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Note: The convenient lubrication provisions of the E-Z Lube
®
and the oil
lubrication must not replace periodic inspection of the bearings.
Seal Inspection and Replacement
Whenever the hub is removed, inspect the seal to assure that it is not nicked
or torn and is still capable of properly
sealing the bearing cavity. If there is
any question of condition, replace the
seal. Use only the seals specied in the
Seal Replacement Chart.
To replace the seal:
1. Pry the seal out of the hub
with a seal removal tool or a
screwdriver. Never drive the seal
out with the inner bearing as
you may damage the bearing.
2. Apply a sealant similar to PERMATEX
®
High-Temp Red RTV Silicone
Gasket to the outside of the seal. Use only enough to provide a thin coat
to prevent any excess from contaminating the rubber lip(s) of the seal. It
is okay to apply a slight amount of lube to the inner rubber lip(s) to aid
with installing onto the spindle.
Note: No sealant should be used if the outside of the seal is rubber
coated. For these type of seals it is recommended to apply a thin coat of
oil to the outside rubber.
3. Clean the seal journal of the spindle to inspect for nicks or roughness.
Use a le to remove any burrs from the leading edge or shoulder area.
Clean the journal area with very ne emery cloth. Any presence of deep
gouges or scratches in this area may cause seal failure allowing lubricant
to leak out of the hub.
4, Clean the seal bore in the hub and inspect for any nicks, gouges, or
scratches that may prevent the seal from retaining the bearing lubricant
inside the hub.
Hubs/Drums/Bearings
Bad Seal: Nicks and Tears
(REPLACE SEAL)