SUBTASK 53-52-00-020-008
(10) If an adjustment is necessary at clips where a bonding jumper is not installed, do these steps:
(a) Loosen the fuselage bulkhead attachment bolts on the applicable clips where binding
was noted and move the clips inboard.
1) Move the clips inboard just enough so that the nose radome no longer binds when it
is lowered into position.
(b) Lower the radome to the closed position.
(c) Apply compound, D50004, to the threads of the countersunk bolt and install the bolt.
(d) Tighten the countersunk bolt sufficiently to pull the clip into contact with the inner face of
the radome, and then remove the bolt.
(e) Open the radome carefully to prevent movement of the adjusted clip.
(f) Tighten the bolts that attach the clip to the fuselage bulkhead to 100 in-lb (11.3 N·m) -
125 in-lb (14.1 N·m).
SUBTASK 53-52-00-820-001
(11) If an adjustment is necessary at clips where a bonding jumper is installed, do these steps:
(a) Loosen the attachment bolts on the applicable clips where binding was noted and move
the clips inboard:
1) Move the clips inboard just enough so that the nose radome no longer binds when it
is lowered into position.
CAUTION
WHEN LOWERING RADOME, BULB SEAL MAY BECOME PINCHED
BETWEEN RADOME AND FUSELAGE SKIN CAUSING THE BULB SEAL
TO TEAR OR BE PULLED OUT OF POSITION. WHILE THE RADOME IS
BEING LOWERED, CAREFULLY WORK THE BULB SEAL INTO PROPER
POSITION USING A FLAT NON-METALLIC SPATULA.
(b) Lower the radome to the closed position.
(c) Apply compound, D50004, to the threads of the countersunk bolts and install them.
(d) Tighten the countersunk bolts sufficiently to put the clips into contact with the inner face
of the radome, and then remove the bolts.
(e) Open the radome carefully to prevent movement of the adjusted clips.
(f) Tighten the bolts that attach the clip to the fuselage bulkhead to 100 in-lb (11.3 N·m) -
125 in-lb (14.1 N·m).
(g) Do a check of the electrical resistance between the radome bonding jumper and the
radome clip.
(h) Make sure the electrical resistance is not greater than 0.01 ohm.
(i) If the electrical resistance is greater than 0.01 ohm, the contact surfaces of the clip,
shims, radome, bonding jumper and the fuselage bulkhead must be cleaned and treated
to meet the bonding requirement as follows:
1) Remove the three bolts that attach the clip to the radome and the fuselage
bulkhead.
2) Remove any shims there were installed.
3) Prepare the radome clip surfaces where the countersunk bolt is installed and the
radome bonding jumper surface as follows:
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
53-52-00
Page 405
D633A101-ILF Feb 15/2019
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
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