(b)
Do the fast check again for the landing gear.
S 363-068
(4) If the airplane does not have all the conditions given above after the second fast check, add air to or release air from the strut to get them to a point in the servicing band (Refer to the applicable shock strut servicing placards).
NOTE: This step is to permit the dispatch of the airplane for
____ one flight to a station where the shock strut servicing equipment is available.
TASK 12-15-05-603-028
4. Optional Nose Landing Gear Shock Strut Servicing (Fig. 301 and 302)________________________________________________
A. General
________
(1) This procedure is for servicing of the shock strut while support equipment is around the airplane. (For example, during an airplane overhaul). During this procedure, an axle jack is used to compress the shock strut while the airplane is on a fuselage nose jack.
B. Special Tools and Equipment
(1)
F70200-14 - Strut Inflation Tool
(2)
3MIT65B00163-1 - Landing Gear Strut Service Manifold Assembly
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747-400
MAINTENANCE MANUAL
(3)
3MIT65B00162 Nose Gear Steering Lock Assembly (for use on airplanes with steering piston rod of 2.24-inch diameter)
(4)
MIT65B01562 Nose Gear Steering Lock Assembly (for use on airplanes with steering piston rod of 2.37-inch diameter)
(5)
2MIT65B04011-41 Steering Lockout Pin
C. Standard Tools and Equipment
(1)
Clean, nitrogen or dry air source - 1800 psi with pressure gages
(2)
Clean container with graduations - 40-ounce minimum capacity
(3)
Adapters - Axle
(4)
Adapters - Jacking
(5)
Block - Inclined
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-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-6083 and MIL-H-5606 hydraulic fluids are optional.
The hydraulic fluid BMS 3-32 is recommended for landing gear
shock struts.
(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.
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747-400 MAINTENANCE MANUAL
(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)
E. References
(1)
AMM 09-11-00/201, Towing
(2)
AMM 32-00-30/201, Landing Gear Door Locks
(3)
AMM 32-21-02/301, Nose Landing Gear Shock Strut
(4)
AIPC 32-21-01 Fig. 4
(5)
AIPC 32-21-02 Fig. 1
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