Technical data

13773-001
32-41
Page 2 30 Nov 2000
Note: The bearing cup is press fit into the wheel half and should not be removed
unless replacement is necessary. To remove bearing cup, insert wheel into
boiling water or place in an oven not exceeding 212° Fahrenheit for 15 min-
utes. Remove wheel half from heat source and immediately remove bearing
cup with a fiber drift pin or suitable arbor press. Press in new bearing cup
while wheel half is still hot.
(3) Reassembly - Main Wheel, Tire, and Tube
(a) Acquire necessary tools, equipment, and supplies.
(b) Apply light coat of talcum powder to surface of tube and inside of tire.
(c) Position tire and tube in outboard wheel half ensuring valve stem is protruding through
hole in wheel half.
(d) Place outboard wheel half in proper alignment position with inboard wheel half and apply
light force to mate the wheel halves together. Do not pinch tube between wheel halves.
(e) Insert brake disc into inboard wheel half and align bolt holes with outboard wheel half.
(f) Install nuts, washers, and bolts.
(g) Torque nuts to 150 inch-pounds (16.9 N.m.).
CAUTION: Uneven torque of nuts can cause bolt failure with resultant wheel failure.
(h) Inflate tire and adjust pressure. (Refer to 12-10)
(i) Clean and repack bearing cones.
(j) Install bearing cones and grease seals into wheel halves and secure with snap rings.
(4) Installation - Main Wheel, Tire, and Tube
(a) Carefully slide wheel/tire assembly onto axle making sure inboard bearing is seated.
(b) While rotating wheel/tire assembly, install axle nut and torque to 150 to 200 inch-pounds
(16.9-22.6 N.m.) to seat bearing.
(c) Back off axle nut to zero torque.
(d) While rotating wheel, retorque to 30-40 inch-pounds (3.4-4.5 N.m.).
(e) Rotate axle nut to nearest slot and cotter pin hole, and install cotter pin.
(f) Install brake assembly. (Refer to 32-10)
(g) Inflate tires.(Refer to 12-10)
(h) Remove airplane from jacks. (Refer to 7-00)
(i) Install main gear fairings. (Refer to 32-10)
(5) Inspection/Check - Main Wheel Inspection
(a) Disassemble wheel. (Refer to 32-42)
(b) Inspect wheel halves for cracks, corrosion, or other damage. Areas with suspected cracks
should be dye-penetrant inspected. Cracked or badly corroded parts must be replaced.
Small nicks, pits, and scratches may be polished out with fine 400 grit wet or dry sandpa-
per.
Description P/N or Spec. Supplier Purpose
Bearing Grease ASG22 Shell Oil Co. Lubrication.
Talcum Powder - Any Source Lubrication.