Conmet Conventional - 3. Identification; Hub Identification Methods

4 ConMet
3. Identication
WHEEL MOUNTING
SYSTEMS
ConMet wheel hubs are available
in both hub pilot and ball seat nut
congurations.
Hub Pilot Wheel Mounting
The hub pilot wheel mounting
system makes use of a single
two-piece ange nut on each wheel
stud for both single and dual wheel
applications (see gure 10). The
hub pilot wheel mounting system is
also known as the Uni-Mount-10™
(10 stud), WHD-10™ (10 stud),
WHD-8™ (8 stud), and ISO system.
8
106821a
SINGLE DUAL
Hub Pilot Mounting System
FIGURE 10
Ball Seat Wheel Mounting System
The ball seat wheel mounting
system makes use of the spherical
contact area between the nut and
wheel to both locate the wheel and
hold the wheel tight against the
brake drum (see gure 11).
The ball seat wheel mounting
system is also known as the stud
piloted, ball seat cap nut (BCN)
and double cap nut (DCN) system.
9
106822a
SINGLE DUAL
Ball Seat Mounting System
FIGURE 11
IDENTIFYING CONMET
HUB ASSEMBLIES
Identifying your hub assembly
is important for many reasons.
It will enable you to properly
service the hub assembly
and purchase the appropriate
replacement parts if needed. Plus,
if a warranty issue arises, you’ll
then be able to provide details on
all aspects of the ConMet hub.
This section is devoted to nding
and understanding the different
identication numbers associated
with ConMet hubs.
Vehicle Identication Number
(VIN)
The quickest and easiest method
of identifying your hub assembly
is to note the vehicle identication
number (VIN) and call the truck
dealership. The dealership can
then tell you what hubs were
installed on your vehicle. If this is
not possible, there is a variety of
identication numbers located on a
ConMet hub assembly.
Casting Number
This number is physically cast
into the hub and appears in large
characters usually on the back side
of the mounting ange near the
stud head (see gure 12).
10
106829a
CASTING NUMBER ON THE
BACK SIDE OF THE
MOUNTING FLANGE
Casting Number on the Back Side of
the Mounting Flange
FIGURE 12
Machining Number
This number is stamped on one of
the following:
- Mounting ange face (see
gure 13)
- Diameter of the mounting
ange (see gure 14)
- Back side of the mounting
ange (see gure 15)
- Barrel of the hub (see gure
16)
The machining number represents
the way the hub is machined
(e.g., hub pilot vs. ball seat, 8.78”
vs. 8.53” vs. 9” brake drum pilot
diameter).
11
106828a
MOUNTING FLANGE FACE
Mounting Flange Face
FIGURE 13
12
106825b
MOUNTING FLANGE DIAMETER
Mounting Flange Diameter
FIGURE 14
13
106826a
MOUNTING FLANGE BACKFACE
Mounting Flange Backface
FIGURE 15