S 435-122
(2)
Connect the extinguisher discharge lines to the fire extinguisher bottles.
S 085-125
(3)
Remove any tags attached to the discharge lines.
TASK 26-21-00-725-131
5. Tubing Flow Check_________________
A. Equipment
(1)
Source of dry compressed air, capable of
regulating to 35 |5 psig
(2)
Pipe Plug, MS33514-10 for Engine 2 discharge
lines.
(3)
Pipe Plug, MS33514-12 for Engine 1 discharge
lines.
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737-300/400/500MAINTENANCE MANUAL
B. References
(1) AMM 24-22-00/201, Power - Control
C. Access
(1) Location Zone
101, 102 Control Cabin
D. Prepare for the Test
S 865-132
(1) Open these circuit breakers on the P6-2 panel and attach
DO-NOT-CLOSE tags:
(a)
EXTINGUISHER BOTTLES RIGHT
(b)
EXTINGUISHER BOTTLES LEFT
(c)
EXTINGUISHER BOTTLE RIGHT
(d)
EXTINGUISHER BOTTLE LEFT
S 935-134
(2) Put a mark on all four bottle discharge lines to use when you install the lines.
E. Do a Flow Check of the Fire Extinguishing Tubes.
S 035-153
(1)
Disconnect the tee fitting from discharge plug 1 on the forward (L) bottle.
S 485-154
(2)
Install the MS33514-12 pipe plug on the tee fitting.
S 865-155
(3)
Torque the pipe plug to 20 ft-lbs.
S 035-156
(4)
Disconnect the discharge line from discharge plug 1 on the aft (R) bottle.
S 785-157
CAUTION:_______DO NOT PRESSURIZE THE FIRE BOTTLES. ONLY APPLY PRESSURE TO THE TUBING. IT COULD CAUSE DAMAGE TO THE DISCHARGE PORTS.
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737-300/400/500MAINTENANCE MANUAL
(5)
Connect the dry air source to the discharge line.
S 785-158
(6)
Apply 35 |5 psig to the discharge line.
(a) Make sure that air flows freely from the three left engine extinguisher discharge nozzles.
S 085-159
(7)
Disconnect the dry air source.
S 085-160
(8)
Remove the pipe plug.
S 435-161
(9)
Connect the discharge lines to the bottle discharge ports.
S 785-162
(10)
Do the above procedure for the right engine discharge lines of both number 2 discharge plugs using the MS33514-10 pipe plug.
F. Put the airplane back to its usual condition.
S 865-163
(1) Close these circuit breakers on the P6-2 panel:
(a)
EXTINGUISHER BOTTLES RIGHT
(b)
EXTINGUISHER BOTTLES LEFT
(c)
EXTINGUISHER BOTTLE RIGHT
(d)
EXTINGUISHER BOTTLE LEFT
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ENGINE FIRE EXTINGUISHER BOTTLE - REMOVAL/INSTALLATION
______________________________________________________
1. General_______
A. The two engine fire extinguisher bottles are in the main landing gear wheel well. The removal/installation procedure is the same for both bottles.
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