What size engine did you have? The 258 certainly isn't like that.

Here's what a typical traditional flywheel and pilot bushing assembly
looks like (not a Jeep flywheel, but close enough for illustration
purposes):
<URL:http://www.240sx.org/links/installs/flywheel/removeflywheel.JPG>

And here's what a traditional clutch assembly looks like in exploded view:
<URL:http://www.ramclutches.com/Clutch%20U/Clutch%20U%20images/clutch_system.jpg>
Notice how much smaller the bushing is that the hole in the flywheel.
For the 232/258 it sets into a recess in the end of the crank. Some
models have a stepped hole in the crank that will accept either of two
different sized bushings.


Greg wrote:
> My 81 CJ was exactly as you discribe, hole in the middle of flywheel,
> bearing in that.
>
> "Carl Saiyed" <carlsaiyed@REMOVEhotmail.com> wrote in message
> news:42eedae3_1@newsfeed.slurp.net...
>
>>Mike -
>>
>>I don't understand how the bearing could be in the end of the crank. The
>>new
>>bearing supplied with my kit seems to be an exact match of the bearing
>>that
>>is in the flywheel. I currently have the flywheel removed, and it was
>>machined.
>>
>>Thanks to all for the help so far.
>>
>>Carl
>>
>>
>>"Mike Romain" <romainm@sympatico.ca> wrote in message
>>news:42EE1920.14E028CF@sympatico.ca...
>>
>>>You are going to need a puller for the pilot bearing and it is in the
>>>center of the works or in the end of the crank. Don't miss the oiled
>>>pad or you will be doing the job again in a short time.
>>>
>>>You should remove the flywheel and have it turned so it isn't grabby.
>>>Once you have the flywheel out, you will see the big center hole where
>>>the crank fits with the pilot bearing still sitting there in the end of
>>>the engine.
>>>
>>>Mike
>>>86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
>>>88 Cherokee 235 BFG AT's
>>>
>>>Carl Saiyed wrote:
>>>
>>>>The trans is laying on the floor under the jeep, the surfaced flywheel
>>
>>is on
>>
>>>>the bench, the clutch and bearings are in the mail. The driveshafts and
>>>>exhaust are on the floor, the carpet and access panels are out, and my
>>
>>head
>>
>>>>hurts.
>>>>
>>>>I've been working 12-14hr days so I wont have any time to slam it all
>>
>>back
>>
>>>>together untill saturday. Still confused how to install the pilot
>>
>>bearing
>>
>>>>and throwout bearing. What I'm guessing is the pilot bearing is in the
>>>>flywheel, not the crank. Also unsure how I'm going to actually put it
>>
>>the
>>
>>>>trans up there.
>>>>
>>>>The re-install of the clutch seems straightforward. Bolt the flywheel
>>
>>back
>>
>>>>on, torque to 15lbs, 30lbs, and 50lbs. Install the clutch disk and
>>
>>pressure
>>
>>>>plate, torque to 23lbs. Pull out the alignment tool, get a good workout
>>>>getting the trans and t-case assembly back up there.
>>>>
>>>>still interested in that drink, Robb? :-D
>>>>
>>>>Carl
>>>>
>>>>"Robb S via CarKB.com" <forum@CarKB.com> wrote in message
>>>>news:522B679C544DA@CarKB.com...
>>>>
>>>>>SO Carl, how'd it all turn out?
>>>>>
>>>>>Robb S wrote:
>>>>>
>>>>>>LOL
>>>>>>
>>>>>>
>>>>>>> Let's hope.
>>>>>>>
>>>>>>>
>>>>>>>>but the Crank is still in the middle of the flywheel ;)
>>>>>
>>>>>
>>>>>--
>>>>>Message posted via http://www.carkb.com
>>
>>
>
>

 

Exactly as you and Mike have described, the pilot bearing is close
to the size of the flywheel, but the bearing is always part of the
crank. It would be silly for an engineer to try to center, centers on
bolts!
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Lee Ayrton wrote:
>
> What size engine did you have? The 258 certainly isn't like that.
>
> Here's what a typical traditional flywheel and pilot bushing assembly
> looks like (not a Jeep flywheel, but close enough for illustration
> purposes):
> <URL:http://www.240sx.org/links/installs/flywheel/removeflywheel.JPG>
>
> And here's what a traditional clutch assembly looks like in exploded view:
> <URL:http://www.ramclutches.com/Clutch%20U/Clutch%20U%20images/clutch_system.jpg>
> Notice how much smaller the bushing is that the hole in the flywheel.
> For the 232/258 it sets into a recess in the end of the crank. Some
> models have a stepped hole in the crank that will accept either of two
> different sized bushings.

 

Exactly as you and Mike have described, the pilot bearing is close
to the size of the flywheel, but the bearing is always part of the
crank. It would be silly for an engineer to try to center, centers on
bolts!
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Lee Ayrton wrote:
>
> What size engine did you have? The 258 certainly isn't like that.
>
> Here's what a typical traditional flywheel and pilot bushing assembly
> looks like (not a Jeep flywheel, but close enough for illustration
> purposes):
> <URL:http://www.240sx.org/links/installs/flywheel/removeflywheel.JPG>
>
> And here's what a traditional clutch assembly looks like in exploded view:
> <URL:http://www.ramclutches.com/Clutch%20U/Clutch%20U%20images/clutch_system.jpg>
> Notice how much smaller the bushing is that the hole in the flywheel.
> For the 232/258 it sets into a recess in the end of the crank. Some
> models have a stepped hole in the crank that will accept either of two
> different sized bushings.

 

Exactly as you and Mike have described, the pilot bearing is close
to the size of the flywheel, but the bearing is always part of the
crank. It would be silly for an engineer to try to center, centers on
bolts!
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Lee Ayrton wrote:
>
> What size engine did you have? The 258 certainly isn't like that.
>
> Here's what a typical traditional flywheel and pilot bushing assembly
> looks like (not a Jeep flywheel, but close enough for illustration
> purposes):
> <URL:http://www.240sx.org/links/installs/flywheel/removeflywheel.JPG>
>
> And here's what a traditional clutch assembly looks like in exploded view:
> <URL:http://www.ramclutches.com/Clutch%20U/Clutch%20U%20images/clutch_system.jpg>
> Notice how much smaller the bushing is that the hole in the flywheel.
> For the 232/258 it sets into a recess in the end of the crank. Some
> models have a stepped hole in the crank that will accept either of two
> different sized bushings.

 

Exactly as you and Mike have described, the pilot bearing is close
to the size of the flywheel, but the bearing is always part of the
crank. It would be silly for an engineer to try to center, centers on
bolts!
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Lee Ayrton wrote:
>
> What size engine did you have? The 258 certainly isn't like that.
>
> Here's what a typical traditional flywheel and pilot bushing assembly
> looks like (not a Jeep flywheel, but close enough for illustration
> purposes):
> <URL:http://www.240sx.org/links/installs/flywheel/removeflywheel.JPG>
>
> And here's what a traditional clutch assembly looks like in exploded view:
> <URL:http://www.ramclutches.com/Clutch%20U/Clutch%20U%20images/clutch_system.jpg>
> Notice how much smaller the bushing is that the hole in the flywheel.
> For the 232/258 it sets into a recess in the end of the crank. Some
> models have a stepped hole in the crank that will accept either of two
> different sized bushings.

 

Where it not that one previous poster said that his flywheel was off I'd
say that they've been looking at the end of the crank and thinking it
was part of the flywheel. It is an easy enough mistake to make, there's
no good demarcation between the two until you loosen the bolts up a bit.


L.W.(Bill) ------ III wrote:
> Exactly as you and Mike have described, the pilot bearing is close
> to the size of the flywheel, but the bearing is always part of the
> crank. It would be silly for an engineer to try to center, centers on
> bolts!
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Lee Ayrton wrote:
>
>>What size engine did you have? The 258 certainly isn't like that.
>>
>>Here's what a typical traditional flywheel and pilot bushing assembly
>>looks like (not a Jeep flywheel, but close enough for illustration
>>purposes):
>><URL:http://www.240sx.org/links/installs/flywheel/removeflywheel.JPG>
>>
>>And here's what a traditional clutch assembly looks like in exploded view:
>><URL:http://www.ramclutches.com/Clutch%20U/Clutch%20U%20images/clutch_system.jpg>
>>Notice how much smaller the bushing is that the hole in the flywheel.
>>For the 232/258 it sets into a recess in the end of the crank. Some
>>models have a stepped hole in the crank that will accept either of two
>>different sized bushings.

 

Where it not that one previous poster said that his flywheel was off I'd
say that they've been looking at the end of the crank and thinking it
was part of the flywheel. It is an easy enough mistake to make, there's
no good demarcation between the two until you loosen the bolts up a bit.


L.W.(Bill) ------ III wrote:
> Exactly as you and Mike have described, the pilot bearing is close
> to the size of the flywheel, but the bearing is always part of the
> crank. It would be silly for an engineer to try to center, centers on
> bolts!
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Lee Ayrton wrote:
>
>>What size engine did you have? The 258 certainly isn't like that.
>>
>>Here's what a typical traditional flywheel and pilot bushing assembly
>>looks like (not a Jeep flywheel, but close enough for illustration
>>purposes):
>><URL:http://www.240sx.org/links/installs/flywheel/removeflywheel.JPG>
>>
>>And here's what a traditional clutch assembly looks like in exploded view:
>><URL:http://www.ramclutches.com/Clutch%20U/Clutch%20U%20images/clutch_system.jpg>
>>Notice how much smaller the bushing is that the hole in the flywheel.
>>For the 232/258 it sets into a recess in the end of the crank. Some
>>models have a stepped hole in the crank that will accept either of two
>>different sized bushings.

 

Where it not that one previous poster said that his flywheel was off I'd
say that they've been looking at the end of the crank and thinking it
was part of the flywheel. It is an easy enough mistake to make, there's
no good demarcation between the two until you loosen the bolts up a bit.


L.W.(Bill) ------ III wrote:
> Exactly as you and Mike have described, the pilot bearing is close
> to the size of the flywheel, but the bearing is always part of the
> crank. It would be silly for an engineer to try to center, centers on
> bolts!
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Lee Ayrton wrote:
>
>>What size engine did you have? The 258 certainly isn't like that.
>>
>>Here's what a typical traditional flywheel and pilot bushing assembly
>>looks like (not a Jeep flywheel, but close enough for illustration
>>purposes):
>><URL:http://www.240sx.org/links/installs/flywheel/removeflywheel.JPG>
>>
>>And here's what a traditional clutch assembly looks like in exploded view:
>><URL:http://www.ramclutches.com/Clutch%20U/Clutch%20U%20images/clutch_system.jpg>
>>Notice how much smaller the bushing is that the hole in the flywheel.
>>For the 232/258 it sets into a recess in the end of the crank. Some
>>models have a stepped hole in the crank that will accept either of two
>>different sized bushings.

 

Where it not that one previous poster said that his flywheel was off I'd
say that they've been looking at the end of the crank and thinking it
was part of the flywheel. It is an easy enough mistake to make, there's
no good demarcation between the two until you loosen the bolts up a bit.


L.W.(Bill) ------ III wrote:
> Exactly as you and Mike have described, the pilot bearing is close
> to the size of the flywheel, but the bearing is always part of the
> crank. It would be silly for an engineer to try to center, centers on
> bolts!
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Lee Ayrton wrote:
>
>>What size engine did you have? The 258 certainly isn't like that.
>>
>>Here's what a typical traditional flywheel and pilot bushing assembly
>>looks like (not a Jeep flywheel, but close enough for illustration
>>purposes):
>><URL:http://www.240sx.org/links/installs/flywheel/removeflywheel.JPG>
>>
>>And here's what a traditional clutch assembly looks like in exploded view:
>><URL:http://www.ramclutches.com/Clutch%20U/Clutch%20U%20images/clutch_system.jpg>
>>Notice how much smaller the bushing is that the hole in the flywheel.
>>For the 232/258 it sets into a recess in the end of the crank. Some
>>models have a stepped hole in the crank that will accept either of two
>>different sized bushings.

 

OK guys, I am completely confused now. There appears to be a a provision in
the back of the crank to accomodate a raised casting in the flywheel that
the pilot bearing sits in. Here are some pics

http://www.geocities.com/carlsaiyed/...l/flywheel.jpg
This is the face of the flywheel that I had machined. The pilot bearing has
an arrow.

http://www.geocities.com/carlsaiyed/...el/flyrear.jpg
This is the rear (engine side) of the flywheel, which shows the rear of the
pilot bearing and the raised casting on the flywheel.

http://www.geocities.com/carlsaiyed/flywheel/pilot.jpg
This is a closeup of the raised casting in the rear (engine side) of the
flywheel and the pilot bearing.

http://www.geocities.com/carlsaiyed/flywheel/engine.jpg
This is the rear of the engine, which shows the six holes for the flywheel
bolts, and the provision for the raised casting.

http://www.geocities.com/carlsaiyed/flywheel/crank.jpg
This is a closeup of the provision for the raised casting on the flywheel.

Am I right that this bearing is the pilot bearing?

Looking back at the thread, I think I see the problem. I have the 2.5L 4
banger, not the 258 or 4.0.

Carl


"Mike Romain" <romainm@sympatico.ca> wrote in message
news:42EF856A.E2D6C361@sympatico.ca...
> Ok.... I am missing something here or someone is..... I have had an 86
> engine apart, an 89, a 91 and my current engine is a 78.
>
> All of these engines have a flywheel bolted onto the end of the crank.
> The hole in the flywheel is about 4" big with the end of the crank
> sitting in this hole. In the crank there is a hole for the pilot
> bushing (CJ's) or bearing (YJ's).
>
> When I take this flywheel and ring gear off, I have a 4" hole in it with
> 5 bolts in an offset pattern.
>
> When I took the cranks in to get them turned, the shops pulled out the
> old pilot bearing for me so I could put a new one into the end of the
> crank. I did not take the flywheels in with me.
>
> Here is a drawing (A Bill H link) exactly the same all the 258 engines I
> have worked on showing the pilot bushing as part number 1.043-1. This
> also shows it as a crank part with a perfect example of 'all' the
> flywheels I have ever seen on a 258.
>
> http://amccf.com/tech/new/SIX-block_crank_cam.jpg
>
> Mike
>
> Greg wrote:
> >
> > My 81 CJ was exactly as you discribe, hole in the middle of flywheel,
> > bearing in that.
> >
> > "Carl Saiyed" <carlsaiyed@REMOVEhotmail.com> wrote in message
> > news:42eedae3_1@newsfeed.slurp.net...
> > > Mike -
> > >
> > > I don't understand how the bearing could be in the end of the crank.
The
> > > new
> > > bearing supplied with my kit seems to be an exact match of the bearing
> > > that
> > > is in the flywheel. I currently have the flywheel removed, and it was
> > > machined.
> > >
> > > Thanks to all for the help so far.
> > >
> > > Carl
> > >
> > >
> > > "Mike Romain" <romainm@sympatico.ca> wrote in message
> > > news:42EE1920.14E028CF@sympatico.ca...
> > >> You are going to need a puller for the pilot bearing and it is in the
> > >> center of the works or in the end of the crank. Don't miss the oiled
> > >> pad or you will be doing the job again in a short time.
> > >>
> > >> You should remove the flywheel and have it turned so it isn't grabby.
> > >> Once you have the flywheel out, you will see the big center hole
where
> > >> the crank fits with the pilot bearing still sitting there in the end
of
> > >> the engine.
> > >>
> > >> Mike
> > >> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > >> 88 Cherokee 235 BFG AT's
> > >>
> > >> Carl Saiyed wrote:
> > >> >
> > >> > The trans is laying on the floor under the jeep, the surfaced
flywheel
> > > is on
> > >> > the bench, the clutch and bearings are in the mail. The driveshafts
and
> > >> > exhaust are on the floor, the carpet and access panels are out, and
my
> > > head
> > >> > hurts.
> > >> >
> > >> > I've been working 12-14hr days so I wont have any time to slam it
all
> > > back
> > >> > together untill saturday. Still confused how to install the pilot
> > > bearing
> > >> > and throwout bearing. What I'm guessing is the pilot bearing is in
the
> > >> > flywheel, not the crank. Also unsure how I'm going to actually put
it
> > > the
> > >> > trans up there.
> > >> >
> > >> > The re-install of the clutch seems straightforward. Bolt the
flywheel
> > > back
> > >> > on, torque to 15lbs, 30lbs, and 50lbs. Install the clutch disk and
> > > pressure
> > >> > plate, torque to 23lbs. Pull out the alignment tool, get a good
workout
> > >> > getting the trans and t-case assembly back up there.
> > >> >
> > >> > still interested in that drink, Robb? :-D
> > >> >
> > >> > Carl
> > >> >
> > >> > "Robb S via CarKB.com" <forum@CarKB.com> wrote in message
> > >> > news:522B679C544DA@CarKB.com...
> > >> > >
> > >> > > SO Carl, how'd it all turn out?
> > >> > >
> > >> > > Robb S wrote:
> > >> > > >LOL
> > >> > > >
> > >> > > >> Let's hope.
> > >> > > >>
> > >> > > >>> but the Crank is still in the middle of the flywheel ;)
> > >> > >
> > >> > >
> > >> > > --
> > >> > > Message posted via http://www.carkb.com
> > >
> > >