747-400
MAINTENANCE MANUAL

STABILIZING
STABILIZING
WING JACK
WING TIP JACK
IV - LEFT
VII - LEFT
V - RIGHT
VIII - RIGHT
JACKING POINTS
I
LEFT BODY
II
RIGHT BODY
III
TAIL (AFT FUSELAGE)
IV
LEFT WING
V
RIGHT WING
VI
NOSE
VII
LEFT OUTBD WING
VIII
RIGHT OUTBD WING
PRIMARY TAIL JACK POINT
PRIMARY BODY
III JACK POINTS
I - LEFT II - RIGHT
LOCATION (BODY STA AND BUTTOCK LINE)
STA 993.0 WBL 127.5 STA 993.0 WBL 127.5 STA 2596.0 RBL 30 STA 1516.0 WBL 583 STA 1516.0 WBL 583 STA 400.0 RBL 60 STA 1681.5 WBL 932.6 STA 1681.5 WBL 932.6
NOTE: RBL = RIGHT BUTTOCK LINE; WBL = WING BUTTOCK LINE
Jack Points Data Figure 201 (Sheet 1)
CONTROL CONSOLE (OPTIONAL) STABILIZING NOSE JACK POINT VI (JACK NOT SHOWN)
MAX STATIC
LOAD IN POUNDS (KG)
200,000 (90,700)
200,000 (90,700) 96,800 (43,900) 30,000 (13,600) 30,000 (13,600) 39,400 (17,800) 25,000 (11,300) 25,000 (11,300)
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 ALL  ú ú 01 Page 203 ú Jun 10/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
VIII  INTEGRAL JACK PAD
SEE  C  V  SEE  A 
TAIL JACK 
VI  II  III 
FWD 

I
AFT FUSELAGE INTEGRAL JACK PAD (III)
SEE D IV
A
SEE E
SEE B VII
LOWER WING PANEL
JACK ADAPTER 36MIT65B00141
FWD 30MIT65B00112 JACK ADAPTER FORWARD JACKFWD JACK
FORWARD BODY (NOSE) JACK ADAPTER (VI)
OUTBOARD WING JACK ADAPTER (VII AND VIII)
C
B
FLAP TRACK
INTEGRAL JACKING PAD
JACK ADAPTER 50MIT65B00112
FLAP TRACK
FAIRING
FWD  INTEGRAL FWD
JACK  JACK PAD
JACK REMOVED ACCESS PANEL
BODY INTEGRAL JACK PAD (I AND II) WING JACK ADAPTER (IV AND V) DE
Jacking Points Figure 201 (Sheet 2)
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 ALL  ú ú 01 Page 204 ú Feb 10/92
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 652-007
 CAUTION: DO NOT FILL INBOARD MAIN TANKS WHEN THE RESERVE, OUTBOARD MAIN
_______ AND CENTER WING FUEL TANKS ARE ALL FILLED AT THE SAME TIME. TO DO THIS WILL PUT TOO MUCH LOAD ON THE AIRPLANE JACK POINTS.
 (6)  Fuel or defuel the reserve and the outboard main and center wing fuel tanks for a leak tests (Ref 12-11-01/301).
 NOTE: You can do this in any order or combination but do not load
____ more than the maximum load limits of the primary and auxiliary jacks.
 This assumes the tanks are filled with fluid, such as Soltrol or equivalent, at 7 pounds per gallon (0.8 kg per liter) for a leak test.
 S 492-008
 (7)  
Install the jack adapter to the jack point IV (Fig. 201).

 S 582-009

 (8)  
Put the nose auxiliary jack in its position.

 S 492-010

 (9)  
Put a load on the nose auxiliary jack point to 10,000 pounds (4500 kg).

 S 652-011

 (10)
 Move the leak test fuel from other tanks to the inboard main tanks and top off the tanks.

 NOTE: All other tanks must be empty before you top off the inboard
____
 main tanks.

 You can do the leak test of the inboard main tanks before you do a test of the reserve, outboard main and center wing tanks. In this case, fill the inboard main tanks immediately after you install, and put a load on, the nose auxiliary jack.
 G. Lower the Airplane
 S 862-012
 (1)  
Put the air/ground relay system to the ground mode
 (Ref 32-09-02/201).

 (2)  
Lower the auxiliary jack at the jack point VI (Fig. 201).

 S 582-013
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