2. BACKUP RING
4.
BACKUP RING
5.
PACKING
4. BACKUP RING
7. FILTER ELEMENT
6. FILTER CAP
A
Outboard Elevator PCP Filter Installation
Figure 204
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
27-31-08
ALL ú ú 01 Page 218 ú Jun 10/88
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 747-400 MAINTENANCE MANUAL
(3) S 862-066Release pressure in the hydraulic systems No. 1 and 2 (AMM 29-11-00/201) for removal of the left outboard PCP filter.
(4) S 862-107Release pressure in the hydraulic systems No. 3 and 4 (AMM 29-11-00/201) for removal of the right outboard PCP filter.
(5) S 862-067Set all FLT CONTROL HYD POWER TAIL switches on the P461, Pilots' Overhead Maintenance Panel in SHUTOFF.
(6) S 862-068Open these circuit breakers and attach DO-NOT-CLOSE tags: (a) P180, DC Power Distribution Panel 1) 180H8, ELEV/RUD VLV SYS 1 2) 180E7, ELEV/RUD VLV SYS 2 3) 180H23, ELEV/RUD VLV SYS 3 4) 180E22, ELEV/RUD VLV SYS 4 (b) P7, Overhead Circuit Breaker Panel 1) 7E7, L STAB TRIM S/O VLV 2) 7E20, R STAB TRIM S/O VLV
(7) S 862-069If the electrical power is not necessary, do this task: Electrical Power" (AMM 24-22-00/201). "Remove
(8) S 012-070Remove the access panels 334LB (left) or 344LB (right), 336DB (left) or 346DB (right) if it is necessary (AMM 06-09-06/201).
(9) S 022-071Remove the outboard elevator PCP filter: (a) Put a bucket below the outboard-elevator PCP filter to catch the leakage hydraulic fluid. (b) Remove the filter cap (6).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
27-31-08
ALL ú ú 01 Page 219 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
(c)
Pull the filter element (7) from the manifold hole.
(d)
Remove the backup rings (4) and the packing (5) from the filter cap (6).
(e)
Remove the backup ring (2) and the packing (3) from the filter element (7).
TASK 27-31-08-402-072
7. Outboard Elevator PCP Filter Installation_________________________________________
A. Consumable Materials
(1)
A00704 Sealant - RTV 162 (preferred)
(2)
A00280 Sealant - RTV 3145 (optional)
(3)
D00153 Fluid, Hydraulic Fire Resistant - BMS 3-11
(4)
D00054 Lube, Skydrol Assembly - MCS 352
B. Parts ~.............................................................................. | AMM | | AIPC | ................. ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ................................................................................ | 204 | 2 | Ring | 27-31-08 | 10 | 60 | | | 3 | Packing | | | 65 | | | 4 | Ring | | | 50 | | | 5 | Packing | | | 55 | | | 6 | Cap - Filter | | | 40 | | | 7 | Element - Filter | | | 45 | | | | | | | | 2......…........…...................................…...........….....…........1
C. References
(1)
AMM 06-09-06/201, Stabilizer and Elevator 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
336 Elevator Outboard, LH
346 Elevator Outboard, RH
(2)
Access Panel 334LBL Horizontal Stab. Trailing Edge Access Panel, LH 344LBR Horizontal Stab. Trailing Edge Access Panel, RH 336DBL Leading Edge Actuator Access Panel, LH 346DBR Leading Edge Actuator Access Panel, RH
E.
Install the Outboard Elevator PCP Filter
S 422-073
(1)
Install the outboard elevator PCP filter:
(a)
Apply skydrol assembly lube on the packing (3), backup rings (2), and the fitting threads of the filter element (7).
(b)
Install the new packing and backup rings on the clean filter element (7).
