NOTE: The left access door will open fully and the right
____ access door will drop approximately one inch (2.5 cm) from the fuselage frame when the last latch is opened.
NOTE: A lanyard is attached to the aft end of the right access
____ door to hold the access door to the APU compartment bulkhead.
CAUTION: BE CAREFUL NOT TO MOVE THE TWO APU ACCESS DOORS TO THE
_______ OUTBOARD SIDE FROM THE FULL OPEN POSITION. THE FULL OPEN POSITION IS WHERE THE APU ACCESS DOOR IS DOWN AND THE TWO HOLD-OPEN RODS ARE CONNECTED TO THE TWO BRACKETS ON THE APU COMPARTMENT BULKHEAD. DAMAGE TO THE ELEVATOR CONTROL SURFACES CAN OCCUR.
(b)
Open the left access door to the fully open position and remove the two hold-open rods from the two clips.
(c)
Remove the two quick-release pins from the two brackets on the left APU compartment bulkhead.
(d)
Connect the two hold-open rods from the left access door to the two brackets and install the two quick-release pins.
(e)
Push the right access door up and remove the lanyard from the pin on the aft APU compartment bulkhead.
(f)
Open the right access door to the fully open position and remove the two hold-open rods from the two clips.
(g)
Remove the two quick-release pins from the two brackets on the right APU compartment bulkhead.
(h)
Connect the two hold-open rods from the right access door to the two brackets and install the two quick-release pins.
D.
Oil Filter Element Removal
S 024-026
(1)
Do these steps to remove the oil filter element (2):
(a)
Put the container below the plug (6).
(b)
Remove the plug (6) to drain the oil from the oil filter cover
(4)
and into the container.
(c)
Remove the packing (5) from the plug (6).
1) Discard the packing (5).
(d)
Put the container below the oil filter housing and oil filter cover (4).
(e)
Remove the four nuts (7) and four washers (8) that attach the oil filter cover (4) to the oil filter housing.
(f)
Remove the oil filter cover (4) from the oil filter housing.
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A
747-400
MAINTENANCE MANUAL
SEE A
FWD
APU COMPARTMENT SEE B
FWD
6. PLUG
5. PACKING 7. NUT (4 LOCATIONS) A
8. WASHER
(4 LOCATIONS)
4. OIL FILTER
COVER
3. PACKING
2. OIL FILTER
ELEMENT
1. RETAINER
RING
OIL FILTER
HOUSING
FWD
B
Oil Filter Element Installation
Figure 401
L77686
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49-27-03
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
(g)
Remove the packing (3) from the oil filter cover (4). 1) Discard the packing (3).
(h)
Remove the retainer ring (1) and oil filter element (2) from the oil filter cover (4). 1) Discard the oil filter element (2).
NOTE: The oil filter element (2) cannot be cleaned.
____
(i) Make sure you install all necessary protection covers.
TASK 49-27-03-404-012
3. Oil Filter Element Installation (Fig. 401)
_______________________________
A. References
(1)
AMM 12-13-02/301, Auxiliary Power Unit
(2)
AMM 49-11-00/201, Auxiliary Power Unit
B.
Consumable Materials
(1)
G50097 Lockwire, Corrosion Resistant Steel (0.025 Inch Diameter) -MS9226-03
