fig. 401/TASK 28-42-15-991-001) Subtask 28-42-15-941-060
 A. Safety Precautions WARNING : OBEY THE SAFETY PROCEDURES WHEN YOU DO WORK IN A FUEL TANK.
_______
 (1) You must obey the fuel safety procedures (Ref. TASK 28-10-00-910-001) when you do work in a fuel tank.
 (2) Put the safety barriers in position. Subtask 28-42-15-650-053
 B. Fuel Configuration
 (1)
 Defuel the applicable fuel tank (Ref. TASK 28-25-00-650-001).

 (2)
 Drain the remaining fuel from the applicable fuel tank (Ref. TASK 28-25-00-650-003).

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 Wing Tank Probes - Location.
 Figure 401/TASK 28-42-15-991-001

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 C. Open, safety and tag this(these) circuit breaker(s):
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU FUEL/FQI/CHAN/1 1QT A13 121VU FUEL/FQI/CHANNEL/1 AND 2 8QT L26 121VU FUEL/FQI/CHAN/2 2QT M27
 Subtask 28-42-15-010-050
 D. Get Access
 (1)
 Put the access platform in position below the applicable access panel.

 (2)
 Remove the applicable access panel (Ref. TASK 28-10-00-910-002) and (Ref. TASK 57-27-11-000-001) or (Ref. TASK 57-27-11-000-002) and (Ref. TASK 28-12-46-000-001):

 -
FOR 21QT1, 22QT1, 23QT1, 24QT1, 25QT1, 26QT1
 remove 540AB

 -
FOR 27QT1, 28QT1
 remove 540BB

 -
FOR 29QT1
 remove 540DB

 -
FOR 30QT1
 remove 540FB

 -
FOR 31QT1
 remove 540GB

 -
FOR 32QT1
 remove 540HB

 -
FOR 33QT1
 remove 540LB

 -
FOR 34QT1
 remove 540QB

 -
FOR 21QT2, 22QT2, 23QT2, 24QT2, 25QT2, 26QT2
 remove 640AB

 -
FOR 27QT2, 28QT2
 remove 640BB

 -
FOR 29QT2
 remove 640DB

 -
FOR 30QT2
 remove 640FB

 -
FOR 31QT2
 remove 640GB

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 -
FOR 32QT2
 remove 640HB

 -
FOR 33QT2
 remove 640LB

 -
FOR 34QT2
 remove 640QB.

 4. Procedure
_________
 (Ref. Fig. 402/TASK 28-42-15-991-002) Subtask 28-42-15-020-057
 A. Removal of the Wing-Tank-Fuel-Quantity-Probe
 CAUTION : MAKE MATCH MARKS ON ALL THE ELECTRICAL WIRES BEFORE YOU

_______ DISCONNECT THEM. INCORRECT CONNECTION OF WIRES WILL CAUSE DAMAGE TO EQUIPMENT.
 (1)
 Cut the cable ties (3) and (7). Remove the cut cable ties (3) and (7) from the tank and discard.

 (2)
 Disconnect the electrical cables (10) from the probe (6) or (9) and put blanking caps on the electrical cables (10).

 NOTE : Probes 24QT1 and 24QT2 also have CIC connections.
____
 (3)
 For the probe (6):

 (a)
 Hold the probe (6) and remove the bolts (5) and (8) and the washers (4).

 (b)
 Remove the probe (6).

 (4)
 For the probe (9):

 (a)
 Remove the bolts (2).

 (b)
 Hold the probe (9) and remove the bolts (8) and the washers (4).

 (c)
 Remove the probe (9), then remove the support tube (1) from the probe (9).

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 Wing Tank Probes.
 Figure 402/TASK 28-42-15-991-002

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 Installation of the Fuel-Quantity-Probe (21QT1/2,22QT1/2,23QT1/2,24QT1/2,25QT1/ 2,26QT1/2,27QT1/2,28QT1/2,29QT1/2,30QT1/2,31QT1/2,32QT1/2,3 3QT1/2,34QT1/2) WARNING : MAKE SURE THAT THE FLIGHT CONTROL SAFETY-LOCKS AND THE WARNING
_______ NOTICES ARE IN POSITION.
 WARNING : MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING
　
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