737-300 400 500 AMM 飞机维护手册 起落架 LANDING GEAR 3(109)

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 (a) While you turn the wheel, tighten the axle nut to 300
 pound-feet lube torque.
 (b) Loosen the nut to zero torque.
 (c) While you turn the wheel, tighten axle nut to 150 pound-feet in
 one continuous turn of the axle nut.
 NOTE: This method will prevent an incorrect indication of the____
 break-away torque (caused by the stop and start turn of
 the nut).
 (d) Make sure the lock holes are aligned.

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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737-300/400/500MAINTENANCE MANUAL
 (e)  If lock holes are not aligned, continue to tighten the nut to the first lock hole.
 S 424-032
 (10) Install the retainer ring of the axle nut.
 NOTE: Make sure the tang of the axle nut retainer ring extends
____ through the holes of the axle nut and washer as shown in Figure 401.
 S 424-027
 (11) Use the three sets of bolts and washers to install the hubcap.
 NOTE: On the outboard wheels, align the hole in the hubcap with
____ the pneumatic valve extension of the tire before you install the bolts.
 S 494-028
 (12)
 Install lockwire on all the bolts.

 S 424-029

 (13)
 Put the hubcap fairing on the hubcap and turn the eight Cam-Loc fastners (outboard wheels only) to attach the fairing.

 (14)
 Fill the tires (AMM 12-15-51/301 and AMM 32-45-00/201).

 (15)
 Lower the main gear and remove the jack (AMM 07-11-11/201).

 (16)
 Do a check on the tire for correct tire pressure (AMM 12-15-51/301).

 S 224-030
 S 844-031
 S 224-039
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 ú ú  ú 01.101 ú BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.  Page 408Jul 12/02 

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737-300/400/500MAINTENANCE MANUAL
 NOSE LANDING GEAR WHEEL - REMOVAL/INSTALLATION
______________________________________________
 1.  General_______
 A.  This procedure tells you how to remove and install the nose landing gear wheel (referred to as "wheel" in this procedure).
 B.  When you replace a nose wheel and tire assembly, you can replace the wheel and tire assembly on the other side. Differences in the diameter between the new and worn tires can contribute vibration to the nose landing gear. You can decrease this if you install the tires that have equal pressure, nearly the same inflated diameters, and matching supplier part numbers.
 C.  Temporary use of 737-200 wheel and tire assemblies on 737-300 or 737-400 airplanes is permitted by service bulletin 737-32-1160. You must refer to this service bulletin before you install 737-200 wheel and tire assemblies on 737-300 or 737-400 airplanes. You can not use a 737-200 wheel and tire assembly on a 737-500 airplanes.
 TASK 32-45-21-024-001
 2.  Nose Landing Gear Wheel Removal_______________________________
 A.  Special Tools and Equipment
 (1)  
F80168-1 - Axle Nut Socket

 B.  
Standard Tools and Equipment

 (1)  
F72913-15 - Thread Protector, Nose Landing Gear

 (2)  
Wheel Change Dolly - Commercially Available

 (3)  
Tire Deflation Tool - 968RB

 C.  
References

 (1)  
AMM 07-11-31/201, Jack Airplane Axles

 (2)  
AMM 32-00-01/201, Ground Lock Assemblies

 (3)  
AMM 32-45-00/201, Tires and Wheels

 D.  
Access

 (1)  
Location Zone
 204 Nose Landing Gear

 E.  
Remove the Wheel (Fig. 401)

 S 214-002
 (1)  Make sure the ground lock assembly is installed in the nose landing gear (AMM 32-00-01/201).
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