Hello Mud, Truck is a 1990 extended cab 4 x 4 with 22RE engine. Mechanic in Alaska said my central carrier bearing was shot. (July). I can move it by hand so I agree with him. Got the part from Cruiser Dan and I'm preparing to install. FSM says that it should be installed under no-load condition. This means frame supported with suspension at full droop? not sure as I have not done a central carrier bearing before. If you have and can advise, let me know. I might start tomorrow.
Central Carrier Bearing
- Thread starter jgranthevagrant
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First of all, I fill the rubber that supports the bearing with as much RTV Silicone as I can pump in there. I have gotten a LOT longer service life out of those bearings by doing this. My '84 Xcab truck does have a lift, OME front springs & GM 63's in the rear.
I've never read the FSM on this job. I put the front drive-shaft with the bearing on it in and tighten all of the bolts before putting the rear drive-shaft in place.
I've never read the FSM on this job. I put the front drive-shaft with the bearing on it in and tighten all of the bolts before putting the rear drive-shaft in place.
- Thread starter
- #3
Well, the bearing is over 400k in kilometres. The new one feels pretty solid. I can't see where any RTV could go even. I'm mostly concerned about getting the stake nut off, getting the old bearing off, the new one on, and the no-load requirement in the FSM.
The rubber in those bearings that I had was a hollow donut. There are a couple small air holes to allow it to flex. I would spin the bearing in that rubber piece before anything else went wrong. I've had a bearing try to die since in an RTV filled assembly and I was able to pry out the bearing itself, remove the sheet metal surrounds, and replace just the bearing. I forget the uniform part number, but at it's core it's just a typical sealed cartridge bearing available at most any bearing house. Was a whole lot less expensive to do that than to replace the whole assembly, and being that I was a broke college student at the time....
The stake nut isn't a big deal, an impact will pop it loose. The bearing is a sliding slip-fit to locational interference fit on the spud shaft, the nut and flange clamp it in place and keep the inner race from spinning on the shaft.
As to the no-load requirement in the FSM, I'm frankly baffled how that makes any difference at all. The bearing is on the front drive-shaft section, not the rear section. I loosely assemble the front section in place, then tighten the t/c flange bolts. THEN tighten the bearing support bolts. And finally install the rear shaft assembly. What the position of the suspension is would only matter during that last step.
The stake nut isn't a big deal, an impact will pop it loose. The bearing is a sliding slip-fit to locational interference fit on the spud shaft, the nut and flange clamp it in place and keep the inner race from spinning on the shaft.
As to the no-load requirement in the FSM, I'm frankly baffled how that makes any difference at all. The bearing is on the front drive-shaft section, not the rear section. I loosely assemble the front section in place, then tighten the t/c flange bolts. THEN tighten the bearing support bolts. And finally install the rear shaft assembly. What the position of the suspension is would only matter during that last step.
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- #6
Thanks for the info. Looks easier than expected. We'll see how it goes. The Tacoma part sure looks identical to mine. I wonder if they just change the numbers.
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- #8
Threw the Central carrier bearing in last weekend, between storms. Test drove tonight. Seems fine. FSM is accurate and helpful,a s was the Tacoma post. Suspension is next, unless there are more surprises. thanks for the help on Mud.