(d)
Connect the supply hose (6) to the reducer (13) in the supply port.
S 434-023
(12)
Connect the electrical connector DM147 (2) to the hydraulic pump (1).
S 864-036
(13)
Remove the DO-NOT-CLOSE tag and close these circuit breakers for the applicable system:
(a)
P714 Left Auxiliary External Power Center Panel
1) HYDR AUX AC PUMP 4
2) HYDR AUX AC PUMP 1
S 214-038
(14)
Look at the HYD QTY indication on the EICAS display to do a check of the fluid level in the hydraulic reservoir.
S 614-037
(15)
Fill the hydraulic reservoir if it is necessary (AMM 12-12-01/301).
S 714-039
(16)
Do these steps to do a test of the hydraulic pump (1):
(a)
Supply electrical power (AMM 24-22-00/201).
(b)
Put the HYD DEMAND 1 or HYD DEMAND 4 switch, on the P5 Overhead Panel, in the AUX position.
(c)
Examine the hydraulic pump installation for leakage.
(d)
If you find leakage, repair the cause of it.
(e)
Put the HYD DEMAND 1 or HYD DEMAND 4 switch in the OFF position.
S 214-040
(17)
Look at the HYD QTY indication on the EICAS display to do a check of the fluid level in the hydraulic reservoir.
(18)
Fill or drain the reservoir if it is necessary (AMM 12-12-01/301).
S 614-030
S 414-031
CAUTION: MAKE SURE YOU LATCH THE DOORS ON THE TRAILING EDGE FAIRING
_______ CORRECTLY. IF THE DOORS OPEN DURING A FLIGHT, THIS CAN CAUSE DAMAGE TO THE DOORS.
(19)
Close the doors in the trailing edge fairing (AMM 54-62-00/201).
(20)
Remove electrical power if it is not necessary (AMM 24-22-00/201).
S 864-032
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29-21-01
ALL ú ú 08 Page 408 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
AUXILIARY PUMP CASE DRAIN FILTER - SERVICING
____________________________________________
1. General_______
A. This procedure has one task. This task cleans the auxiliary pump case drain filter (referred to as the filter).
B. It is necessary to do a check of the filter to monitor the condition of the auxiliary pump. It is also necessary to do a check of the filter when you replace the auxiliary pump because of a mechanical malfunction.
C. A filter is installed aft of the reservoir in the No. 1 and No. 4 engine struts. It is necessary to open the doors in the trailing edge fairing to get access to the filter.
TASK 29-21-02-103-001
2. Auxiliary Pump Case Drain Filter Cleaning (Fig. 301)_________________________________________
A. Consumable Materials
(1)
Solvents (optional)
(a)
B00722 Solvent - Stoddard, P-D-680
(b)
B000719 Trichloroethylene 1-1-1, MIL-T-81533
(2)
D00153 Fluid - Hydraulic, Fire Resistant, BMS 3-11
(3)
D00567 Lubricant - Skydrol Assembly Lube, MCS 352
B.
References
(1)
AMM 29-11-00/201, Main Hydraulic supply System
(2)
AMM 54-62-00/201, Nacelle Strut Access Panels
(3)
AMM 54-62-02/501, Nacelle Strut Access Doors
C.
Access
(1)
Location Zone
454 Engine 1 - Strut Trailing Edge Fairing
484 Engine 4 - Strut Trailing Edge Fairing
(2)
Access Panel
454A Trailing Edge Fairing Doors - Engine 1
484A Trailing Edge Fairing Doors - Engine 4
D.
Procedure
(1)
Open the doors in the trailing edge fairing (AMM 54-62-00/201).
S 013-002
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