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 ALL  ú ú 02 Page 420 ú Oct 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 (d)  Install and tighten a wire bundle clamp on each of the tank
 units and compensator or densitometer.
 (e)  Tighten all remaining wire bundle clamps in the outboard tank.
 NOTE:____ Do not tighten the clamps installed on the plastic
 stringer clips too much.  These clips have screw heads
 encapsulated in the clip.  If you tighten the wire
 bundle clamp too much it could break the screw head free
 from the clip.
 (f)  Install electrical seals in the tank divider for the
 inboard/outboard tank (AMM 51-31-01/201).

 S 434-153
 (31)
 If the wire bundle is used for the reserve tank, do these steps:

 (a)  
Tighten all remaining wire bundle clamps in the outboard tank.

 NOTE: Do not tighten the clamps installed on the plastic
____ stringer clips too much. These clips have screw heads encapsulated in the clip. If you tighten the wire bundle clamp too much it could break the screw head free from the clip.
 (b)  Install electrical seals in the tank divider for the inboard/outboard tank (AMM 51-31-01/201).
 S 944-056
 (32)
 Go out of the outboard tank.

 S 864-057

 (33)
 If the replaced wire bundle was for the outboard tank, do the "Put the Airplane Back to Its Usual Condition" procedure.

 S 864-058

 (34)
 If the replaced wire bundle is for the reserve tank, do the subsequent step.

 S 944-059

 (35)
 Go into the reserve tank to the tank divider.

 S 434-060

 (36)
 Put the wire bundle in its position in the reserve tank.

 (37)
 Loosely attach the wire bundle with clamps in its position.

 S 434-061
 NOTE: Do not tighten the clamps.
____
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 28-41-09
 ALL  ú ú 01 Page 421 ú Oct 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 S 434-062
 (38)
 Move the loose wire bundle to make sure it is equal along the bundle routing.

 S 434-154

 (39)
 Connect wire bundle terminals to the terminal block posts of applicable tank units and compensator.

 NOTE: The wires have identification markers and the terminals have
____ different dimensions to prevent errors in installations.
 (a)  Install and tighten the nuts on the fuel quantity tank units and fuel quantity compensator as follows (AMM 28-41-01/401, AMM 28-41-02/401):
 ~............................................ | HI-Z | 12-15 pound-inches | .............................................. | LO-Z | 25-35 pound-inches | .............................................. | SHIELD | 15-20 pound-inches | 2................…...........................1
 S 434-063
 (40)
 Install and tighten a wire bundle clamp on each of the tank units and compensator.

 S 434-155

 (41)
 Tighten all remaining wire bundle clamps in the reserve tank.

 NOTE: Do not tighten the clamps installed on the plastic
____ stringer clips too much. These clips have screw heads encapsulated in the clip. If you tighten the wire bundle clamp too much it could break the screw head free from the clip.
 S 394-064
 (42)
 Install an electrical seal in the reserve/outboard tank divider (AMM 51-31-01/201).

 (43)
 Go out of the reserve tank.

 S 944-065
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 28-41-09
 ALL  ú ú 01 Page 422 ú Oct 15/98
　
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