(2)
A tire inflation valve with an integral tire pressure gage is installed in the outer wheel segment. An over-inflation valve is installed in each outer wheel half to relieve at 375-450 psig to prevent excess pressure buildup.
(3)
Two tapered roller bearings are installed in the hub of each wheel.
C.
Main and Nose Gear Tires (Figs. 1 and 2)
________________________
(1)
GUN 001-010, 101-107, 206; The main gear tires are size H40 x 14.5-19 with a 22 ply rating. The tires have a speed rating of 210 mph.
(2)
GUN 051; The main gear tires are size H40 x 14.5-19 with a 22 ply rating. The tires have a speed rating of 225 mph.
(3)
The nose gear tires are size H31 x 13-12 with a 20 ply rating. On airplanes 001-010, 101-107, 206, the tires have a speed rating of 210 mph. On airplane 051, the tires have a speed rating of 225 mph.
(4)
Refer to servicing section of maintenance manual for proper main and nose gear tire inflation pressure (Ref 12-15-03).
D.
Nose Wheel Spin Brake (Fig. 3)
_____________________
(1)
Two wheel spin brakes, attached to the nose wheel well ceiling, stop the nose wheels from spinning after takeoff and gear retraction. The brake pads are installed on the contact surfaces of the spin brakes to provide good frictional contact.
(2)
Some airplanes have spin brake assemblies that have a spring arm with a brake wear pad made of a composite material. An improved spin brake assembly that is installed on subsequent airplanes has a spring arm with replaceable aluminum wear bars.
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SPIN BRAKE WITH BRAKE PAD SPIN BRAKE WITH ALUMINUM WEAR BARSMAKE OF COMPOSITE MATERIAL
Nose Wheel Spin Brake
Figure 3
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MAIN GEAR WHEEL AND TIRE - REMOVAL/INSTALLATION
_______________________________________________
1. General_______
A. This procedure contains two tasks. The first task removes the main gear wheel and tire assembly. The second task installs the main gear wheel and tire assembly.
TASK 32-45-01-004-001
2. Remove the Main Gear Wheel and Tire (Fig. 401)___________________________________
A. Equipment
(1)
Dolly - Wheel Change - Malabar 175
(2)
Wheel Equipment - B32010-14 (Preferred):
Includes B32010-16 or -23 wrench assembly B32010-3 thread
protector Wheel Equipment - B32010-1 (Optional) Includes B32010-4 wrench assembly B32010-3 thread protector
(3)
Tool - Tire Deflation - Safe-Cor, No. 968RB
(4)
Protector - MLG Axle Thread B32010-3
(5)
Protective Cover - Inner Wheel Surface -BTA-72032, Bill Thomas Assoc. Inc., 7405
Woodley Ave., Van Nuys, California
B.
References
(1)
AMM 07-11-03/201, Jacking Airplane Axles
(2)
AMM 24-22-00/201, Electrical Power, Control
(3)
AMM 32-00-20/201, Landing Gear Downlocks
(4)
AMM 32-45-04/601, Tires-Inspection/Check
C.
Access
(1)
Location Zones
211 Control Cabin, Left
212 Control Cabin, Right
731 Landing Gear Left
741 Landing Gear Right
D.
Procedure
(1)
Supply electrical power (AMM 24-22-00/201).
S 494-003
(2)
Make sure that the landing gear downlocks are installed (AMM 32-00-20/201).
S 864-002
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(3) S 494-053Lift the axle with a jack until there is clearance between the tire and the ground (AMM 07-11-03/201).
(4) S 864-005Set the parking brake to keep the brake rotor disks aligned.
(5) S 864-006Make sure the PARK BRAKE indicator light on the quadrant control stand panel, P10, comes on and stays on.
S 864-059
WARNING: BEFORE YOU REMOVE THE WHEEL AND TIRE ASSEMBLY YOU MUST DEFLATE
_______ THE TIRE OR EXAMINE THE WHEEL AND TIRE ASSEMBLY TO MAKE SURE THAT IT IS SAFE TO REMOVE IT WITHOUT TIRE DEFLATION. DO THE EXAMINATION OF THE WHEEL AND TIRE OR DEFLATE THE TIRE AS GIVEN IN THE PROCEDURE THAT FOLLOWS. A DEFECTIVE WHEEL AND TIRE ASSEMBLY CAN EXPLODE DURING OR AFTER REMOVAL IF YOU DO NOT DEFLATE THE TIRE. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
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