11
3
Mounting area
(continued)
Support surface diameters
Support surface should be flat to the diameter recommended per SAE J694:
Number of Boltns Bolt Circle Mounting Type Backup Diameter Thread Size
10 11.25 inch U.S. Stud pilot 13.2-13.5 in. .750/1.125 in.
10 285.75mm Hub pilot 13.2-13.4 in. 22mm
10 335mm Hub pilot 15.0-15.2 in. 22mm
8 275mm U.S. Stud pilot 13.2-13.5 in. 22mm
8 275mm ISO Hub pilot 12.4-12.6 in. 20mm
Number of Bolts Bolt Circle Mounting Type Backup Diameter Thread Size
Corrosion
3-7
Certain environments can lead to corrosion. Some of the more common corrosives are: salt,
magnesium chloride and calcium chloride compounds used for snow removal and highly
alkaline materials. If the air used to fill tubeless tires, or the tire itself, is not dry, the areas of
the wheel under the tire can corrode severely.
Bead seat and valve stem
corrosion often are caused
by entrapped moisture. Mild
corrosion should be removed
thoroughly by wire brush and
the rim protected with non-
water-based tire lubricant (see
Section 4-1). Remove any severely
corroded wheel from service.
CAUTION The use of liquid tire balancers or sealants in Alcoa wheels may cause extremely
rapid corrosion of the wheel rim surface.
Severely corroded wheels are unsuitable for service. Alcoa wheels corroded by the use of liquid
tire balancers or sealants will not be replaced under the Alcoa limited warranty.
CAUTION
!
Hub bore gauge does not fit.
Hub bore gauge with severe corrosion. Remove any
severely corroded wheel from service
ACCEPTABLE
UNACCEPTABLE