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S 863-010
(3) Inflate the shock strut of the nose landing gear with dry nitrogen.
(a)
Remove the hose from the air valve , if it is installed.
(b)
Install the strut inflation tool on the shock strut. Use the instructions supplied with the tool.
CAUTION: NITROGEN ENTRAINMENT IN THE FLUID CAN CAUSE THE SHOCK
_______ STRUT TO DEFLATE TOO MUCH. WHEN THE SHOCK STRUT IS DEFLATED, THE "X" DIMENSION FROM FIGURE 302 SHOULD BE INCREASED 1.0 INCHES FOR A GIVEN PRESSURE TO COMPENSATE FOR THE NITROGEN ENTRAINMENT.
(c)
Open the nitrogen charging valve.
(d)
Add Nitrogen to the shock strut until the "X" dimension is 1.0 inch (2.5 cm) above the upper limit for a given pressure on the chart (Fig. 302).
(e)
Tighten the nut to 5-7 pound-feet to close the air valve (Detail A, Fig. 301).
(f)
Remove the strut inflation tool.
(g)
Install the cap for the air valve.
S 613-034
(4) 5-10 landings after you did a complete oil and Nitrogen servicing, do steps to inflate the shock strut with dry Nitrogen again.
TASK 12-15-02-843-039
6. Put the Airplane Back to Its Usual Condition____________________________________________
A. References
(1) AMM 32-00-15/201, Landing Gear Door Locks
B. Put the Airplane Back to Its Usual Condition
S 863-007
(1)
Remove the DO-NOT-OPERATE tag from the control lever for the landing gear.
(2)
Put the control lever for the landing gear to the DN position.
S 863-008
S 093-009
WARNING:_______OBEY THE REMOVAL PROCEDURE FOR THE DOOR LOCKS. THE DOORS OPEN AND CLOSE QUICKLY. THE MOVEMENT OF THE DOORS CAN CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
(3) Remove the door locks and close the doors (AMM 32-00-15/201).
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AIR VALVE CAP
AIR VALVE
SWIVEL NUT
AIR VALVE
SEE A BODY
A
DUST CAP
SEE B
FWD
OIL CHARGING VALVE
B
NOSE LANDING GEAR
Servicing of the Shock Strut for the Nose Landing Gear
Figure 301
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SERVICING INSTRUCTIONS 757-200 N.L.G. SHOCK STRUT
1800
(12,411)
1600 (11,032)
1400 (9653)
1200 (8274)
1000 (6895)
800 (5516)
600 (4137)
400 (2758)
200 (1379)
10.0 12.0 14.0 16.0 18.0 20.0 22.0 24.0
(25.4) (30.5) (35.6) (40.6) (45.7) (50.8) (55.9) (61.0)
Servicing Chart for the Shock Strut of the Nose Landing Gear
Figure 302 (Sheet 1)
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K16702
A
757
MAINTENANCE MANUAL
Servicing Chart for the Shock Strut of the Nose Landing Gear
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