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use of oil in pilot bearing installation?

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Old 02-11-2007, 08:47 PM
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Default use of oil in pilot bearing installation?

Ok, so I am trying to install my pilot bearing and it is taking forever to get it hammered in and I am concearned about its condition. Is it wise to use oil around the bearing to get it to slide into the crank???


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Old 02-11-2007, 10:41 PM
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bump, anyone?
Old 02-11-2007, 11:26 PM
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I don't think it would be a big deal. Try throwing it in the freezer for a little bit to shrink it some, lightly oil it, then give it a shot. Never replaced mine, so these are just suggestions of what I'd try in your situation.
Old 02-12-2007, 07:55 AM
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anybody else? sorry for all the bumps but need to finish this asap
Old 02-12-2007, 11:54 AM
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I would be concerned why you have to hammer it in so hard. I have changed a couple and most just tapped in using a socket with the correct size. My biggest problem is always getting it out.
Old 02-12-2007, 12:02 PM
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It was a complete pain to get it in. The only thing I can think of is the fact that the crank was cold and it might have been warm. It was like having to put on the harmonic in how hard it was to get in the crank.
Old 02-12-2007, 12:46 PM
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su_maverick....can you respond to my pm.......
Old 02-12-2007, 12:48 PM
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Hmmmmmm...never had a problem getting a pilot bearing to slide in place just using a socket and a hammer. I'm sure a *light* oiling would help...just wouldn't over do it.
Old 02-12-2007, 12:49 PM
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could it be the temprature that is causing it to not fit correctly?
Old 02-12-2007, 04:24 PM
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Originally Posted by su_maverick
could it be the temprature that is causing it to not fit correctly?
It could be, but I'd think the temperature difference would have to be something more significant than just the ambient air temp (as in it would have to be heated by something other than the environment, like a heat gun or something).
Old 02-12-2007, 08:18 PM
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you should always use a little bit of oil when driving a press fit metal to metal anything together. And a easy way to get bushings out is to use grease pack it in the hole and use a drift of some sort that fits the hole and just keep packing grease you have to be carefull though if you have an aftermarket crank it most likely has a plug in the back of the crank so this method won't work it will just push the plug thru the crank.
Old 02-12-2007, 09:28 PM
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Originally Posted by N2O-ARMD
you should always use a little bit of oil when driving a press fit metal to metal anything together. And a easy way to get bushings out is to use grease pack it in the hole and use a drift of some sort that fits the hole and just keep packing grease you have to be carefull though if you have an aftermarket crank it most likely has a plug in the back of the crank so this method won't work it will just push the plug thru the crank.
The stock LS1 has this plug, DO NOT USE THIS METHOD ON ANY LSx motor.

also, my pilot bearing took pounding on a socket for 30 mins to get it to go in. I wonder if I ruined it and it is now causing my input shaft to drag on it.
Old 02-12-2007, 10:25 PM
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I am freezing the bearing right now and will be using a tiny bit of low weight oil to get it in. Not much, just very little.
Old 02-13-2007, 01:04 AM
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Ya mine just tapped right in the with help of a socket. I would stick it in the freezer and it should go in. Make sure if you have been hammering on it that it isnt messed up or id replace it
Old 02-13-2007, 09:20 AM
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When you guys talk about 'tapping' it in. How much force would you say you are using on it? When I hear tap I am thinking about 25-50% with a few good swings in.. When I tried to install the old one (picked up a new one last night) it was like trying to install the harmonic balancer again.
Old 02-13-2007, 02:31 PM
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i used a little tranny fluid to help. it took some good whacks with a similarly sized socket and hammer to get it in, but nothing eccessive.
Old 02-13-2007, 02:44 PM
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I really appreciate all the help guys
Old 02-19-2007, 03:56 PM
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PM sent
Old 02-19-2007, 05:33 PM
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Should tap right in. What size socker are you using? Make sure the socket is touching the outer ring of the bearing. If it doesn't fit snug, and you end up hitting it in the center/anywhere other that the outer ring you need a new pilot bearing.

Did you make any gouges in the crankshaft itself? Possibly by hammering the bearing at a weird angle?

I've never used oil installing them. Just use a 30oz. steel hammer and I believe a 22mm deep socket. Could be wrong on the size, but that's off the top of my head.

I've done well over a hundred... Make sure you haven't damaged the bearing at all.



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