B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
32-22-00-010-001 Nose Gear Doors - Ground Doors Opening 32-22-00-410-001 Nose Gear Doors - Ground Doors Closing 12-14-32-991-006 Fig. 312 12-14-32-991-017 Fig. 313 12-14-32-991-007 Fig. 314 12-14-32-991-030 Fig. 315
3. Job Set-up
__________ Subtask 12-14-32-941-057
A. Safety Precautions
(1)
Put the safety barriers in position.
(2)
If the aircraft is on jacks, put the access platform in position.
(3)
On the panel 400VU:
-make sure that the landing gear control-lever 6GA is in the DOWN position
-put a warning notice in position to tell persons not to operate the landing gear controls.
(4)
Put a warning notice in position to tell persons not to operate the NLG controls.
(5)
Make sure that the ground safety locks are installed on the landing gear.
Subtask 12-14-32-010-051
B. Get Access WARNING : MAKE SURE THAT THE TRAVEL RANGES OF THE LANDING GEAR ARE CLEAR.
_______
(1) Open the NLG doors (Ref. TASK 32-22-00-010-001).
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4. Procedure
_________ Subtask 12-14-32-614-055
A. Aircraft on the Ground - Nitrogen Filling of the NLG Shock Absorber (Ref. Fig. 312/TASK 12-14-32-991-006)
(1)
Measure and record the shock absorber extension, dimension H.
(2)
Remove the blanking cap (1) from the charging valve (2). (Ref. Fig. 313/TASK 12-14-32-991-017)
(3)
Use a thermometer (-45 Deg.C to 70 Deg.C) to measure and record the temperature adjacent to the charging valve (2).
(4)
Install the FILLING ASSEMBLY (M21930) on the charging valve (2).
(5)
Install the standard charging equipment on the FILLING ASSEMBLY (M21930), as follows:
(a)
Connect the filling hose (12) to the FILLING ASSEMBLY. CAUTION : MAKE SURE THAT YOU USE A GAGE WITH THE SPECIFIED
_______ PRESSURE RANGE. THIS IS NECESSARY TO GET AN ACCURATE PRESSURE MEASUREMENT.
(b)
Install the pressure gage (11) on the 3-way valve (13).
(c)
Connect the 3-way valve (13) to the filling hose (12).
(6)
Make sure that the control valves (14) and (15) are closed.
(7)
Slowly open the charging valve (2) with the FILLING ASSEMBLY.
(8)
Read and record the pressure shown on the pressure gage.
(9)
Close the charging valve (2).
(10)
Use the recorded pressure and temperature values to identify the correct dimension H for the shock absorber extension. Compare this value with the dimension H you recorded in step (1). (Ref. Fig. 314/TASK 12-14-32-991-007)
(11)
No action is necessary if the value you recorded compares to dimension H plus or minus 5%.
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NLG Charging Valve - Detail and Location Figure 312/TASK 12-14-32-991-006
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NLG Shock Absorber - Filling System Figure 313/TASK 12-14-32-991-017
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NLG Pressure/Extension Data - Aircraft on the Ground Figure 314/TASK 12-14-32-991-007- 18 (SHEET 1)
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NLG Pressure/Extension Data - Aircraft on the Ground Figure 314/TASK 12-14-32-991-007- 28 (SHEET 2)
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NLG Pressure/Extension Data - Aircraft on the Ground Figure 314/TASK 12-14-32-991-007- 38 (SHEET 3)
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NLG Pressure/Extension Data - Aircraft on the Ground Figure 314/TASK 12-14-32-991-007- 48 (SHEET 4)
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NLG Pressure/Extension Data - Aircraft on the Ground Figure 314/TASK 12-14-32-991-007- 58 (SHEET 5)
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NLG Pressure/Extension Data - Aircraft on the Ground Figure 314/TASK 12-14-32-991-007- 68 (SHEET 6)
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