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type IV crankshaft needle bearing
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timatt
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PostPosted: Thu Jun 09, 2011 8:10 am    Post subject: type IV crankshaft needle bearing Reply with quote

Can someone tell me what is involved with removal of the transmission input shaft needle bearing from the crankshaft? Is a puller required? I tried to pull it out with my finger with no luck.

Thanks

Tim
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aeromech
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PostPosted: Thu Jun 09, 2011 8:17 am    Post subject: Reply with quote

Something like a slide hammer with a hooked end would work.
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rockerarm
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PostPosted: Thu Jun 09, 2011 8:25 am    Post subject: Reply with quote

Tool stores sell a specific pilot bearing puller for this. But a sweet trick if the bearing hasn't fallen apart or gotten too hot is to pack the entire area behind the bearing with a heavy grease. Then use a mainshaft/clutch centering tool and insert into bearing. Tap with a hammer and if it is not stuck too tight, it will come out. Not sure if those plastic clutch centering tool will work.
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timatt
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PostPosted: Fri Jun 10, 2011 7:52 am    Post subject: It Worked Reply with quote

I've heard about using grease to remove a starter bushing for years but never had the opportunity to try it. I tried it last night for the pilot bearing and it worked. I cut a piece of aluminum rod on the lathe to fit the pilot busing and Bingo; came out after a few bangs with a 5 lb hammer.

Tim
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rockerarm
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PostPosted: Fri Jun 10, 2011 7:55 am    Post subject: Reply with quote

YEAH !! Simply amazing that physics stuff! Have a good one, brother.
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jpeters
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PostPosted: Wed Jun 19, 2013 5:27 am    Post subject: Reply with quote

Any other tips on removing the needle bearing? I tried the grease trick last night and I don't think enough space exists behind the bearing to allow the grease to push it out. Maybe a thicker grease would work.
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jpeters
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PostPosted: Wed Jun 19, 2013 7:02 am    Post subject: Reply with quote

I searched "pilot bearing" and was able to find some additional ideas. Looks like I'll be trying the chisel, then the dremel if all else fails.
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Wildthings
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PostPosted: Wed Jun 19, 2013 8:59 am    Post subject: Reply with quote

Buy or rent a pilot bearing removal tool. If you try a chisel you will find out about the quality of steel used to make bearings.
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jpeters
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PostPosted: Wed Jun 19, 2013 9:06 am    Post subject: Reply with quote

One guy even mentioned putting shavings from a bar of soap behind the bearing instead of using grease and then pounding in the dowel in order to push out the bearing. I actually think that might work. I don't think the grease was working on mine because the grease was too light.
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vwmaniaman
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PostPosted: Wed Jun 19, 2013 9:39 am    Post subject: Reply with quote

I put a long screw with 2 washers thru the bearing, put a nut on the outside threaded end and used a crow bar. Out it came. Cheapo instant puller. Put PB Blaster all around it first though and wait 15-20 minutes.
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PostPosted: Wed Jun 19, 2013 9:42 am    Post subject: Reply with quote

Forgot to say the screw is small compared to the center hole of the washers. They are a sloppy fit on the screw and edges grab the inside edge of the bearing.
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aeromech
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PostPosted: Wed Jun 19, 2013 9:54 am    Post subject: Reply with quote

Look, maybe you guys don't know what a slide hammer is so here:

Image may have been reduced in size. Click image to view fullscreen.

I'm not saying that you need to go buy a special tool like this but just look at it and you should understand how it works. All you need to do is grab the bearing on the back side with a metal hook and then whack it out of there using a heavy object. You can use a 2 pound hammer head, a hook, and connect them with wire or cable.
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Boeing 727,737-200-300-400,757,767
Airbus A319,320,321
DC9/MD80
BAe146
Fokker F28/F100
VW type 1 1962,63,65,69,72
VW Type 2 1971 (2 ea.) 1978
VW Jetta
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