R 1EFF : 301-399, 1 57-27-11Page 458 1 1 May 01/04 1 1 1CES 1
R (7) If the access panels 550CB(650CB) thru to 550DB(650DB) have been
R removed, do the steps that follow:
R (a) Refuel the applicable wing tank fully and keep the fuel tanker
R connected to the aircraft (Ref. TASK 12-11-28-650-003).
R (b) Put a container on the access platform below the applicable water
R drain valve 21QM (22QM). Use the PURGING TOOL (97A28002117002) to
R open the water drain valve (Ref. TASK 28-25-00-650-003).
R (c) On panel 800VU:
R - put the MODE SELECT switch to REFUEL
R - put the applicable wing tank REFUEL VALVES switch to the OPEN
R position
R - put the opposite wing tank REFUEL VALVES switch to the SHUT
R position
R - put the TEST switch to the HI LVL position and hold it there
R - make sure that the applicable HI LVL light goes out.
R (d) Set the fuel tanker to its lowest flow-rate and pressure. Make
R sure that the fuel flows into the vent surge tank and out of the
R water drain valve 21QM (22QM) (Ref. TASK 28-25-00-650-003).
R (e) On panel 800VU:
R - put the applicable wing tank REFUEL VALVES switch to the SHUT
R position
R - make sure that the fuel-flow from the water drain valve
R decreases and stops.
R (f) Close the water drain valve (Ref. TASK 28-25-00-650-003) and
R remove the PURGING TOOL.
R (g) On the panel 800VU:
R - put the applicable wing tank REFUEL VALVES switch to the OPEN
R position
R - make sure that the opposite wing tank REFUEL VALVES switch is
R in the SHUT position
R - hold the TEST switch in the HI LVL position.
R (h) Set the fuel tanker to its lowest flow rate and pressure. Let 150
R l (39.6254 USgal) of fuel flow into the vent surge tank.
R (i) On the panel 800VU:
R - put the applicable wing tank REFUEL VALVES switch to the SHUT
R position.
R (j) Stop the operation of the fuel tanker.
R 1EFF : 301-399, 1 57-27-11Page 459 1 1 May 01/04 1 1 1CES 1
(k) On the panel 800VU:
-release the TEST switch from the HI LVL position
-make sure that the applicable HI LVL light comes on
-put all of the REFUEL VALVES switches to the NORM and guarded position
-put the MODE SELECTOR switch to the OFF and guarded position. **ON A/C ALL
Subtask 57-27-11-790-051
G. Test
(1)
Do a status report (BITE) of the fuel quantity indicating system (Ref. TASK 28-42-00-740-001).
(2)
Do a functional (BITE) test of the fuel quantity sensors (Ref. TASK 28-46-00-740-001).
(3)
Examine the access panel you have installed for leaks.
5. Close-up
________
Subtask 57-27-11-960-051
A. Aircraft Configuration
(1) If you have done a major tank repair, refer to (Ref. MPD 731000I11) for the necessary maintenance procedure.
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
Subtask 57-27-11-410-051
B. Close Access
(1)
For panels 540NB(640NB):
(a)
Put the flap-track fairing support-bracket (12) in position on flap track No. 4.
(b)
Install and tighten the bolts (13) on the flap-track fairing support-bracket (12).
(4)
Remove the warning notice(s).
(5)
Remove the access platform(s).
(6)
Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(2) For panels 540NB(640NB) or 540PB(640PB): - install the forward and aft fixed fairings on flap track No. 4 (Ref. TASK 57-55-11-400-001).
R **ON A/C 301-399,
R Subtask 57-27-11-410-051-A
R B. Close Access
R R R (1) For panels 540NB(640NB) or 540PB(640PB): - install the forward and aft fixed fairings on flap track No. 4 (Ref. TASK 57-55-11-400-004).
R **ON A/C ALL
Subtask 57-27-11-860-063
C. Aircraft Configuration
(1) For the access panels 550BB(650BB) and 550DB(650DB): - defuel the applicable wing tank as necessary (Ref. TASK 28-25-00-650-001).
NOTE : While the wing tank pump operates, its related jet pump____ defuels the vent surge tank.
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