S 492-159
(34)
Connect the pressure line of the test bench to the supply line of the ground service disconnect for system B.
S 862-076
(35)
Pressurize the hydraulic reservoirs (AMM 29-09-00/201).
S 862-077
(36)
Close these circuit breakers:
(a) P6 panel,
1) PTU/LG BYPASS VALVE CONTROL 1
2) PTU/LG BYPASS VALVE CONTROL 2
3) AUTO SLAT NO. 1 DC
4) AUTO SLAT NO. 1 AC
5) AUTO SLAT NO. 2 DC
6) AUTO SLAT NO. 2 AC
S 862-160
WARNING: KEEP PERSONS AND EQUIPMENT AWAY FROM ALL CONTROL SURFACES AND
_______ THE NOSE GEAR WHEN HYDRAULIC POWER IS SUPPLIED. THE AILERONS, ELEVATORS, RUDDER, FLAPS, SLATS, SPOILERS, STABILIZER , AND THE NOSE GEAR ARE SUPPLIED WITH POWER BY THE HYDRAULIC SYSTEMS. INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR WHEN HYDRAULIC POWER IS SUPPLIED.
CAUTION: DO NOT OPERATE THE EMDP FOR MORE THAN TWO MINUTES IF THE NO. 1
_______ FUEL TANK CONTAINS LESS THAN 250 GALLONS (1675 POUNDS/760 KILOGRAMS) OF FUEL. YOU MUST LET THE RESERVOIR TEMPERATURE DECREASE TO AMBIENT TEMPERATURE BEFORE YOU OPERATE THE PUMP AGAIN. DAMAGE TO EQUIPMENT CAN OCCUR IF YOU DO NOT DO THIS.
(37) Pressurize hydraulic system A to 3000 psi with the electric motor-driven pump (EMDP) (AMM 29-15-00/201).
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A
737-300/400/500MAINTENANCE MANUAL
S 862-079
(38)
Pressurize hydraulic system B to 1500-2000 psi with the ground test bench (AMM 29-15-00/201).
S 862-080
(39)
Set the flap lever to the Flaps 2 position and let the flaps stop.
S 862-081
(40)
Open this circuit breaker:
NOTE: The PTU will operate.
____
(a) P6 panel,
1) NOSE GEAR AIR/GND
S 862-135
(41) Do these steps to operate the leading edge slats:
(a)
Slowly turn the left Stall Warning (AOA) Vane counterclockwise to the top stop.
(b)
Let the leading edge slats extend fully.
(c)
Slowly turn the left Stall Warning (AOA) Vane clockwise to the bottom stop.
(d)
Let the leading edge slats retract to the middle position.
S 862-084
(42)
Do the steps above a second time to operate the leading edge slats again.
S 862-085
(43)
Close this circuit breaker.
NOTE: The PTU will stop.
____
(a) P6 panel,
1) NOSE GEAR AIR/GND
S 862-086
(44)
Set the flap lever to the Flap 0 position and let the flaps retract fully.
S 862-087
(45)
Release the pressure from hydraulic systems A and B (AMM 29-15-00/201).
S 862-088
(46)
Open these circuit breakers and attach DO-NOT-CLOSE tags.
(a) P6 panel,
1) PTU/LG BYPASS VALVE CONTROL 1
2) PTU/LG BYPASS VALVE CONTROL 2
3) AUTO SLAT NO. 1 AC
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737-300/400/500MAINTENANCE MANUAL
4) AUTO SLAT NO. 1 DC 5) AUTO SLAT NO. 2 AC 6) AUTO SLAT NO. 2 DC 7) FLIGHT CONTROL ALTERNATE TRAILING EDGE FLAP DRIVE AC 3o
S 092-161
(47)
Disconnect the drain hose from the return line of the ground service disconnect for system B.
S 092-162
(48)
Disconnect the pressure line of the test bench from the ground service disconnect for system B.
S 092-163
(49)
Disconnect the supply line of the standby system EMDP from the standby system reservoir. Do this at the self-seal disconnect below the reservoir.
S 492-164
CAUTION: MAKE SURE THE DISCONNECT POPPET IS STRAIGHT BEFORE YOU
_______ INSTALL THE HOSE HALF OF THE SELF-SEAL DISCONNECT. IF TOO MUCH TORQUE IS NECESSARY TO DO THE INSTALLATION, DISCONNECT THE SELF-SEAL DISCONNECT AND AGAIN MAKE SURE THE POPPET IS STRAIGHT. AFTER THE INSTALLATION, MAKE SURE THE INDICATOR PINS EXTEND A MINIMUM OF 0.06 INCH. IF THE INDICATOR PINS ARE NOT CORRECTLY EXTENDED, FLUID FLOW WILL BE DECREASED OR STOPPED. THIS CAN CAUSE DAMAGE TO THE RESERVOIR OR THE PUMP.
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