C.
References
(1)
AMM 32-00-15/201, Landing Gear Door Locks
(2)
AMM 32-00-20/201, Landing Gear Downlocks
D.
Access
(1)
Location Zones
711 Nose Landing Gear (NLG)
713/714 NLG Door Forward
715/716 NLG Door Aft
E.
Prepare to Remove the Service Placard
S 498-001
(1) Make sure the downlocks are installed on the nose and main landing gear (AMM 32-00-20/201).
S 498-012
WARNING:_______OBEY THE INSTALLATION 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.
(2)
Open the doors for the landing gear and install the door locks (AMM 32-00-15/201).
F.
Remove the service placard from the aft door for the nose landing gear.
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757
MAINTENANCE MANUAL
INFLATION PRESSURE - P.S.I.G.
SEE A FAR SIDE
AFT DOOR
FWD
SEE B (RH AFT DOOR ONLY)
A
2000
SERVICING INSTRUCTIONS - 757 N.L.G. SHOCK STRUT
EXAMPLE SERVICING INSTRUCTIONS______________________
1800 STRUT PRESSURE = 800 P.S.I.G. NITROGEN SERVICING ONLY.________________________
DIMENSION "X" = 11.80 TO 12.25 1. WITH APL WEIGHT ON GEAR DETERMINE STRUT
PRESSURE WITH GAUGE.
NITROGEN
1600 REFERENCE DATA CHARGING 2. DETERMINE CORRESPONDING "X" DIMENSION FOR
DIM "X" (TOP OF PINS)_____________________ VALVE THIS PRESSURE FROM SERVICING CHART.
COMPRESSED 9.46 IN.
1400 EXTENDED 24.36 IN. 3. ADD OR RELEASE DRY NITROGEN TO OBTAIN THE
PRESSURE EXTENDED - CORRECT "X" DIMENSION WITHIN THE SERVICING
200 P.S.I. NOM. BAND.
1200 OIL OIL AND NITROGEN SERVICING__________________________
CHARGING 4. OPEN NITROGEN VALVE & DEFLATE STRUT
VALVE COMPLETELY.
1000 5. FILL WITH MIL-H-5606 FLUID THRU OIL CHARGING
VALVE UNTIL OIL FLOWS BUBBLE FREE OUT OF
NITROGEN VALVE PORT. FOR EACH COMPLETE REFILL
DIM "X" OF OIL ADD 9 FLUID OUNCES OF LUBRIZOL 1395
800 CLOSE OIL CHARGING VALVE.
6. WITH APL WEIGHT ON GEAR INFLATE STRUT
APPROXIMATELY ONE INCH AND DETERMINE STRUT
600 PRESSURE WITH GAUGE AND THE CORRESPONDING
"X" DIMENSION FOR THIS PRESSURE FROM SERVICING
CHART.
7. IMPORTANT. FOR INITIAL NITROGEN SERVICING_________
400 INFLATE THE STRUT TO THE "X" DIMENSION OBTAINED
IN STEP 6 PLUS 1.0 INCHES CLOSE NITROGEN VALVE
AFTER SEVERAL LANDINGS PROCEED TO STEP 8.
200 8. AFTER SEVERAL LANDINGS RESERVICE WITH DRY
NITROGEN PER STEPS 1,2 & 3 ABOVE.
NOTE: IF THE STRUT HAS BEEN COMPLETELY DEFLATED____
0 FOR ANY REASON, SERVICE WITH OIL AND NITROGEN
10.0 12.0 14.0 16.0 18.0 20.0 22.0 24.0 PER STEPS 4 THRU 8. PERIODIC OIL SERVICING SHOULD
BE PERFORMED PER SECTION 12 OF THE BOEING
"X" DIMENSION (INCHES) MAINTENANCE MANUAL.
BAC27NLG0010
B
Nose Gear Servicing Placard Installation
Figure 801
32-21-01
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