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737-300/400/500MAINTENANCE MANUAL
(2) S 864-031Remove the DO-NOT-OPERATE tags from the components that follow: (a) The start lever. (b) The forward thrust lever.
(3) S 864-032Remove the DO-NOT-CLOSE tag and close the circuit breaker for the bleed air control on the P6 panel.
S 434-033
WARNING: OBEY THE INSTRUCTIONS IN THE PROCEDURE TO OPEN THE THRUST
_______ REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS WHEN YOU OPEN THE THRUST REVERSERS, INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
(4)
Close the thrust reversers (AMM 78-31-00/201).
S 434-034
(5)
Close the fan cowl panels (AMM 71-11-04/201).
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737-300/400/500MAINTENANCE MANUAL
BLEED AIR REGULATOR AND PRESSURE REGULATING
___________________________________________ SHUTOFF VALVE - ADJUSTMENT/TEST
_______________________________
1. General_______
A. This procedure contains a task to operationally check the Bleed Air Regulator (BAR) and Pressure Regulating Shutoff Valve (PRSOV). The procedure will check that the:
-Sense lines have no leakage
-Bleed air regulator will supply the correct control pressure
-PRSOV will open at the minimum supply pressure
-Overpressure switch will operate at the correct pressure range.
TASK 36-11-16-705-001
2. Bleed Air Regulator and Pressure Regulating Shutoff Valve Operational Test__________________________________________________________________________
A. Equipment
(1)
Nitrogen Source
(2)
Supply Pressure Gage - 0-200 PSIG
(3)
Pressure Regulator
(4)
Union Fittings - MS-6 (3 required)
(5)
Test Line Hoses - 0-200 PSIG
(6)
Control Pressure Gage - 0-60 PSIG
(7)
Cap
B. Consumable Materials
(1) D00010 Antiseize Compound, commercially available
C. References
(1)
AMM 36-05-00/201, Pneumatic System
(2)
AMM 36-11-15/401, Pressure Regulating and Shutoff Valve
(3)
AMM 36-11-16/401, Bleed Air Regulator
(4)
AMM 36-12-55/401, 450°F Thermostat
(5)
AMM 71-11-02/201, Fan Cowl Panels
(6)
AMM 78-31-00/201, Thrust Reverser System
D. Access
(1)
Location Zones
502/503 Fan Cowls - Left Nacelle
504/505 Thrust Reverser - Left Nacelle
602/603 Fan Cowls - Right Nacelle
604/605 Thrust Reverser - Right Nacelle
(2)
Access Panels
5737/5837 Fan Cowl Assembly
5738/5838 Thrust Reverser Cowl Assembly
5739/5839 Thrust Reverser Cowl Assembly
5746/5846 Fan Cowl Assembly
E. Prepare for the Operational Test
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S 865-002
WARNING: YOU MUST REMOVE THE PRESSURE FROM THE PNEUMATIC DUCTS BEFORE
_______ YOU REMOVE A PNEUMATIC SYSTEM COMPONENT. IF YOU DO NOT REMOVE THE PRESSURE FROM THE PNEUMATIC DUCTS, HOT HIGH PRESSURE AIR CAN CAUSE INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT.
(1) Remove the pressure from the pneumatic system (AMM 36-05-00/201).
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