(Ref. Fig. 310B/TASK 12-14-32-991-027-A)
**ON A/C ALL
(12) Refer to the Table 2 and compare the nitrogen pressure that you read from the pressure gage (20). If the two pressures are not the same (+/- 1 bar (14.5037 psi) for the measured temperature, do these steps:
(a)
Connect the nitrogen supply hose (24) to the three-way valve (22) which is connected to the top charging valve (1).
(b)
Open the supply valve on the nitrogen source. NOTE : To increase the nitrogen pressure, open the control valve
____ (25). To release the nitrogen pressure, open the control valve (23).
NOTE : It is possible that a small quantity of hydraulic fluid
____ can be released from the charging valve when nitrogen is discharged. If the volume of fluid that flows from the bottom charging valve is more than 0.6 l (0.1585 USgal):
-you must replenish the MLG shock absorber hydraulic oil (Ref. TASK 12-12-32-611-008)
-refer to the MLG Design Authority.
(c)
Slowly open the top charging valve (1).
(d)
Slowly increase or release the nitrogen pressure until the pressure is correct for the measured temperature.
(e)
Close the control valve (23) or (25).
(f)
After 15 minutes, measure the pressure at the top charging valve
(1) again. Make sure that the pressure is correct.
(g)
Close the top charging valve (1).
(h)
Close the supply valve on the nitrogen source.
(13)
After one hour, do these steps to make sure the pressures are correct:
(a)
Measure the temperature of the MLG adjacent to the top charging valve (1).
(b)
Slowly open the bottom charging valve (3).
(c)
At the bottom charging valve (3), read and record the pressure shown on the pressure gage (20).
(d)
Close the bottom charging valve (3).
(e)
Slowly open the top charging valve (1).
(f)
At the top charging valve (1), read and record the pressure shown on the pressure gage (20).
(g)
Close the top charging valve (1).
(h)
Make sure that the pressures are correct with the values in Tables 1 and 2 for the measured temperature.
(14)
Remove the filling hoses (21) from the charging valves (1) and (3).
(15)
TORQUE the charging valves (1) and (3) to between 0.57 and 0.79 m.daN
(50.44 and 69.91 lbf.in).
1EFF : ALL 1 12-14-32Page 369 1 1 Aug 01/05R 1 1 1CES 1
(16)
Use SPECIAL MATERIALS (Material No. 05-004B) to do a leak check of the charging valves (1) and (3).
(17)
Install the blanking cap (2) on the top charging valve (1).
(18)
Install the blanking cap (4) on the bottom charging valve (3).
(19)
Remove the pressure gages (20) and the filling hoses (21) from the three-way valves (22).
(20)
Do the Para. 4.C. again for the other shock absorber.
5. Close-up
________ Subtask 12-14-32-942-061
A. Removal of Equipment
(1)
Remove the warning notice(s).
(2)
Remove the safety barriers.
(3)
Remove the access platform(s).
(4)
Remove the ground support and maintenance equipment, the special and standard tools and all other items.
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TASK 12-14-32-200-001
Inspection of the MLG Shock Absorbers Before Flight
WARNING : PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU
_______ START A TASK ON OR NEAR:
-
THE FLIGHT CONTROLS
-
THE FLIGHT CONTROL SURFACES
-
THE LANDING GEAR AND THE RELATED DOORS
-COMPONENTS THAT MOVE.
WARNING : MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING
_______ GEAR.
1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific safety barriers
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
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