(2)
Access Panel
315A Access Door
334GA Panel
344GA Panel
E. Procedure
S 866-007
(1)
Do this task to remove hydraulic power from systems No. 1, 2, 3 and
4: "Hydraulic System Depressurization" (Ref 29-11-00/201).
(2)
Open the access door 315A.
(3)
Open the panel 334GA.
(4)
Open the panel 344GA.
S 016-008
S 016-012
S 016-014
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A
747-400 MAINTENANCE MANUAL
S 216-009
(5) Examine each of the six bonding jumpers:
(a) Examine the terminals for changes in the color on the bonding jumper.
NOTE: These changes will occur when the terminals become
____
too hot.
(b)
Examine the joint for corrosion.
(c)
Examine the strands for signs of melted and broken strands of the bonding jumper.
(d)
Examine the bolts on the bonding jumper.
(e)
If it is necessary, tighten the bolts for the bonding jumpers.
S 766-010
(6) Do this task to measure the electrical resistance of the bonding jumper: "Electrical Bonding" (Ref 20-22-01/601)
NOTE: The electrical resistance of the bonding jumper must not
____
be more than .001 ohms.
S 966-011
(7) If the inspections given before are not satisfactory, do these tasks to replace the bonding jumpers:
(a)
Remove the bonding jumpers and the ground leads
(Ref 20-11-15/401)
(b)
Install the bonding jumpers and the ground leads
(Ref 20-11-15/401).
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A 747-400 MAINTENANCE MANUAL
BONDING
GROUND STUD
JUMPER
BRACKET
A
GROUND STUD
INBD
JUMPER TERMINAL
BONDING
JUMPER
BONDING
JUMPER
FWD
INBD
A-A
Left Stabilizer Pivot Hinge (Right Almost the Same) Figure 601
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747-400 MAINTENANCE MANUAL
HORIZONTAL STABILIZER PIVOT FITTINGS - REMOVAL/INSTALLATION
___________________________________________________________
1. General
_______
A. This procedure contains two tasks.
(1)
The first task is the instructions to remove the pivot pin.
(2)
The second task is the instructions to install the pivot pin.
B. The procedures for the pivot pins for the left and right sides are equivalent.
C. Remove the pivot pins from one side at a time.
TASK 55-17-51-004-001
2. Pivot Pin Removal
_________________
A. Equipment
(1)
Dial Indicator and bracket - Commercially available
(2)
Horizontal Stabilizer Jacking Equipment,
Customer supplied.
(3)
Service Platform, Service Access Door -
B. References
(1)
AMM 06-09-05/201, Empennage Access Doors and Panels
(2)
AMM 27-41-02/601, Horizontal Stabilizer Free Play Check
C. Access
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