S 864-030
(20)
Move the flap control lever to a minimum of 5 unit detent to extend the LE flaps.
S 224-031
(21)
Do a check on the retract stop clearance:
(a)
Push a small rod through the hole of the retract stop bolt to extend the clearance indicator pin 0.15-0.20 inch (Section E-E, Fig. 402).
(b)
Put the flap control lever in the full UP detent then the 5 unit detent to operate the flaps.
(c)
Measure the height of the clearance indicator pin.
(d)
Make sure the clearance of the retract stops is not more than the specified limit (Section D-D, Fig. 402). 1) If the clearance is more than the specified limit, adjust
the retract stop bolt.
a) Move the washers until you get the correct clearance.
b) Push the indicator pin to the stop bolt head.
(e)
Install the lockwire on the coupling bolts after you get the correct clearance.
S 864-032
(22) Put the flap control lever in the full UP detent to retract the LE flaps.
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A
747-400 MAINTENANCE MANUAL
S 214-033
(23)
Make sure all the seals touch.
(a)
Adjust the seals if all the seals do not touch.
F.
Put the Airplane Back to Its Usual Condition
S 864-035
(1)
Do this task: "Hydraulic System Depressurization"
(AMM 29-11-00/201).
S 864-036
(2)
Do this task: "Pneumatic Power Removal" (AMM 36-00-00/201).
S 864-037
(3)
Do this task: "Electrical Power Removal" (AMM 24-22-00/201).
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747-400
MAINTENANCE MANUAL
KRUEGER FLAPS - INSPECTION/CHECK
________________________________
1. General
_______
A. This procedure contains the task to do the check of the krueger flaps.
B. The procedure does not include instructions for access, removal, or replacement of the component after inspection of worn areas. Refer to the Krueger Flaps - Removal/Installation for instructions to do these tasks.
TASK 27-81-01-206-001
2. Krueger Flaps Inspection/Check
______________________________
A. Standard Tools and Equipment
(1)
Micrometers, to measure internally and externally
B.
References
(1)
AMM 27-81-01/401, Krueger Flaps
(2)
AIPC 27-81-01, Fig. 1
(3)
AIPC 27-81-01, Fig. 5
(4)
AIPC 27-81-01, Fig. 10
(5)
SSM 27-81-01, SSM 27-81-02, SSM 27-81-03, SSM 27-81-04, SSM 27-81-05, SSM 27-81-06
(6)
WDM 27-51-21, WDM 27-51-22, WDM 27-81-11, WDM 27-81-12, WDM 27-81-21, WDM 27-81-22, WDM 27-81-31, WDM 27-81-32, WDM 27-81-41, WDM 27-81-42, WDM 27-81-81, WDM 27-81-82
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