Main Gear Wheel and Tire (Bendix Heavy Duty) 5C8
32-45-0 Figure 1 Jun 20/85
Page 2
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
3. Nose Gear Wheel and Tire
A. The nose gear wheel assembly (Fig. 2) 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. The wheels are installed with an inner and 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 24 x 7.7, Type VII tubeless tire.
500 Nose Gear Wheel and Tire
May 15/68 Figure 2 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 32-45-0 Page 3
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. (See figure 3.) When the nose gear is retracted after a takeoff, nose wheel rotation will be stopped by wheel 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.
H30070
Nose Wheel Snubber 500
32-45-0Page 4 Figure 3 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. Feb 15/67
TIRES AND WHEELS - MAINTENANCE PRACTICES
1. Tire Deflation
A. General
WARNING: DEFLATE THE TIRE FULLY BEFORE YOU REMOVE THE WHEEL AND TIRE ASSEMBLY. IF YOU DO NOT FULLY DEFLATE THE TIRE, INJURY TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR. BUT, WHEN YOU REMOVE THE WHEEL AND TIRE ASSEMBLY ONLY FOR MAINTENANCE ON THE BRAKE, YOU DO NOT HAVE TO DEFLATE THE TIRE IF YOU INSPECT THE WHEEL AND TIRE ASSEMBLY TO ENSURE THAT IT IS SAFE FOR REMOVAL WITHOUT DEFLATION (SEE THE STEPS THAT FOLLOW). FOR ALL OTHER MAINTENANCE, WHICH INCLUDES ALL TIRE AND WHEEL MAINTENANCE, YOU MUST DEFLATE THE TIRES BEFORE REMOVAL.
(1)
If you remove the wheel and tire for brake maintenance only, you do not have to deflate the tire if you have the conditions that follow:
(a)
The tires are not worn too much (Ref 32-45-00/601).
(b)
The tires are not hot.
(c)
There is no evidence of wheel damage, including cracked or missing tie bolts or tie nuts, or cracks in the wheel.
(2)
Always approach the wheels from the front or rear.
NOTE: Be very careful when you go near the wheel if you think there is tire or wheel damage.
(3)
If the tire is hot, let the tire cool before you deflate it.
B. Equipment and Materials
(1) Tire deflator - F70294-1 or Schrader No. 4400
C. Deflate Tire
(1)
For outboard wheels, remove hubcap, hubcap fairing and valve stem extension and bracket.
WARNING: DO NOT ATTEMPT TO REMOVE VALVE CORE UNTIL TIRE IS COMPLETELY DEFLATED. VALVE CORE WILL BE EJECTED AT HIGH VELOCITY IF UNSCREWED BEFORE AIR PRESSURE HAS BEEN RELEASED.
(2)
Remove valve cap and apply tire deflator to release tire pressure completely.
2. Tire Inflation
A. General
(1)
Tires should not be inflated to operating pressure until wheel is installed on the airplane. The airplane should remain on jacks until the tire is inflated.
(2)
Use an accurately calibrated airplane tire inflation gage for checking tire pressure. Do not overinflate tire. Refer to Landing Gear Tire Servicing, Chapter 12.
NOTE: Handle inflation gages carefully and make regular periodic checks for accuracy. Check gages any time malfunction is suspected.
(3)
Use only authorized tools and equipment and inflate tire.
500
Aug 01/94 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 32-45-0 Page 201
WARNING: TIRE AND/OR WHEEL FAILURE MAY OCCUR, CAUSING INJURY TO PERSONNEL OR DAMAGE TO EQUIPMENT, IF TIRE IS OVERINFLATED FROM ANY HIGH PRESSURE SOURCE. TIRE AND WHEEL ASSEMBLIES MUST BE SERVICED WITH INFLATION EQUIPMENT WHICH HAS BEEN SPECIFICALLY DESIGNED FOR THIS OPERATION.
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