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2) If the other engine on the same wing is running, put that ENGINE BLEED switch to the OFF position (P5 overhead panel).
(b) Supply pressure to the pneumatic system (AMM 36-00-00/201).
S 982-052
CAUTION: DO NOT TURN THE MANUAL OVERRIDE DRIVE QUICKLY WHEN THERE IS NO
_______ WING PNEUMATIC PRESSURE. FAST OPERATION OF THE MANUAL OVERRIDE DRIVE MAY RESULT IN TEMPORARY JAMMING OF THE ACTUATOR OR POSSIBLE DAMAGE TO THE DIAPHRAGMS.
(2) Slowly turn the manual override drive 90 degrees in the clockwise direction.
NOTE:____The valve will be in the open position. The valve does not lock in the open position.
S 862-053
(3) Supply pressure to the affected wing pneumatic manifold (AMM 36-00-00/201), if not pressurized.
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PRESSURE REGULATING AND SHUTOFF VALVE (PRSOV) - SERVICING
_________________________________________________________
1. General
_______
A. This procedure contains one task, to clean the air filters in the valve ports of the pressure regulating and shutoff valve (PRSOV).
B. To clean the air filters in the PRSOV, you must do the
steps that follow:
(1)
Open the access panels
(2)
Remove the two air filters from the valve
(3)
Inspect and clean the air filters
(4)
Install the air filters in the valve
(5)
Close the access panels
TASK 36-11-04-103-001
2. Clean the Air Filters in the PRSOV (Fig. 301)
__________________________________
A. Equipment
(1)
Air Source - Compressed, dry, filtered, less than 25 psi (172 kPa)
B.
Consumable Materials
(1)
B00185 - Solvent, Isopropyl Alcohol, TT-I-735
(2)
D00242 - Lubricant, DC44
(3)
D00559 - Lubricant, Thread - Mo-Lith No. 2
C.
Parts
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SEE A
STRUT ACCESS DOOR OPENING PRSOV PORT G1
PORT G2
7. AIR FILTER
5. SPRING 8. AIR FILTER
6. SPRING
3. PREFORMED
PACKING
4. PREFORMED PACKING
1. THREADED PLUG
2. THREADED PLUG
A
PRSOV Valve Filter Installation Figure 301
B52964
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~.............................................................................. | AMM | | AIPC | ................. ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ................................................................................ | 301 | 1 | Threaded Plug | 36-11-04 | 03 | 129 | | | 2 | Threaded Plug | | | 133 | | | 3 | Preformed packing | | | 130 | | | 4 | Preformed packing | | | 135 | | | 5 | Spring | | | 131 | | | 6 | Spring | | | 137 | | | 7 | Air filter | | | 132 | | | 8 | Screen - Air Filter | | | 139 | | 301 | 1 | Threaded Plug | 36-11-04 | 03A | 105 | | | 2 | Threaded Plug | | | 125 | | | 3 | Preformed packing | | | 110 | | | 4 | Preformed packing | | | 130 | | | 5 | Spring | | | 115 | | | 6 | Spring | | | 135 | | | 7 | Air filter | | | 120 | | | 8 | Screen - Air Filter | | | 140 | | 301 | 1 | Threaded Plug | 36-11-04 | 04 | 113 | | | 2 | Threaded Plug | | | 119 | | | 3 | Preformed packing | | | 114 | | | 4 | Preformed packing | | | 122 | | | 5 | Spring | | | 116 | | | 6 | Spring | | | 125 | | | 7 | Air filter | | | 117 | | | 8 | Screen - Air Filter | | | 128 | | 301 | 1 | Threaded Plug | 36-11-04 | 04A | 120 | | | 2 | Threaded Plug | | | 140 | | | 3 | Preformed packing | | | 125 | | | 4 | Preformed packing | | | 145 | | | 5 | Spring | | | 130 | | | 6 | Spring | | | 150 | | | 7 | Air filter | | | 135 | | | 8 | Screen - Air Filter | | | 155 | 2......…........…...................................…...........….....…........1 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：747-400 AMM 飞机维护手册 气动系统 PNEUMATIC SYSTEM(81)
