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Part number for the manual tranny pilot bearing
http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=5&t=53224
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Author:  tonycrd [ Tue Jun 01, 2010 7:30 am ]
Post subject:  Part number for the manual tranny pilot bearing

Hi all, going to replace my clutch and flywheel. Got those parts ordered, but I cannot find a part number for the pilot bearing in the crankshaft...(I cannot even find a pilot bearing in the '02 or '05 parts list ..)

Can anyone help me out?

Author:  Sir Sam [ Tue Jun 01, 2010 12:47 pm ]
Post subject:  Re: Part number for the manual tranny pilot bearing

tonycrd wrote:
Hi all, going to replace my clutch and flywheel. Got those parts, but I cannot find a part number for the pilot bearing in the crankshaft...(I cannot even find a pilot bearing in the '02 or '05 parts list ..)

Can anyone help me out?


Do we even know if it uses one?

Author:  tonycrd [ Tue Jun 01, 2010 3:40 pm ]
Post subject:  Re: Part number for the manual tranny pilot bearing

Sam, I was hoping you knew that. :juggle:

Looking at this I am sure we do use something...

Image

Author:  tonycrd [ Tue Jun 01, 2010 5:24 pm ]
Post subject:  Re: Part number for the manual tranny pilot bearing

I just remembered there was a thread from a guy in SA who pulled his gearbox because of a busted pressure bearing:

daxiet wrote:
Oh, can't get the pilot bearing separately, you need to buy the flywheel, they come as a set (wow, some brainie dude must have thought that one up). The only manufacturer who is oblivious to replacing a pilot bearing when replacing the clutch.


Image

Author:  Sir Sam [ Thu Jun 03, 2010 2:40 pm ]
Post subject:  Re: Part number for the manual tranny pilot bearing

tonycrd wrote:
Sam, I was hoping you knew that. :juggle:

Looking at this I am sure we do use something...

Image


I wish I had my stuff in a position to check it to see. Not every vehicle uses pilot bearings(though nearly all do).

Any aversion to just not replacing it? Most of the time I forgo that step as it feels pretty useless with the bronze bushings. (vs real bearings)

Author:  tonycrd [ Tue Jun 08, 2010 12:33 pm ]
Post subject:  Re: Part number for the manual tranny pilot bearing

Ok, confirmed, we do have a pilot bearing, it's a real needle bearing.

And it comes with the dual mass flywheel.....

What's a dual mass flywheel:

Image

This looks like the CRD flywheel. They forgot the pilot bearing in this pic..

I'll get some pics of the real thing later.

Author:  warp2diesel [ Tue Jun 08, 2010 4:58 pm ]
Post subject:  Re: Part number for the manual tranny pilot bearing

Tony: Stock VW TDIs also use a Dual Mass Flywheel as do some larger US built Pickups with manual transmissions. Personally I feel a Dual Mass Flywheel is a Bean Counter Engineering trick to reduce overall flywheel mass and cost by having two sections. One is fastened to the crank and the other is coupled so it can slip and dampen out the excess torsional vibrations and allow faster rev ups. Another thing that soured my taste for Dual Mass Flywheels is when my Wife's TDI Dual Mass Flywheel blew up.
For the TDI and the larger US built Pickups with manual transmissions, there are Aftermarket Suppliers who sell Heavy Duty Single Mass Flywheels. I have played around with and made custom fabricated flywheels before and they are not Rocket Science. If you want to engineer one for the CRD, send me a PM and I will give you the details on how to do it.

Author:  tonycrd [ Thu Jun 10, 2010 10:35 am ]
Post subject:  Re: Part number for the manual tranny pilot bearing

I am afraid that a solid flywheel will give to much vibrations on my 2.5...

Now that the old one is worn out (the spring within the flywheel is dead) my KJ shakes at stationairy revs...

Author:  warp2diesel [ Thu Jun 10, 2010 10:23 pm ]
Post subject:  Re: Part number for the manual tranny pilot bearing

tonycrd wrote:
I am afraid that a solid flywheel will give to much vibrations on my 2.5...

Now that the old one is worn out (the spring within the flywheel is dead) my KJ shakes at stationairy revs...


TDI owners and Large US Built Pickup owners who have had dual mass flywheel headaches would not agree. If Chrysler had used a solid flywheel, you could have resurfaced yours instead of throwing it away.
With my SunCoast converter that uses a billet front cover the flywheel mass is increased which puts less stress on the dampener springs. Also the increased flywheel mass results in a smoother running engine.
Since you live in Europe you can check out the dimensions of comparable VM engines used in industrial applications. I would bet the industrial type fly wheel will be solid and not much if any larger. But if you have no means to buy or make a solid flywheel, you are stuck with stock, too bad :banghead: :banghead:

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