(d)
Operate the rudder slowly, through a minimum of two full cycles.
(e)
Set the FLT CONTROL switch to the OFF position.
(f)
Make sure there are no leakage.
S 614-028
(7)
Service the standby and system B hydraulic reservoirs (Ref 12-12-00/301).
S 864-029
(8)
Remove electrical power (Ref 24-22-00/201).
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
STANDBY HYDRAULIC SYSTEM ELECTRIC MOTOR-DRIVEN PUMP (EMDP) - ADJUSTMENT/TEST
____________________________________________________________________________
1. General_______
A. This procedure contains the task to do an operational check of the hydraulic pump and the electrical circuits that supply power to the pump.
TASK 29-15-31-715-002
2. Standby Hydraulic System Electric Motor-Driven Pump (EMDP) Test_______________________________________________________________
A. Standard Tools and Equipment
(1)
Container to hold hydraulic fluid
(2)
Pressure gage - 0 to 3500 psi
B. References
(1)
12-12-00/301, Hydraulic Reservoir
(2)
12-40-00/201, Cleaning and Washing
(3)
24-22-00/201, Manual Control
(4)
29-09-00/201, Hydraulic Reservoir Pressurization System
C. Access
(1) Location Zone
101 Control Cabin, LH
102 Control Cabin, RH
215 Keel Beam
D. Prepare for Test
S 035-030
(1)
Disconnect the hydraulic lines.
(2)
Drain the hydraulic fluid into a container.
S 165-037
(3)
Clean all hydraulic fluid from the installation area if it is necessary (Ref 12-40-00/201).
S 435-003
(4)
Install the pressure gage in the pressure line between the pump and the standby pressure module.
(5)
Pressurize the standby reservoir (AMM 29-09-00/201).
S 685-031
S 865-004
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
S 865-001
(6) Make sure these circuit breakers are closed:
(a)
P6-2 Circuit Breaker Panel
1) FLT CONT SHUTOFF VALVES (2)
2) STBY RUD SHUTOFF VALVES
(b)
P6-4 Circuit Breaker Panel
1) AC INDICATION BUS NO. 1
(c)
P6-11 Circuit Breaker Panel
1) STBY HYD PUMP NORMAL
(d)
P6-12 Circuit Breaker Panel
1) STBY HYD PUMP (ALT)
S 865-005
(7) Make sure these switches, on the P5 panel, are in the OFF position:
(a)
The ALTERNATE FLAPS arm switch
(b)
The FLT CONTROL A switch
(c)
The FLT CONTROL B switch.
E. Do a Test of the Standby Hydraulic Pump (With Generator Power)
S 865-006
(1)
Put the GEN 1 or the left APU GEN switch (P5) to ON to supply electrical power to the No. 1 generator bus.
S 865-007
(2)
Put the FLT CONTROL B switch to STDBY RUD.
(a)
Make sure that the standby pump starts.
(b)
Make sure that the no-flow system pressure is between 2975 and 3100 psig.
S 865-008
(3)
Put the GEN 2 or the right APU GEN switch to ON to supply power to the No. 2 generator bus.
S 865-009
(4)
Put the GEN 1 or the left APU GEN switch to OFF to remove power from the No. 1 generator bus.
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