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 D.  The main gear tires are tubeless and are designated H40 x 14.5 -19 rated
 24 ply 225 mph.Nose Gear Wheel and Tire (Fig. 2)
________________________
 A.  The nose gear wheel assembly consists of forged aluminum made in separate halves for ease to mount the tubeless tires. The inner and outer wheel halves are bolted together and the joint between wheel halves is sealed with an O-ring. An air valve is located in the outer wheel half to permit inflation of mounted tires. A safety plug is also fitted in the outboard wheel half to protect the tire from high pressure. The diaphram within the safety plug will rupture at a predetermined pressure and vent the pressure to atmosphere. The wheels are installed with an inner and an outer roller bearing assembly on the tapered axle. The inner and outer bearings are protected against loss of lubricant and the entrance of dirt by grease seals.
 B.  The nose gear tires are 27" x 7.75" -15" tubeless tires rated 10 or 12 ply 225 mph.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
OUTSIDE WHEEL HALFINSIDE WHEEL HALF O-RING
INBD
FWD
THERMAL PLUG
(TORQUE TO 50 LB INCHES)

SEE A
TIRE 
WHEEL HALF INSIDE  O-RING  BRAKE ROTOR 
INFLATION  DRIVE KEY 
VALVE 

OUTER WHEEL INNER WHEELBEARING
BEARING AXLE
TRANSDUCER
BRAKE ASSEMBLY
OUTSIDE
WHEEL HALF WHEEL BALANCE WEIGHT
HUBCAP FAIRING (OUTBOARD WHEEL ONLY)
WHEEL TIE BOLTS
CAMLOCKS INBD
(8 PLACES) FWDHUBCAP
A
Main Gear Wheel and Tire (Bendix) Figure 1
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 ú  01  Page 2
 ú  Feb 25/86 

BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 4.  Nose Wheel Snubber
__________________
 A.  Two wheel snubbers are located on the ceiling panel in the nose wheel well to stop wheel rotation and the attending noises (Fig. 3). When the nose gear is retracted after a takeoff, nose wheel rotation will be stopped by tire contact with the snubbers. Each snubber consists of a spring bar attached to wheel well structure with a snubbing block of brake lining bolted to the forward (contact) end of the bar.

NOSE GEAR WHEEL
Nose Gear Wheel (Dunlop) Figure 2
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 ALL  ú ú 05 Page 3 ú Jun 25/85
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
SNUBBER BLOCK

Nose Wheel Snubber
Figure 3

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 ALL  ú ú 01 Page 4 ú Feb 20/84
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 TIRES AND WHEELS - MAINTENANCE PRACTICES
________________________________________
 1.  General
_______
 A.  This procedure tells you how to deflate and inflate the main and nose gear tires.
 TASK 32-45-00-612-001
 2.  Deflate the Tire
________________
 A. General ú (1) This task deflates the tire.
 B.  Special Tools and Equipment
 (1)
F70294-1 - Tire Deflator or use Schrader No. 4400

 C.  
Access

 (1)  
Location Zones
 204 Nose Landing Gear
 310/410 Main Landing Gear

 D.
Procedure ú ú S 612-008 ú         ú
　
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