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

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