Rwd axle bearings

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Rwd axle bearings

FULL-FLOATING AXLE
Definition - axle bearing is on the outside of the axle housing.
No weight is on the axle shaft.
Used on 3/4 ton and larger trucks, and four wheel drive front axles.
If axle breaks wheel will not come off.
SEMI-FLOATING AXLES
Definition - axle bearing is inside the axle housing.
Weight of vehicle is on the axle shaft.
If the axle breaks the wheel will come off.
BEARING STYLES
Three styles of RWD solid axle bearings.
Ball Axle Bearing
Straight-Roller Axle Bearings
Tapered-Roller Axle Bearings
Lubricated from differential or packed with wheel bearing grease at time of installation.
BALL AXLE BEARINGS

Held in place by metal retainer bolted to the end of the axle housing.
Seal is inside of the axle bearing.
STRAIGHT-ROLLER

Held in place by a C-Clip in the differential case.
Seal is on the outside of the bearing.
Bearing is lubed from differential.
TAPERED-ROLLER
Held in place by metal retainer bolted to the end of the axle housing.

Two seals one inside of bearing, one outside.
IRS AXLE SHAFTS
Two types of independent suspension:
Swing Axle
Single Joint
Camber changes with suspension travel.
Independent Rear Suspension
Camber does not change with suspension travel.
Two Joints
Axle bearings are similar to FWD.
MAINTENANCE
Use correct lube type:
GL-1, GL-2, GL-3, GL-4, GL-5.
Posi-traction differentials require a Limited-slip additive.
Transaxles may require:
Gear oil
Motor oil
ATF
 

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