(8)
Make all of the systems that use hydraulic power operate (but not the landing gear) a minimum of six times at their maximum rate.
S 862-046
(9)
Do the procedure above to remove power from the applicable hydraulic system.
S 962-043
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A
737-300/400/500MAINTENANCE MANUAL
S 862-047
(10)
Remove the pressure from the applicable hydraulic reservoir (AMM 29-09-00/201).
S 962-048
(11)
Replace the filter element of the case drain filter for the engine-driven pump (AMM 29-15-91/201).
S 962-052
(12)
Replace the filter element of the case drain filter for the electric motor driven pump (AMM 29-15-34/201).
S 962-049
(13)
Replace the filter element for the pressure filter (AMM 29-15-71/201).
(14)
Pressurize the hydraulic reservoir (AMM 29-09-00/201).
S 862-050
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
HYDRAULIC SYSTEMS A, B, AND STANDBY - ADJUSTMENT/TEST
_____________________________________________________
1. General_______
A. This procedure has these four tasks:
-
Operational Test for the A or B Hydraulic System
-
Operational Test for the Standby Hydraulic System
-
System Test for the A or B Hydraulic System
-
System Test for the Standby Hydraulic System
B. Use the operational tests to quickly find if the hydraulic systems are serviceable.
C. Use the system tests to fully examine the hydraulic systems.
TASK 29-15-00-715-001
2. Operational Test for Hydraulic System A or B____________________________________________
A. References
(1)
12-12-00/301, Hydraulic Reservoir
(2)
24-22-00/201, Manual Control
(3)
71-00-00/201, Power Plant
B. Access
(1) Location Zones
101/102 Control Cabin
216/217 Main Wheel Wells
C. Prepare for the Test
S 655-002
CAUTION: DO NOT OPERATE THE SYSTEM A OR B HYDRAULIC PUMPS FOR MORE THAN
_______ TWO MINUTES WITHOUT FUEL IN THE FUEL TANKS. THE NO. 1 (FOR SYSTEM A) AND NO. 2 (FOR SYSTEM B) FUEL TANKS MUST HAVE A MINIMUM OF 250 GALLONS (1675 POUNDS/760 KILOGRAMS) OF FUEL IN THEM. IF THERE IS NOT SUFFICIENT FUEL IN THE FUEL TANKS, THE HYDRAULIC SYSTEMS WILL BECOME TOO HOT.
(1) Make sure the No. 1 and No. 2 fuel tanks each have 250 gallons (1675 pounds/760 kilograms) of fuel in them.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
S 865-146
(2) Make sure the trailing edge flaps are up or the airplane is in the ground mode.
S 865-003
(3) Supply electrical power (Ref 24-22-00/201).
S 865-004
(4) Close these circuit breakers: (a) P6-2 Panel 1) ELEC HYD PUMP CONT SYS A 2) ELEC HYD PUMP CONT SYS B 3) ENG PUMP DEPRESS VALVE NO. 1 4) ENG PUMP DEPRESS VALVE NO. 2 5) HYDRAULIC SYSTEM PRESSURE IND SYS A 6) HYDRAULIC SYSTEM PRESSURE IND SYS B (b) P6-3 Panel 1) INDICATOR MASTER DIM BUS BAT 2) INDICATOR MASTER DIM BUS NO. 1 DC 3) INDICATOR MASTER DIM BUS NO. 2 DC 4) INDICATOR MASTER DIM BUS SECT 1 5) INDICATOR MASTER DIM BUS SECT 2 6) INDICATOR MASTER DIM BUS SECT 3 7) INDICATOR MASTER DIM BUS SECT 4 8) INDICATOR MASTER DIM BUS SECT 5 9) INDICATOR MASTER DIM BUS SECT 6
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