Preventive Maintenance Consumer Information and Vehicle Identification
Medium Duty
(R10/06) Y53-6008 – 231 –
Federal Safety Standard Certification Label
The NHTSA regulations require a label certifying compliance
with Federal Safety Standard, for United States and U.S. Ter-
ritories, be affixed to each motor vehicle and prescribe where
such label may be located. This certification label, which indi-
cates the date of manufacture and other pertinent informa-
tion, is located on the driver's side door frame.
Component Identification
Each of the major components on your vehicle has an identi-
fication label or tag. For easy reference, record component
numbers such as, model, serial, and assembly number. See
the “Vehicle Component Register”
(last page of this manual).
Engine: For further information, please refer to the Engine
Operation and Maintenance Manual.
Clutch: Enclosed in clutch housing. Location depends on
manufacturer.
Transmission: For both manual and automatic transmis-
sions, the identification number is stamped on a tag affixed to
the right rear side of the transmission case.
Steer Axle: The front axle serial number is stamped on a
plate located on the center of the axle beam.
Drive Axles: The drive axle numbering system includes
three labels or stamps:
1. Axle Specification Number, usually stamped on the right
rear side of the axle housing. This number identifies the
complete axle.
2. Axle Housing Number Tag, usually located on the left for-
ward side of the housing arm. This tag identifies the axle
housing.
3. Axle Differential Carrier Identification, usually located on
the top side of the differential carrier. The following infor-
mation is either stamped, or marked with a metal tag:
Model No., Production Assembly No., Serial No., Gear
Ratio, and Part Number.
