(2)
Make sure that the aircraft electrical circuits are de-energized (Ref. TASK 24-41-00-862-002)
(3)
Make sure that the flight configuration precautions were obeyed (Ref. TASK 32-00-00-860-001).
(4)
Make sure that the Green hydraulic system is depressurized (Ref. TASK 29-10-00-864-001).
(5)
Make sure that the reservoir of the Green hydraulic system is depressurized (Ref. TASK 29-14-00-614-001).
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Subtask 32-31-33-865-052
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU L/G/LGCIU/SYS1/NORM 1GA C09 121VU HYDRAULIC/LGCIU/SYS2 2GA Q35 121VU HYDRAULIC/LGCIU/SYS1/GRND SPLY 52GA Q34 121VU HYDRAULIC/G HYD/PUMP ENG1/CTL 1701GK R35 121VU HYDRAULIC/G HYD/PUMP ENG1/MONG 1702GK R34
Subtask 32-31-33-941-051
C. Safety Precautions
(1) Make sure that the warning notices are in position to tell persons not to pressurize the Green hydraulic system: - on the panel 40VU in the cockpit, - on the ground service panel of the Green hydraulic system.
Subtask 32-31-33-560-050
D. Preparation of the Replacement Component
(1)
Remove and discard the cotter pin (45) from the removed MLG door uplock (11).
(2)
Remove the nut (46), the washer (47), the bolt (49) and the lever (48).
(3)
Remove and discard the cotter pin (41).
(4)
Remove the nut (40), the washer (42), the bolt (43) and the lever (44).
WARNING : OBEY THE MANUFACTURER'S INSTRUCTIONS WHEN YOU USE THE
_______
SPECIAL MATERIAL.
THIS MATERIAL IS DANGEROUS.
(a) Apply SPECIAL MATERIALS (Material No. 05-002) to the splines of the levers (44) and (48), the bolts (43) and (49) and the splines of the new MLG door uplock (11).
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(b)
Align the master splines and install the lever (44) on the splined shaft of the MLG door uplock (11).
(c)
Install the bolt (43), the washer (42) and the nut (40).
(d)
Safety the nut (40) with a new cotter pin (41).
(e)
Align the master splines and install the lever (48) on the splined shaft of the MLG door uplock (11).
(f)
Install the bolt (49), the washer (47) and the nut (46).
(g)
Safety the nut (46) with a new cotter pin (45).
(h)
Apply the corrosion preventive compound to the nuts, bolts and adjacent areas (Ref. TASK 51-75-13-916-002).
Subtask 32-31-33-860-051
E. Preparation for Installation
(1)
Clean the component interface and/or the adjacent area.
(2)
Do an inspection of the component interface and/or the adjacent area.
(3)
Make sure that the parts retained from the removed component are clean and in the correct condition.
WARNING : OBEY THE MANUFACTURER'S INSTRUCTIONS WHEN YOU USE THE
_______
SPECIAL MATERIAL.
THIS MATERIAL IS DANGEROUS.
(a) Apply SPECIAL MATERIALS (Material No. 05-002) to the bolts (1) and the bushes (5).
4. Procedure
_________
(Ref. Fig. 401/TASK 32-31-33-991-001) Subtask 32-31-33-420-051
A. Installation of the MLG Door Uplock 2521GM (2520GM)
(1)
Put the MLG door uplock (11) in position and install the bushes (5), the bolts (1), the washers (29) and the nuts (28).
(2)
Safety the nuts (28) with the new cotter pins (27).
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(3) Remove the blanking plugs.
(4) Connect the hydraulic pipes (10) and (14) to the hydraulic connectors of the MLG door uplock (11).
R R (5) TORQUE the pipes (10) and (14) to between 1.5 and 1.7 m.daN (11.06 and 12.53 lbf.ft) and mark them with PAINTS FOR DETAIL (INTERNAL AND EXTERN AL) (Material No. 07-010).
Subtask 32-31-33-480-050
B. Installation of the Rigging Pins (Ref. Fig. 402/TASK 32-31-33-991-003)
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