My son has a 1977 GMC Sierra 15. The center support drive shaft bearing holder broke. We bought a bearing assembly. How in the world do we get the bearing off the drive shaft??? Please help. Someone....please
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Change both axel bearings at the same time. The pinion bearing can be tested by slowly turning the drive shaft by hand and listening for any rough spots. It could be a carrier bearing or a bad U joint too. Isolate it by dropping the drive shaft and turning the pinion yoke by hand. If there is a problem, you'll be able it feel it. Then look at the drive shaft for worn carrier bearing and U joints.
if diying and axle bad replace the whole unit from salvage or rebuild shop.if changing the bearings its a lot of work and you will need some special tools to put back together .first you need to use a lift or again have to remove unit from truck, disconnect battery remove drive shaft,remove pinion nut need large breaker bar loosen bolts to rear cover drain fluid remove cover have someone push axles toward center remove c locks slide out axles best way to remove bearings is slide hammer bearing removal unit remove rear [gears] dont loose shims will see pinion bearing bearing remove and replace now 2 put it back.need shim package, red lead, 4 ring and gear mesh adjustments ,,
Raise and support the vehicle. Remove the tire and wheel. .
Remove the brake rotor.
Disengage the wheel drive shaft from the wheel hub and bearing. Place a brass drift against the outer end of the wheel drive shaft in order to protect the wheel drive shaft threads. Sharply strike the brass drift with the hammer. Do not attempt to remove the wheel drive shaft from the wheel hub and bearing at this time.
Remove the wheel hub and bearing from the steering knuckle by removing the three bolts coming in from the back side of the knuckle.
Of course you may have to use a hammer to loosen the bearing from the knuckle.