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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
CYLINDER OR PISTON (EXAMPLE)
O-RING SEAL (EXAMPLE) BLUE CAM SEAL
ACTIVE
NOTE POSITION
BACKUP RING
OTHER (EXAMPLE)
OF RADIUS
CAM
B
RING
B
SPARE/ACTIVE DYNAMIC-SPARE/ACTIVE DYNAMIC O-RING SEAL ASSEMBLY INSTALLATION AND SPLIT CAM SEAL (EXAMPLE) INSTALLATION (EXAMPLE)
INNER
CYLINDER OUTER
CYLINDER
LOWER CENTERING CAM
ACTIVE ACTIVEDYNAMIC-SEAL STATIC-ASSEMBLY SEAL O-RINGS
SPARE LOWER
STATIC-BEARING
SEAL O-RINGS
SPARE
DYNAMIC
ROD WIPER
SEALS
SCRAPER ADAPTER
DUAL SPARE SEAL INSTALLATION
B-B
Nose Gear Shock Strut Seal Replacement
Figure 801 (Sheet 3)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
D.
E.
F.
G.
A
737-300/400/500MAINTENANCE MANUAL
Consumable Materials
(1)
D00070 Oil - Hydraulic, MIL-H-5606
(2)
G00669 Nitrogen - Gaseous, MIL-P-27401, 1800 psi (for servicing the shock strut of the nose gear)
(3)
D00250 Grease - Petroleum Jelly, VV-P-236
(4)
B00589 Solvent - Toluene, cleaning, TT-T-528
(5)
C00048 Primer - Dow Corning, RTV 1200
(6)
B00130 Solvent - Isopropyl Alcohol, TT-I-735 (15% to 20% solution)
(7)
A00303 Adhesive - GE, RTV-174
(8)
C00308 Compound - Corrosion Preventive, MIL-C-11796, Class 3References
(1)
07-11-21/201, Jack Airplane Nose
(2)
12-15-31/301, Main Landing Gear Shock Strut
(3)
12-15-41/301, Nose Landing Gear Shock Strut
(4)
32-00-01/201, Ground Lock AssembliesAccess
(1)
Location Zone
204 Nose Landing GearPrepare for the Replacement
S 498-001
(1)
Install the ground locks on all landing gear (Ref 32-00-01/201).
S 588-002
(2)
Lift the nose of the airplane until the shock strut extends approximately ten inches (07-11-21/201).
S 688-004
WARNING: YOU MUST FULLY DEFLATE THE SHOCK STRUT BEFORE YOU REMOVE
_______ THE VALVE BODY. INTERNAL PRESSURE CAN BLOW THE VALVE BODY OUT IF YOU DO NOT FULLY DEFLATE THE SHOCK STRUT FIRST. THIS CAN CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
WARNING:_______YOU MUST KEEP THE CHARGING VALVE OPEN. INTERNAL PRESSURE CAN BLOW THE LOOSENED GLAND NUT OUT IF YOU DO NOT KEEP THE CHARGING VALVE OPEN. THIS CAN CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
(3) Remove the cap from the charging valve on top of the shock strut to deflate the shock strut (Ref 12-15-41/301).
NOTE: Loosen the outer hexnut a maximum of two turns.
____
NOTE: The fluid in the shock strut will start to foam as you
____ decrease the pressure to ambient pressure. Slowly deflate the shock strut to prevent loss of fluid through the valve.
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737-300/400/500MAINTENANCE MANUAL
S 118-005
(4) Remove the fillet of sealant from the top of the gland nut and the outer cylinder.
NOTE: Use toluene to make the sealant soft and a plastic or
____ wooden spatula to remove it. You must remove the old sealant before you apply primer to the area and install the gland nut.
S 028-075
(5)
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