(182.4-216.6 N.m). 6) Make sure the slot in the nut is aligned with the hole in the bolt. 7) If the slot in the nut does not align with hole in the bolt, do the assembly again and use adjustment washers.
NOTE: You can use a maximum of three adjustment washers
____ between the nut (24) and the washer (23) to align the hole for the cotter pin. It can be necessary to use a different nut.
8) Disassemble the nut, washers and bolt. 9) Keep the nut, washers and bolt together.
(b)
Apply a thin film of grease to the bolt (22).
(c)
If a slug is installed, push it out with the greased bolt (22). Make sure the clevis and lug stay aligned.
(d)
Install the attach bolt (22) and two washers (21 and 23).
1) Apply fay surface sealant between the washer (21) and the shoulder of the bolt (22), and between the washer (23) and the head of the bolt (22).
(e)
Install the nut (24).
1) Install the nut (24) with your hand.
a) Make sure the washer (21) is correctly seated against the shoulder of the bolt (22), and the washer (23) is correctly seated against the nut (24).
2) Tighten the nut to 1600-1900 pound-inches (182.4-216.6 N.m). a) Tighten the nut again after the sealant squeezes out. b) Do a check to make sure the torque value is correct. c) Make sure the notch in the nut for the cotter pin is
aligned with the hole in the bolt.
d) You can install a maximum of three adjustment washers, between the nut (24) and the washer (23), to align the hole for the cotter pin (25).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
54-51-02
ALL ú CONFIG 3 ú 10N Page 434 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
(f) Install the cotter pin (25).
NOTE: If you cannot install the cotter pin and you did the
____ check to find the correct number of adjustment washers, you can reduce the minimum torque to 600 pound-inches.
1) Do a check to make sure that the bolt, washers, nut, and cotter pin are installed correctly. 2) Apply sealant approximately 0.10 inch (2.54 mm) thick, to both ends of the cotter pin to prevent cotter pin movement.
(g) Make sure the joint is not clamped.
1) A minimum gap of 0.010 inch (0.255 mm) is required in the joint.
NOTE: The gap may be located between either washer
____ (21 or 23) and the applicable wing fitting.
(h)
Inject grease into grease fitting, if installed, until grease appears around edge of the pin. 1) Remove excess grease from around the pin.
(i)
Install the attach bolt retainer (22A). 1) Put the attach bolt retainer on the bracket. 2) Install the retainer to the bracket with the bolts,
washers, and nuts. 3) Make sure the clearance between the retainer and the head of the bolt is as shown on the illustration.
S 424-013-003
(3) Install the upper link forward fuse pin.
(a)
Apply a thin coat of grease to the fuse pin (26).
(b)
Apply antiseize compound (Never-Seez or equivalent) to the threads of the self-locking nut (33).
(c)
If a slug is installed, push it out with the greased pin (26). Make sure the clevis and lug stay aligned.
(d)
Install the washer (34) and nut (33) to the threaded end of the fuse pin (26).
(e)
Do a check of the self-locking torque of the nut (33).
1) If the self-locking torque is not 143-1000 pound-inches (16.3-113.8 N.m), replace the nut (33).
NOTE: The torque wrench must be installed on the nut
____ and not the head of the bolt.
(f)
Tighten the nut (33) to 1300-1500 pound-inches (148.2-171.0 N.m). 1) Do a check to make sure that the torque value is correct.
(g)
Install the end cap (27) with the bolt (28) and two washers (29 and 32).
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