How to Remove *%##! Needle Pilot Bearing From Crankshaft?

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rehoward

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I am working on my beloved 1993 Chev K1500 with 305 V8 and am putting a new clutch in it. I have hit a snag and need some help. How the *uck do
you get the needle pilot bearing out of the crankshaft? I borrowed a pilot bearing puller from Action Auto and it would not grab the bearing.
I can see that the tool is designed for an oilite type bronze bushing and it will not work with the needle bearing that is in the crank. I have
read about packing the bearing with bread or grease or old wet newspaper and driving it out with a close fitting drift via hydraulic pressure. But
this is a needle bearing and not a solid bushing so I think whatever gunk I stuff in there will just squirt out.

So what are my options? Is there a tool just for these needle type bearings? I want to be clear, this is not a complete bearing with an inner
and outer race. It is not a sealed bearing. It is just an outer race with needles and that is it. What do I do? What was Chevy thinking?

Randy
 

GoToGuy

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I used a heavy grease and rod that fitted as close the inner diameter as possible. Pack the hole and start the hammer hydraulic pressure. Yeah it sounds goofy, and sketchy but it based on real science. Liquids don't compress, creating the pressure to overcome the bearing race resistance. It's not instantaneous and it's messy , so what it'll get the job done.
Or pay big bucks for some really fancy blind hole extractors you'll use , once?
What do you have to loose trying it, time ? It yours not billed hours. Grease? No.2 is cheap. Or take it to the dealer.
 

CrustyJunker

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Agreed with above! I used grease on my last engine, and I think I actually used bread and a bolt on my old 305 when I was young. Pack it in little at a time until all the air space is gone, hammer in your rod/bolt of choice, and it should force out the bearing hydraulically.

Edit: To clarify, both times were on needle bearings on TBI engines...Trust us, it'll work. The bolt I used - I just rounded a hex head on a bench grinder until it fit the ID of the bearing.
 
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movietvet

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As has been said by @GoToGuy and @CrustyJunker, the grease or bread trick will work. It works best to use a tight fit rod and really slam the pressure with a heavy hammer hit. What you "think" will not work has worked many many many times. Don't over think it. The fast hard slam of the rod with a hammer, will override the pressure leakage you worry about. The key, IMO, is a tight fit rod. The correct size pilot bushing alignment tool, for installing the clutch disc, is what I use.
 

rehoward

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I machined a tight fitting rod made of aluminum stock, pumped grease into the bore of the needle bearing, inserted the rod, and whacked it with a BFH. Had to refill the grease three times but it worked and wasn't all that messy. Yes, the grease leaked through the needle bearing but the rapid impact still pushed the bearing out. Easy, and surprising to me that it worked so well.

Randy.
 

movietvet

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When you install the new one, do not use that BFH.
 
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