3.0 Engine Cam Bearing Replacement - Ranger-Forums - The Ultimate Ford Ranger Resource


2.9L & 3.0L V6 Tech General discussion of 2.9L and 3.0L V6 Ford Ranger engines.

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Old 04-16-2016
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3.0 Engine Cam Bearing Replacement

I am overhauling my 1991 Ranger 3.0 engine. Got an engine overhaul kit from Rockauto. Am working with a local machine shop for some of the things I cannot do - however I do have a machine shop so I can do things like grind the valves on my lathe and tool post grinder.

Looking at the cam bearings, I would like to replace them but the 3.0 engine has cam bearings very hard to get to. I am doing my homework on this but was wondering if anyone else has replaced cam bearing on a 3.0 engine?
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Old 04-17-2016
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Yes you can replace cam bearings, knock the plug out the rear...you will need a 5/16th or smaller threaded rod...knock out the old ones but dont scratch the casting...large washer behind the new bearing...line up the oil holes and pull it in it in with washer and nut at the other end....done a few like this...Brit cars
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Old 04-17-2016
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Nice. I saw a YouTube video on that. The two center bearings are smaller diameter than the outside bearings. So it looks like you take them out two on each side of the engine because you can't get to the bearings from under the engine. My machinist told me he remembered that the bearings were harder than most engines to work with because they were buried in the engine. I may need an expanding tool for pulling out the bearings instead of washers because the only way to get on the other side of the bearing to pull them is to go through the bearing. But I can use the washer technique to pull the new bearings in.
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Old 04-17-2016
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Well you have to be able to get the Cam in from one end or the other so I can't see smaller bearings in the center or cam wouldn't slide thru.
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Old 04-17-2016
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The two inner cam bearings have a smaller outside diameter. That way they can be installed without getting hung up while going through the area where the outside bearings seat. There is no way to get the inside bearings in place except through the holes where the outside bearings are seated. That is what makes replacing cam bearings on this engine different.
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