(10)
Make sure the air flows freely from the nozzles located in the aft compartment ceiling: STA 1576 RBL 6.50 STA 1736 RBL 6.50 STA 1944 RBL 3.75 STA 1996 RBL 3.75.
S 715-245
(11)
Make sure the air or nitrogen does not flow freely from the nozzles in the forward compartment ceiling at STA 756, RBL 6.50 and STA 743, RBL 6.50 (approximately).
S 865-095
(12)
Remove the pressure from the halon distribution tubing.
S 085-096
(13)
Disconnect the dry plant air or dry nitrogen from the hose which leads to the aft cargo compartment halon distribution tubing.
S 435-138
(14)
Connect and tighten the hose to the aft discharge port of the bottle A (AMM 26-23-01/401).
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747-400 MAINTENANCE MANUAL
S 435-098
(15)
Remove cap from the hose leading to the aft halon distribution tubing.
S 035-133
(16)
Connect and tighten the hose to the aft discharge ports of the bottle B (AMM 26-23-01/401).
S 865-224
(17)
Remove electrical power if it is not necessary (AMM 24-22-00/201).
TASK 26-23-00-735-236
6. System Test - Metered Fire Extinguisher Discharge Lines_______________________________________________________
A. Special Tools and Equipment
(1) A26003-7 - Cargo Fire Extinguishing Regulator Test Equipment (one)
B. Standard Tools and Equipment
(1)
Nozzle pressure caps (three) - AN929
(2)
Regulated source of dry nitrogen - approximately 400 psig
C. References
(1)
AMM 24-22-00/201, Manual Control
(2)
AIPC 26-23-11, Fig. 1
(3)
WDM 26-23-11 thru WDM 26-23-12
(4)
SSM 26-23-01
D. Access
(1) Location Zones 124 Forward Cargo Container Compartment Aft Half 142 Aft Cargo Container Compartment R.H. 221 Control Cabin, LH 222 Control Cabin, RH
E. Prepare for Test
S 865-230
(1) Supply electrical power (AMM 24-22-00/201).
F. Forward Metered Discharge Line Test (Fig. 501)
S 215-099
(1)
Make sure all halon distribution tubings from the halon bottle shelf to the lower cargo compartment are not loosely connected or disconnected.
(2)
Remove the cargo liner to get access behind the jet nozzle.
S 035-096
(3)
Hold the tubing behind the jet nozzle and remove the jam nut on the jet nozzle in the ceiling pan in the forward metered tubing: STA 523 RBL 6.50 STA 743 RBL 6.50.
S 015-162
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747-400
MAINTENANCE MANUAL
(4) S 035-097Put a nozzle pressure cap on the open end of the jet nozzle: STA 523 RBL 6.50.
(5) S 035-175Remove the jet nozzle on STA 743, RBL 6.50.
(6) S 035-164Install the regulator test equipment at the end of the tubing (STA 743, RBL 6.50) where the jet nozzle is removed.
(7) S 485-165Install the jet nozzle at the end of the regulator test equipment.
(8) S 035-098Disconnect the hose between the forward discharge port of the bottle C (M7908) (STA 910, RBL 102) and the bulkhead fittings in the forward metered tubing.
(9) S 495-166Disconnect the hose from the forward discharge port of the bottle D (M6742) (STA 890, RBL 103).
S 425-286
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本文链接地址：747-400 AMM 飞机维护手册 防火 FIRE PROTECTION 2(121)
