(2)
Install the upper cam (7) on the cylinder (3). NOTE : You must align the reference line on the upper cam (7) with
____
the reference line on the lower cam (8).
(Ref. Fig. 406/TASK 32-21-13-991-007)
(3)
Apply SPECIAL MATERIALS (Material No. 05-047) only to the longer bearing surface of the upper cam (7).
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NLG Shock Absorber - Reference Axes Figure 406/TASK 32-21-13-991-007
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(4) Carefully engage the cylinder (3) with the upper cam (7) in the sliding tube (9) until it touches the bottom of the bore.
WARNING : DURING INSTALLATION OF THE CYLINDER, MAKE SURE THAT YOU
_______ KEEP THE AXIS XX' PARALLEL TO THE AXIS YY' AND THE AXIS ZZ' PERPENDICULAR TO THE AXIS YY'. IF YOU DO NOT DO THIS, THE ASSEMBLY WILL NOT BE CORRECT. THIS IS DANGEROUS FOR AIRCRAFT SAFETY.
(Ref. Fig. 406/TASK 32-21-13-991-007)
(5)
Put the upper cam (7) in the position that agrees with the mark you made at removal.
(6)
Apply SPECIAL MATERIALS (Material No. 05-047) on the eight dowels (6), the retaining bush (5) and the retaining ring (4).
(7)
Install the eight dowels (6) and the retaining bush (5).
(8)
Install the retaining ring (4) with the PIN WRENCH (M46201). Put the bent end of the retaining ring (4) in the open groove of the retaining bush (5).
(9)
Make sure that the positions of the upper cam (7) and the lower cam
(8) are correct.
(10) With the shock absorber in the fully extended position, measure the dimension "A" which must be approximately 377.5 mm (14.86 in.).
Subtask 32-21-13-710-051
G. Test of the Shock Absorber
(1) Pressurize the shock absorber with dry nitrogen to 19 bars (275 PSI) for one hour.
NOTE : If this operation is performed at an ambiant temperature of
____ 15.C +/- 5.C, this time can be decreased to 15 minutes minimum.
(Ref. Fig. 407/TASK 32-21-13-991-008)
(a) Install the FILLING ASSEMBLY (M21930) on the charging valve (2).
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NLG Shock Absorber - Pressurization Figure 407/TASK 32-21-13-991-008
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(b) Install the standard charging equipment on the FILLING ASSEMBLY (M21930), as follows :
1 Connect the filling hose (22) to the FILLING ASSEMBLY
_
(M21930).
2 Install the pressure gage (21) on the 3-way valve (23).
_
3 Connect to the 3-way valve (23) to the filling hose (22).
_
4 Make sure that the control valves (24) and (25) are closed.
_
5 Connect the nitrogen source to the 3-way valve (23) with the
_
supply hose (26).
(c) Open the control valve (25) to inflate the shock absorber to 19 bars (275 PSI). Close the control valve (25) to stop the nitrogen supply.
(2)
After one hour, measure the pressure of the shock absorber : the pressure must not decrease.
(3)
Open the control valve (24) to depressurize the shock absorber.
(4)
Remove the standard charging equipment and the FILLING ASSEMBLY (M21930).
(5) Fully compress the shock absorber.
Subtask 32-21-13-420-055
H. Installation of the NLG Shock Absorber. NOTE : The shock absorber is empty, you must do a full servicing of the
____ shock absorber during the installation procedure.
(1) Install the NLG Shock Absorber (Ref. TASK 32-21-13-400-001).
5. Close-up
________
Subtask 32-21-13-865-055
A. Remove the safety clip(s) and the tag(s) and close this(these) circuit
breaker(s): R 1GG, 2GG, 3GG, 4GG, 1GV
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B. Put the aircraft back to its initial configuration.
(1)
Lower the aircraft on its wheels (Ref. TASK 07-11-00-586-001).
(2)
Remove the safety barriers.
(3)
Remove the warning notice(s).
(4)
Make sure that the work area is clean and clear of tool(s) and other items.
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_____________________________________________________
TASK 32-21-16-000-002
Removal of the NLG Drag Strut Assy (2528GM)
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