S 862-076
(2)
Set all FLT CONTROL HYD POWER TAIL switches on the P461, Pilots' Overhead Maintenance Panel in SHUTOFF.
S 862-077
(3)
Set the STAB TRIM 2 and 3 switches on the control stand to CUTOUT.
S 862-078
(4)
Open 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
S 862-079
(5) Release pressure in hydraulic systems No. 1 and 2 (AMM 29-11-00/201) for removal of the right inboard PCP filter.
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A
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MAINTENANCE MANUAL
S 862-114
(6)
Release pressure in hydraulic systems No. 3 and 4 (AMM 29-11-00/201) for removal of the left inboard PCP filter.
S 012-080
(7)
If it is necessary, remove these access panels (AMM 06-09-06/201):
(a)
334HB (left) or 344HB (right)
(b)
335DB (left) or 345DB (right)
(c)
334AT (left) or 344AT (right)
S 862-081
(8)
Move the control column in the two directions to release all the remaining pressure in the inboard elevator PCP.
E.
Remove the Inboard Elevator PCP Filter
S 022-082
(1)
Do these steps to remove the inboard elevator PCP filter:
(a)
Put a bucket below the inboard elevator PCP filter to catch all leakage hydraulic fluid.
(b)
Remove the filter cap (2).
(c)
Pull the filter element (1) from the manifold hole.
(d)
Remove the backup rings (3) and the packing (4) from the filter cap.
(e)
Remove the backup rings (5) and the packing (6) from the filter element.
TASK 27-31-07-402-083
7. Inboard Elevator PCP Filter Installation
________________________________________
A. Consumable Material
(1)
D00153 Fluid, Hydraulic Fire Resistant - BMS 3-11
(2)
D00013 Lube, Skydrol Assembly - MCS 352
(3)
A00704 Sealant - RTV 162 (Preferred)
(4)
A00280 Sealant - RTV 3145 (Optional)
B. Parts ~.............................................................................. | AMM | | AIPC | ................. ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ................................................................................ | 204 | 1 | Element - Filter | 27-31-07 | 03 | 135 | | | 2 | Cap - Filter | | | 120 | | | 3 | Ring - Backup | | | 125 | | | 4 | Packing | | | 130 | | | 5 | Ring - Backup | | | 140 | | | 6 | Packing | | | 145 | | | | | | | | 2......…........…...................................…...........….....…........1
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A
747-400
MAINTENANCE MANUAL
C. References
(1)
AMM 06-09-06/201, Stabilizer and Elevator Access Doors and Panels
(2)
AMM 24-22-00/201, Manual Control
(3)
AMM 29-11-00/201, Main Hydraulic Supply System
D.
Access
(1)
Location Zone
335 Elevator Inboard, LH
345 Elevator Inboard, RH
(2)
Access Panel
334HBL Inboard Elevator Actuator Access Panel
344HBR Inboard Elevator Actuator Access Panel
E.
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