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747-400
MAINTENANCE MANUAL
HOIST
CABLE
Fishpole Hoist and APU Rear Mount Sling Installation
Figure 401
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747-400 MAINTENANCE MANUAL
SEE A
1. BOLT 1. BOLT
3. 2. NUT WASHER (QTY 2) VERTICAL NUT3. 2. WASHER (QTY 2) VERTICAL
4. BUSHING SUPPORT 4. BUSHING SUPPORT
(2 LOCATIONS) TUBE (2 LOCATIONS) TUBE
BEAM
BEAM
5.
BOLT
6.
WASHER
7.
NUT
5. BOLT
(4 LOCATIONS)
6.
WASHER
7.
NUT
(4 LOCATIONS) SUPPORT
SUPPORT
10. AFT BLOCK BLOCKSHOCKMOUNT FOR THE 10. AFT SHOCKMOUNT FOR THE CONE BOLT CONE BOLT
8. WASHER 8. WASHER
(REF) (REF)LINK
LINK 9. CONE BOLT9. CONE BOLT NUT NUT
A1 A2
LORD MANUFACTURING COMPANY-
OPTIONAL TO
1 2
BARRY CONTROLS-
OPTIONAL TO
2 1
Aft Shockmount Installation Figure 402
F58187
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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 494-025
(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 HOIST IN THE KEYHOLE SLOT
_______ CAN CAUSE INCORRECT SUPPORT OF THE APU. THIS CAN CAUSE DAMAGE TO THE APU.
DO NOT USE THE SUPPORT POINT FOR THE APU EXHAUST DUCT TO ENGAGE THE FISHPOLE 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 slot bracket. 2) Visually make sure the hoist is correctly installed in the keyhole slot.
(d)
Connect the sling to the hoist and the APU ground handling lugs.
(e)
Tighten the hoist cable or chains to hold the APU during the aft shockmount removal.
S 024-023
(5)
Remove the APU aft shockmount (10):
(a)
Remove the nut (9) and the washer (8) from the cone bolt.
(b)
Remove the nuts (3), washers (2), bolts (1), and the bushings
(4)
which connect the vertical support tube to the shockmount (10).
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747-400 MAINTENANCE MANUAL
(c) Turn the vertical support tube lightly forward or aft to easily remove the shockmount (10).
NOTE: Loosen the bolt that attaches the support tube to
____ the structure if it is necessary to let the tube turn.
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