D. Consumable Materials
(1) D00509 Fluid - Hydraulic, Petroleum Base, MIL-H-6083
NOTE: Unless you use only a small amount of fluid, approximately
____
1.0 percent of the total, you must mix MIL-H-6083 in the
correct proportion with Lubrizol 1395 before you fill the
shock strut.
You can intermix MIL-H-5606 and MIL-H-6083 or use it as an
alternative for MIL-H-5606.
Both MIL-H-6083 and MIL-H-5606 hydraulic fluids are optional.
The hydraulic fluid BMS 3-32 is recommended for landing gear
shock struts.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
E.
F.
G.
A
747-400
MAINTENANCE MANUAL
(2)
D00155 Lubrizol 1395 - Shock Strut Fluid Extreme Pressure Additive
(3)
D00070 Oil - Hydraulic, Petroleum Base, MIL-H-5606
NOTE: Unless you use only a small amount of fluid, approximately
____
1.0 percent of the total, you must mix MIL-H-5606 in the
correct proportion with Lubrizol 1395 before you fill the
shock strut.
The MIL-H-5606 is recommended fluid over the MIL-H-6083
fluid.
Both MIL-H-5606 and MIL-H-6083 hydraulic fluids are optional.
The hydraulic fluid BMS 3-32 is recommended for landing gear
shock struts.
(4) D00467 Fluid - fully Formulated Hydraulic, BMS 3-32 (Recommended)
Type I - Royco SSF, Shell SSF and Castrolaero 35 (These fluids
contain the mixture of MIL-H-6083 and Lubrizol 1395)
Type II - Royco LGF, Shell LGF and Castrolaero 40 (These fluids are the recommended fluid for servicing and contain the mixture of MIL-H-5606 and Lubrizol 1395)
References
(1)
AMM 09-11-00/201, Towing
(2)
AMM 32-00-30/201, Landing Gear Door Locks
(3)
AMM 32-13-02/301, Body Gear Shock Strut
(4)
AIPC 32-13-01 Fig. 5
(5)
AIPC 32-13-02 Fig. 2Access
(1)
Location Zone 755 Body Landing Gear, LH 765 Body Landing Gear, RH
Procedure (Fig. 301)
S 863-050
(1) Make sure the airplane is not on jacks.
S 493-025
WARNING: YOU MUST CAREFULLY INSTALL THE GROUND LOCKS IN ALL LANDING
_______ GEAR. AN ACCIDENTAL RETRACTION OF THE LANDING GEAR CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(2) Install the ground locks in all landing gear (AMM 09-11-00/201).
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
AIR VALVE (BELOW THE SURFACE)
SEE ASHOCK STRUT
SEE B
LOWER OUTER CYLINDER
X
FLOW FUSE (FOR EMERGENCY SHUTOFF) OUTER
SHUTOFF VALVE
2400 2300 2200 2100 2000 1900 1800 1700 1600 1500 1400 1300 1200 1100 1000
SERVICING
900
REFERENCE DATA
FULLY COMPRESSED STRUT:
800
X = 8.15 INCHES 700
FULLY EXTENDED STRUT: 600 X = 34.65 INCHES CYLINDER
A
PRESSURE GAGE
SEE C MAXIMUM BEND POSITION
1
OIL FILL VALVE
B (CHECK VALVE) INDICATOR
NEEDLE MAXIMUM BEND POSITION
C
1
1 THESE POSITIONS SHOW THE MAXIMUM RANGE THE VENDOR CAN BEND THE INDICATOR NEEDLE FOR CALIBRATION AT ZERO.
SERVICING
BAND
INFLATION PRESSURE (PSI)
400 500 PRESSURE AT FULL EXTENSION: 325 PSIG
7 8 9 10 11 12 13 14 15 16 2317 18 19 20 21 22 24 25 26 27 28 29 30 31 32 33 34 DIMENSION X (INCHES)
Body Gear Shock Strut Servicing Figure 301
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