(b)
EXTINGUISHER BOTTLES LEFT
(c)
EXTINGUISHER BOTTLE RIGHT
(d)
EXTINGUISHER BOTTLE LEFT
S 865-097
(21)
Set and hold the EXT TEST switch on the P8-1 panel to 1.
S 755-098
(22)
Make sure only these lights on the P8-1 panel come on:
(a)
R (green)
(b)
L (green)
(c)
APU (green)
S 865-099
(23)
Release the EXT TEST switch.
S 865-100
(24)
Set and hold the EXT TEST switch on the P8-1 panel to position 2.
S 755-101
(25)
Make sure these lights on the P8-1 panel are come on:
(a)
R (green)
(b)
L (green)
(c)
APU (green)
(26)
Release the EXT TEST switch.
(27)
Make sure all lights on the P8-1 panel do not come on.
(28)
Remove electrical power if it is not necessary (AMM 24-22-00/201).
S 865-102
S 755-103
S 865-104
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
TASK 26-21-00-725-105
4. Tubing Leakage Test___________________
A. Consumable Materials
(1) Source of dry compressed air, capable of
regulating to 35 |5 psig
B. Equipment
(1) Engine Fire Extinguishing System Test Equipment - C26004-8
C. References
(1) AMM 24-22-00/201, Power - Control
D. Access
(1) Location Zone
101, 102 Control Cabin
E. Prepare for the Test
S 935-106
(1)
Put a mark on all four bottle discharge lines to use when you install the lines after the test.
S 865-109
(2)
Disconnect the four bottle discharge lines at the bottles.
S 865-110
(3)
Seal the forward fairing discharge lines with these steps
(a)
Open the fan cowls.
(b)
Seal the discharge nozzles with the test equipment plugs.
S 865-111
(4) Seal the core discharge line with these steps.
(a)
Open the left fan duct cowl and thrust reverser half (AMM 78-31-00/201).
(b)
Seal discharge nozzles with the test equipment plugs.
S 865-112
(5)
Connect the right hose from one bottle to the left hose from the same bottle.
(6)
Seal one of the two hoses and keep the other one open.
S 865-114
(7)
Connect the supply of compressed air to the open hose.
S 865-113
F. Do the test to find the leaks
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
26-21-00
ALL ú ú 03 Page 513 ú Mar 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
S 785-115
CAUTION:_______APPLY PRESSURE ONLY TO TUBING. DO NOT PRESSURIZE THE FIRE BOTTLE. DAMAGE TO THE DISCHARGE PORTS CAN OCCUR.
(1)
Apply 35 |5 psig to the discharge line.
S 915-117
(2)
Permit a minimum of 3 minutes for the air pressure in the fire extinguisher tubes to become stable.
S 785-118
(3)
Isolate the air pressure source from the fire extinguisher tubes.
S 785-119
(4)
Make sure that after 2 minutes the pressure does not decrease by more than 1 psi.
S 085-120
(5)
Release the air pressure and disconnect the air source.
G. Put the Airplane back to its usual condition.
S 085-121
(1)
Remove all plugs and caps installed on the fire extinguisher nozzles.
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