MD Helicopters CSP-900RMM-2, Техническое обслуживание и ремонт

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CSP − 900RMM − 2 MD Helicopters, Inc.
Rotorcraft Maintenance Manual
Page 607
Revision 34
28-00-00
4. Fuel Cell Leak Check/Pressure Tests
NOTE:
Test method 1 or 2 are equally satisfac­
tory. The operator can select which test to
do.
A. Fuel Cell Leak Check/Pressure Test –
Method 1
NOTE:
It will be necessary to partially remove
the cabin floor if you do Method 1.
(Ref. Figure 601)
Aviation Turbine Fuel
Consumable Materials
(Ref. CSP − SPM)
Item Nomenclature
C702 Lockwire
C809 Leak Detector, Liquid
Special Tools
(Ref. CSP − SPM)
Item Nomenclature
T2014 Pressure Test Kit
T2014 − 1 Filter, 10 Micron
T2014 − 2 Pressure Gauge, 0.5 Increment
T2014 − 3 Shut − Off Valve
T2014 − 4 Manometer
T2014 − 5 Adapter
T2014 − 6 Regulator, Air Pressure
(1). Clean all grease, oil, and foreign
material from the interior and exterior
surfaces of components before you begin
this test.
The helicopter must be drained
of all fuel before a functional
leak test can be done.
NOTE:
When this test is done to satisfy the in­
spection requirements, it is not necessary to
completely defuel the helicopter. The fuel
level cannot be more than
600 lb (272 kg) .
(2). Defuel and drain fuel cell sump of all
fuel (ref. Section 12-00-00).
(3). Make sure that all fuel lines have been
connected.
(4). Make sure there is no damage to the
fuel system components.
The FUEL SHUTOFF valve
switch arms the fire extinguish­
ing system. Make sure BOTTLE DIS­
CHARGE switch is set in the OFF position.
(5). Make sure that the LH and RH engine
fuel shut-off valves are in the
CLOSED position on the FUEL
SYSTEM control panel.
(6). Make sure the fuel filler cap is tight.
(7). Plug, cap, or tape shut the aft fuel vent
system outlet (vent fairing).
(8). Remove Access Panel AL230 (ref.
Section 53-20-00).
(9). Remove AN814-8DL plug from the
auxiliary fuel port on the left aft fuel cell
vent fitting.
(10). Install adapter (T2014-5).
(11). Use air pressure regulator (T2014-6),
pressure gauge (T2014-2), and shut-off
valve (T2014-3).
(12). Connect the air supply hose and
U-tube manometer (T2014-4) hose to
adapter (T2014-5).
Make sure access panels A160,
A170, and A217 are installed
before you apply air pressure.
(13). If new fuel cell is installed, slowly apply
2.0 psig (13.8 kPa) clean filtered
regulated air pressure to get 56 inch
(142.24 cm) of water as measured on
manometer (T2014-4) to the port.
(a). Hold for 10 minutes as a precaution­
ary measure.
NOTE:
This will let air trapped between the fuel
cell and the helicopter structure to escape and
also let the cell adjust to the contour of the
cell cavity.
(b). Release the air pressure slowly and
repeat if necessary.
CAUTION
CAUTION
CAUTION