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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
6) INDICATOR MASTER DIM BUS NO. 1 DC 7) INDICATOR MASTER DIM BUS NO. 2 DC 8) INDICATOR MASTER DIM BUS SECT 1 9) INDICATOR MASTER DIM BUS SECT 2 10) INDICATOR MASTER DIM BUS SECT 3 11) INDICATOR MASTER DIM BUS SECT 4 12) INDICATOR MASTER DIM BUS SECT 5 13) INDICATOR MASTER DIM BUS SECT 6
E. Do a Test of the Pump Low Pressure Warning System for the System A or B
S 865-003
(1)
Set the LIGHTS switch, on the P2 panel, to the TEST position.
S 215-004
(2)
Make sure these lights come on:
(a)
The two MASTER CAUTION lights (Captain's and First Officer's lightshield)
(b)
The HYD light (First Officer's lightshield)
(c)
The LOW PRESSURE lights (ENG 1 and ELEC 2 for system A; ELEC 1 and ENG 2 for system B), on the P5 panel, for the applicable system.
NOTE: Other annunciator lights will come on but you can ignore
____
those lights.
S 865-005
(3)
Put the LIGHTS switch back to the DIM or BRT position.
S 495-035
(4)
Install the hydraulic test bench:
(a)
Disconnect the pressure hose from the applicable engine or electric hydraulic pump.
(b)
Install a cap on the pressure port of the pump.
(c)
Connect the pump pressure hose to the hydraulic test bench.
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737-300/400/500MAINTENANCE MANUAL
(d) Connect the return hose of the hydraulic test bench to the return port of the ground service module for the applicable system.
S 215-009
(5)
Make sure the applicable LOW PRESSURE lights (ENG 1 and ELEC 2 for system A; ENG 2 and ELEC 1 for system B) come on.
S 785-010
(6)
Slowly increase the hydraulic pressure.
(a) Make sure the MASTER CAUTION and the applicable LOW PRESSURE lights (ENG 1 and ELEC 2 for system A; ELEC 1 and ENG 2 for system B) with: (10-60552- 1) installed go off between 950 and 1450 psi. (10-60552-11) installed go off between 1100 and 1500 psi. (10-60552-22) installed go off between 1100 and 1500 psi. (10-60552-35) installed go off between 1300 and 1600 psi.
S 785-011
(7) Slowly decrease the pressure.
(a) Make sure the MASTER CAUTION and the applicable LOW PRESSURE lights (ENG 1 and ELEC 2 for system A; ELEC 1 and ENG 2 for system B) with: (10-60552- 1) installed come on between 1350 and 700 psi. (10-60552-11) installed come on between 1400 and 1000 psi. (10-60552-22) installed come on between 1400 and 1000 psi. (10-60552-35) installed come on between 1500 and 1200 psi.
S 095-034
(8) Remove the hydraulic test bench:
(a)
Disconnect the hydraulic test bench from the pump pressure hose.
(b)
Remove the cap from the pressure port of the pump.
(c)
Connect the pressure hose to the pressure port of the applicable engine or electric hydraulic pump.
(d)
Disconnect the return hose of the hydraulic test bench from the ground service module.
F. Do the Test of the Pump Low Pressure Warning System for the Standby System
S 865-017
(1) Put the LIGHTS switch, on the P2 panel, to the TEST position.
(a) Make sure the STANDBY HYD LOW PRESSURE light comes on.
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