S 024-066
(6)
Remove the oil pump (20):
(a)
Remove the six bolts (37) and the keywashers (38) that attach the oil pump (20) to the accessory gearbox (32).
(b)
Carefully remove the oil pump (20).
(c)
Remove the packing (36).
1) Discard the packing (36).
S 034-076
(7)
Remove the external tubes:
(a)
Remove the pressure pump tube (22) from the oil filter coupling tube (1) 1) Remove the packings (4A and 21).
a) Discard the packings.
(b)
Remove the pressure valve tube (2) from the oil filter coupling tube (1) 1) Remove the packings (4 and 5).
a) Discard the packings.
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747-400
MAINTENANCE MANUAL
(c)
Remove the oil tube (34) that is between the oil pump (20) and the accessory gearbox (32)
(d)
Remove the packings (33 and 33A). 1) Discard the packings (33 and 33A).
S 034-070
(8) Remove the strainer sleeve (35) from the accessory gearbox (32).
TASK 49-27-07-424-002
3. Oil Pump Installation (Fig. 401)
_____________________
A. Standard Tools and Equipment
(1)
Pliers - Snap Ring, 120°
B.
Consumable Materials
(1)
D00418 Oil - Aircraft Turbine Engine
C. Parts ~.............................................................................. | AMM | | AIPC | ................. ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ................................................................................ | 401 | 4 | Packing | 49-27-00 | 01 | 20 | | | 4A | Packing | | | 15 | | | 5 | Packing | | | 20 | | | 7 | Packing | | | 210 | | | 9 | Packing | | | 215 | | | 11 | Packing | | | 215 | | | 19 | Packing | | | 200 | | | 20 | Oil Pump Assembly (Oil Pump) | 49-27-07 | 01 | 65 or | | | | | | | 70 | | | 21 | Packing | 49-27-00 | 01 | 15 | | | 28 | Packing | | | 260 | | | 28A | Packing | | | 270 | | | 33 | Packing | 49-27-07 | 01 | 30 | | | 33A | Packing | | | 40 | | | 36 | Packing | | | 60 | | | 41 | Packing | 49-27-00 | 01 | 255 | | | 41A | Packing | | | 265 | | | 42 | Packing | 49-16-00 | 02 | 170 | 2.......….......…...................................…...........…......….......1
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747-400
MAINTENANCE MANUAL
D. References
(1)
12-22-02/301, Auxiliary Power Unit (Oil Change)
E.
Access
(1)
Location Zone
318 APU Compartment-Bottom Inlet Plenum, Accessory Gearbox Forward Face
(2)
Access Panel
317AL APU Access Door
318AR APU Access Door
F.
Procedure
S 644-069
(1)
Lubricate the packings (4, 4A, 5, 21, 28, 28A, 33, 33A, 41, and 41A) with oil.
S 434-073
(2)
Install the external tubes:
(a)
Install the retainer ring (3) on the pressure valve tube (2).
(b)
Install the packings (4 and 5) on the pressure valve tube (2).
(c)
Install the pressure valve tube (2) in the oil filter coupling tube (1).
(d)
Install The retainer ring (23) on the pressure pump tube (22).
(e)
Install the packings (4A and 21) on the pressure pump tube (22).
(f)
Install the pressure pump tube (22) in the oil filter coupling tube (1).
(g)
Install the packings (33 and 33A) on the oil tube (34).
(h)
Install the oil tube (34) in the accessory gearbox (32).
(i)
Install the packing (36) on the oil pump (20).
(j) 中國航空網 www.k6050.com 航空翻譯 www.aviation.cn 本文鏈接地址：747-400 AMM 飛機維護手冊 機載輔助動力 2(26)
