D.
Prepare for Removal
S 862-062
(1)
Do this task: "Supply Electrical Power" (AMM 24-22-00/201).
S 862-085
(2)
Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a)
P7, Overhead Circuit Breaker Panel
1) 7E7, L STAB TRIM S/O VLV
2) 7E20, R STAB TRIM S/O VLV
S 862-082
(3)
Do this task to release the pressure in the hydraulic systems No. 2 and No. 3: "Remove Hydraulic Power" (AMM 29-11-00/201).
S 862-083
(4)
If the electrical power is not necessary, do this task: "Remove Electrical Power" (AMM 24-22-00/201).
S 012-059
(5)
Open the access door 312A (AMM 06-09-05/201).
E.
Remove the Elevator Feel Computer Filter
S 022-060
(1)
Remove the filter element (8):
(a)
Use a bucket to catch the hydraulic fluid.
(b)
Remove the filter retainer (10).
(c)
Remove the filter element (8).
(d)
Remove the backup retainers (12) and the packing (7).
(e)
Remove the backup retainers (9) and the packing (11).
TASK 27-31-14-402-061
7. Elevator Feel Computer Filter Installation__________________________________________
A. Consumable Materials
(1) D00288 Skydrol Assembly Lube, MSC 352
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A
747-400
MAINTENANCE MANUAL
(2)
D00153 Fluid Hydraulic, Fire Resistant, BMS 3-11
B.
Parts ~.............................................................................. | AMM | | AIPC | ................. ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ................................................................................ | 201 | 7 | Packing | 27-31-14 | 05 | 62 | | | 8 | Element Filter | | | 60 | | | 9 | Backup Ring | | | 53 | | | 10 | Retainer - Cap | | | 52 | | | 11 | Packing | | | 55 | | | 12 | Backup Ring | | | 63 | | | | | | | | 2......…........…...................................…...........….....…........1
C.
Reference
(1)
AMM 06-09-05/201, Body Section 48 Access Doors and Panels
(2)
AMM 12-12-01/301, Hydraulic Systems
(3)
AMM 24-22-00/201, Manual Control
(4)
AMM 29-11-00/201, Main Hydraulic Supply System
D.
Access
(1)
Location Zone
311 Area Aft of Pressure Bulkhead, LH
312 Area Aft of Pressure Bulkhead, RH
(2)
Access Panel 312A Horizontal Stabilizer Jackscrew Access Door
E.
Install the Elevator Feel Computer Filter
S 422-062
(1)
Install the filter element (8):
(a)
Apply skydrol assembly lube to the backup retainers (12), the packing (7), and the threads of the filter element (8).
(b)
Install the backup retainers (12) and the packing (7) on the filter element (8).
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A
747-400 MAINTENANCE MANUAL
(c)
Install the filter element (8).
(d)
Apply skydrol assembly lube to the backup retainers (9), the packing (11), and the threads of the filter retainer (10).
(e)
Install the backup retainers (9) and the packing (11).
(f)
Install the filter retainer (10).
(g)
Tighten the filter retainer to 550-650 pound-inches.
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