S 014-004
(3)
Open the APU access doors:
(a)
Open the latches on the APU access doors.
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A
747-400 MAINTENANCE MANUAL
STRUCTURAL
SEE A STA 2733.89
STRUCTURAL
STA 2725.13
SEE B
KEYHOLE SLOT
INBD
FWD FISHPOLE HOIST
HOIST SEE C
CABLE
A
FISHPOLE HOIST REAR MOUNTCABLE SLING
APU GROUND CLEVIS HANDLING LUG
CLEVIS
APU STAND
REAR ASSEMBLY REAR
MOUNT YOKE ATTACH
SLING POINT
C
B
Fishpole Hoist and APU Rear Mount Sling Installation Figure 401
F58194
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A
747-400 MAINTENANCE MANUAL
SEE A
FWD
AFT SHOCKMOUNT
AFT SHOCKMOUNT (REF)
(REF)
CONE BOLT
CONE BOLT SUPPORT BLOCK
SUPPORT BLOCK (REF) (REF)
1. AFT MOUNT LINK 1. AFT MOUNT LINK (2 LOCATIONS) (2 LOCATIONS)
2. BUSHING
2.
BUSHING
3.
BOLT
3.
BOLT
4.
WASHER (QTY 2)
4.
WASHER (QTY 2)
5.
NUT
5. NUT (2 LOCATIONS)6. BOLT
6.
BOLT (2 LOCATIONS)
7.
WASHER
7.
WASHER
8.
NUT
8. NUT (2 LOCATIONS)
(2 LOCATIONS)
A1 A2
LORD MANUFACTURING COMPANY-OPTIONAL TO
1 2
BARRY CONTROLS-OPTIONAL TO
2 1
Aft Mount Link Installation
Figure 402
F58196
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747-400 MAINTENANCE MANUAL
(b)
Open the APU access doors.
(c)
Engage the support rods for the APU access doors.
S 494-018
(4)
Install the fishpole hoist and the sling:
(a)
Wind off and examine the fishpole hoist cable or chains to make sure its condition is good.
CAUTION:_______MAKE SURE YOU CAREFULLY EXAMINE THE KEYHOLE SLOT AREA. A DAMAGED KEYHOLE SLOT AREA CAN CAUSE INCORRECT SUPPORT OF THE APU. THIS CAN CAUSE DAMAGE TO THE APU.
(b)
Use a flashlight to examine the keyhole slot area for damage.
CAUTION: AN INCORRECT INSTALLATION OF THE FISHPOLE HOIST IN THE
_______ KEYHOLE SLOT CAN CAUSE THE HOIST TO DISENGAGE. THIS CAN CAUSE DAMAGE TO THE APU.
DO NOT USE THE SUPPORT POINT FOR THE APU EXHAUST DUCT TO ENGAGE THE FISHPOLE HOIST KEY. THIS POINT IS ON THE TOP CENTERLINE OF THE APU COMPARTMENT STRUCTURE APPROXIMATELY 13 INCHES (33 CM) AFT OF THE HOIST ATTACH POINT.
(c) Install the fishpole hoist in the keyhole slot in the top of the APU compartment structure:
NOTE: The aft hoist point is above and to the right of the
____ APU on a bracket between structural stations 2725.13 and 2733.89.
1) Attach the hoist block key from the left side of the keyhole bracket. 2) Visually make sure the hoist is correctly installed in the keyhole slot.
(d)
Connect the sling to the hoist.
(e)
Connect the sling to the ground handling lugs on the APU.
(f)
Tighten the hoist cable or chains to hold the APU while you remove the mount link.
S 024-006
(5)
Remove the aft mount link (1):
(a)
Remove the nut (8), the washers (7), and the bolt (6) that attach the aft mount link (1) to the APU.
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