S 414-027
(3)
Close the left APU access door, 317AL, and right APU access door, 318AR:
(a)
Remove the two quick-release pins, disconnect the two hold-open rods and put the two hold-open rods in the two clips on the right access door.
(b)
Install the two quick-release pins in the two brackets on the right APU compartment bulkhead.
(c)
Lift the right access door until you can install the lanyard on the pin at the aft APU compartment bulkhead.
NOTE: The lanyard will hold the right access door on the APU
____
compartment bulkhead.
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747-400
MAINTENANCE MANUAL
(d)
Remove the two quick-release pins, disconnect the two hold-open rods and put the two hold-open rods in the two clips on the left access door.
(e)
Install the two quick-release pins in the two brackets on the left APU compartment bulkhead.
(f)
Make sure the insulation covers are correctly attach to the APU compartment firewall.
(g)
Lift the left access door until the two APU access doors are approximately aligned.
(h)
Close the two APU access doors.
(i)
Close the six latches on the right access door.
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747-400 MAINTENANCE MANUAL
AFT SHOCKMOUNT - REMOVAL/INSTALLATION
_____________________________________
1. General_______
A. This procedure contains the tasks to remove and install the APU aft shockmount. You can remove the APU aft shockmount with the APU installed in the airplane. You must hold the APU with a fishpole hoist and a sling when you disconnect the aft shockmount.
B. The rear shockmount is referred to as the aft shockmount.
C. The APU aft shockmount is on the top rear part of the APU.
D. You can get access to the APU aft shockmount through the APU access doors. There is sufficient space on the sides of the APU to get access to the aft shockmount.
TASK 49-13-05-004-001
2. Aft Shockmount Removal (Fig. 401, Fig. 402)______________________
A. Equipment
(1)
PF51-002-1 Hoist - Fishpole, Manual Powered
06714 P. F. Industries Inc.
151 S. Michigan St., Seattle, WA 98108-3225 or
(2)
AP6108 Hoist - Fishpole, Advanced Chain-Driven
Morgan Aero Products
2719 Pacific Avenue, Everett, WA 98201
(3)
Mallet - Rubber (commercially available)
(4)
2OHME65B00780-1 Sling - APU Rear Mount
B.
Access
(1)
Location Zones
221 Control Cabin - Left
222 Control Cabin - Right
310 Fuselage - Station 2360 to Station 2792
(2)
Access Panels
317AL APU Access Door - Left
318AR APU Access Door - Right
C.
Procedure
S 864-002
(1)
Make sure the APU control switch on the P5 panel is OFF and attach a DO-NOT-OPERATE tag.
S 864-003
(2)
Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a)
P6 Main Power Supply Panel
1) 6K18 APU ALTN CONT
(b)
P83 Panel, E8 Aft Equipment Center
1) APU PRIMARY CONT
S 014-004
(3)
Open the APU access doors:
(a)
Open the latches on the APU access doors.
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