KIC Catalog

end oil.

Bearing Cup Installation: Ferrous Hubs—

If a bear-

ing cup has to be replaced, care should be taken not to

create burrs or otherwise damage the cup or cup seats.

The cup seats should be inspected for burrs or nicks

and repaired to ensure bearings seat properly. If the hub

bore is scored or damaged, the hub should be replaced.

Proper drivers should be used to install cups to prevent

bearing damage. The hub bore should provide a press

fit.

Bearing Cup Installation: Aluminum Hubs—

Clean

and inspect the bearing bore and cup seat. Remove

nicks, burrs, and foreign material. If the bore is scored

or damaged, the hub should be replaced. The hub bore

should provide a press fit.

To install bearing cups, heat the hub in an oven to 250

to 300° F (120 to 150° C). Hub temperatures can be

checked by using a temperature probe such as a ther-

mocouple or temperature sensitive wax markers which

are widely available from temperature measuring equip-

ment suppliers. To ease assembly, the cup may also be

chilled.

Coat the cup O.D. with a liquid graphite-based lubricant,

such as Lubri-Kote, A 1040 CR, or equivalent. Using

a cup driver and applying hand pressure, seal the cup

squarely against the shoulder. Lubricate both inner and

outer cups with axle oil and install, mating new bearing

cones with new cups.

WHEEL SEAL AND BEARING INSTALLATION

PROCEDURES

After the bore, spindle, seal, wear ring (where applica-

ble), and bearing have been examined and prepared,

the wheel seal is ready for installation. Recommenda-

tions on installation tools and procedures vary among

different wheel seal manufacturers, so be sure to use

only installation tools and procedures recommended

and approved by the wheel seal manufacturer.

NOTE:

All pre-lubrication must be done using the same

oil that will be used in service unless the wheel seal is

pre-lubed at the factory.

Hub Mounted Wheel Seal: Tool Installation—

1. Place the hub assembly flat or at least at a 45°

angle for seal installation.

2. Select the correct tool handle, adapter plate, and

bearing pilot for the seal being installed. Tool

identification information is printed on most man-

ufacturers’ packages or in catalogs. Prelube the

Wheel Seal and Bearing Removal, Installation & Maintenance

inner bearing cone with clean oil and place it in

the hub. Place the oil seal on the tool with the air

side facing the adapter plate or place the seal

onto the hub bore and insert the tool assembly

into the seal as recommended by the wheel seal

manufacturer.

3. Hold the tool straight and drive the seal with firm

hammer strokes until the seal is squarely seat-

ed. Ensure that the inner bearing rotates freely.

Lubricate the I.D. of oil seal with clean oil.

NOTE:

If the seal uses a separate wear sleeve, in-

stall it on the spindle as follows:

a. Place the wear sleeve on the spindle shoulder.

b. Select the proper tool and drive the sleeve

home. Check that it is completely on the spindle

and the edge is square with the shoulder within

0.005 inches.

Hub Mounted Wheel Seal: Hand Installation—

1. Lightly lubricate the seal I.D. and O.D. evenly

with oil. Also apply a thin film of oil on the hub

bore that is to receive the seal. Never install the

seal without oil.

2. Hand press the seal evenly into the bore.Arubber

mallet or other soft-faced tool, if recommended

by the manufacturer, may be used to gently tap

the seal into place. Apply an even driving force

to avoid cocking the seal or damaging the flange

surface. Be sure that the seal is evenly seated

and bottomed in the bore.

Spindle Mounted Wheel Seal: Tool Installation—

1. Place the seal on the spindle so that it has be-

gun to seat on the seal journal with the “oil side”

marking facing the spindle end.

2. Select the correct installation tool supplied by

the seal manufacturer. Do not install seals with-

out the correct tools and/or adapters (where ap-

plicable).

3. Place the correct driving tool in place and drive

the seal until the tool bottoms out. Rotate the

tool and repeat to ensure proper seal location.

4. Remove the driving tool and inspect the seal to

ensure that it is square and bottomed out within

0.005” on the spindle shoulder. Do not proceed

with further assembly until the seal is flush with

the spindle shoulder.

5. Pre-lubricate the inner bearing and insert it onto

the spindle. Fill the hub cavity with oil.