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Under the rubber dust cap there is a
grease fitting. The grease fitting
presses grease into the hole that goes
all the way through the center of the
spindle and comes out by the back
bearing. At that point, it greases the
back bearing and fills the inside of the
hub. It then greases the front bearing.
When grease can be seen coming out
of the castle nut, the hub and bearing
are full.
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1. Once or twice a year (depending
on usage), install a jack under the
axle and raise until the tire gets off
the ground.
2. Push and pull the wheel from the
upper edge to feel the play and ro-
tate the wheel. If any play is felt,
then the castle nut needs to be ad-
justed or the bearings need be
changed. (Refer to
Bearing Adjust-
ment
for the castle nut adjustment)
3. When greasing the bearings, look
at the old grease that comes out. If
small silver-like filings are present,
it may indicate a problem with the
bearings. They should be replaced
immediately.
NNOOTTEE:: It is important to use a castle
nut cotter pin the same size as the
hole to make sure the Sure Lube sys-
tem works properly.
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Trailers are often stored for extended
periods of time, so it is important to
check all of these before any use.
– Bearings that have been re-
checked and repacked before stor-
age and after immersion in salt
water will last longer.
– Check the lubricant level when the
hub is warm.
– Since it is a boat trailer, it is recom-
mended to check just prior to
launching to be sure the hub is full
of grease when the axle is
submerged.
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Any good marine grade water-resist-
ant grease is recommended. Different
types of grease thickeners should not
be mixed.
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Since wheels and bearings are sub-
merged in the water when loading and
unloading, preventative maintenance
is required. Considering the various
ways this trailer might be used, follow
these general guidelines.
1. When water gets in the bearing
and in contact with the steel itself,
it will rust. So the most important
part is getting a good grade wheel
bearing grease that will not break
down when water is mixed with it.
2. Pack the bearings by forcing the
grease into all its small cavities. Fill
the cavity in the hub with grease.
3. Make sure the grease seals are in
usable condition.
4. Keep the bearings and grease free
of any dirt or foreign matter.
5. The wheel bearings should be re-
packed anytime the trailer is
stored.
6. If the trailer is often moved in the
water, the chances of getting water
in the bearings increase. Bearings
should then definitely be packed at
least twice during the season.
7. Towing a trailer over long distan-
ces has its good points and bad
points. Doing so may warm the
hub and grease it up enough to re-
move any water it may have col-
lected. However, moving the warm
hubs into the water shortly after a
long tow will cause them to take on
water through condensation. It is
therefore important to let them cool
before backing into the water.
8. Be sure the bearings are properly
adjusted (Refer to
Bearing
MAINTENANCE AND INSPECTION PROCEDURES
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