747-400 AMM 飞机维护手册 机身 FUSELAGE(51)

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 6)  Tighten all of the screws through the caps.
 7)  Lift the top and lower adjusting nuts (24) on the torque tube (7) until contact is made with the top and lower hinge arms.
 8)  Install the lockwire on the adjusting nuts (24) to the adjacent bolts on the caps.
 (h)  Adjust the guide links:.
 NOTE: Do these steps from in closed nose radome cavity.
____
 1)  Adjust the length of the guide links to attach it to the mating stud of the top and lower the attachment fitting at RBL 15.0.
 2) Install a lockwire to the guide links. 3) Attach the guide links to the nose radome and install the nuts and cotter pins (Fig. 201, Section C-C).
 (i)  
Adjust the bumper retainers (18, Fig. 201, Detail B) fully in the aft direction.

 (j)  
Open the nose radome sufficiently to permit the installation of the hold-open quick-release pin (13) through the mating hold-open fittings (14).

 (k)  
Adjust the shims (15) on the top and lower hold-open fitting until you can install the pin.

 (l)  
Adjust the bumper retainers (18) until the rubber bumper (17) touches the strike fittings (16) on hinge arms.

 (m)  
Remove the pins (13) and continue to adjust the bumper retainers in the forward direction for one completed turn.

 (n)  
Tighten the locknuts (19) on the rubber bumper and install a lockwire to the hole in the bumper mount fitting (20).

 S 222-015
 (6)  
Do a check of the bonding resistance on the nose radome:

 (a)  With the nose radome open, measure the bonding resistance between the bottom of the diverter strips, at the end which is adjacent to the bulkhead, and the conductor spring.

 (7)  
Close the nose radome (Ref. par. "Nose Radome Closing").

 S 762-017

 (8)  
With the nose radome closed, measure the bonding resistance between the diverter strips on the nose radome and body skin.

 S 412-016
 (a)  Make sure the maximum resistance is not more than 0.01 ohms (Section E-E) (Ref 20-22-01/601).
 S 142-018
 (9)  If the bonding resistance is not satisfactory, do these steps:
 (a)  Clean the mating surfaces between the conductor spring on the nose radome and the conductor channel on the bulkhead with fine abrasive paper.
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 (b) Do the check of the bonding resistance again.
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 TASK 53-52-01-302-022
 6.  Nose Radome - Approved Repairs______________________________
 A. Consumable Materials
 (1)  G00619 Scotchcal Tape No. 850 (clear), No. 853,
 or Permacel P95

 B. References
 (1)  SRM 53-10-72, Nose Radome
 C. Access
 (1)  Location Zone
 111 Radome

 D. Procedure
 S 352-021
 (1)  Repair the nose radome.
 (a)  
Do these steps if the damage is less than one square inch: 1) Put tape on the area that has damage. 2) Do the permanent repairs in the Structural Repair Manual

 (SRM 53-10-72) as soon as possible.

 (b)  
If the damage is more than one square inch, do the permanent repairs in the Structural Repair Manual (SRM 53-10-72).

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747-400 MAINTENANCE MANUAL
 NOSE RADOME - INSPECTION/CHECK
　
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