[DeTomaso] Removing Pilot Bearing - Partial Victory and Update
John Taphorn
johnftaphorn at gmail.com
Wed Jul 26 20:01:03 EDT 2023
Mike
I've used an air driven hole saw. Harbor Freight has them pretty
inexpensive. You will not need to saw though the hole outer shell.
Eventually, you will weaken it enough that punching a sharp all at the cut
will break it and it will pop loose.
Easy peasy
Sometimes a needle bearing is a superior solution. Eg, when an alignment
mismatch occurs between crank and input shaft.
JT
On Tue, Jul 25, 2023 at 6:59 PM Charles Engles <cengles at cox.net> wrote:
> Dear Mike,
>
> From this thread, the take home lessons are:
>
> 1) The pilot bearings are more problematic and harder to remove than the
> oilite pilot bushing
> 2) If you have a really good pilot bearing puller or modify a lesser
> pilot
> bearing puller, then they can be removed without much fuss--if you're lucky
> 3) if a puller fails then the options are delicate dremel surgery a la
> DeRyke or ocyacetylene torch a la Forest
> 4) No wonder Will found the metaphysics of copious profanity helpful
> 5) I am inclined to leave a functioning pilot bearing alone and not
> change
> it considering the challenges of removal.
>
>
> Good luck, Chuck Engles
>
>
>
> -----Original Message-----
> From: DeTomaso [mailto:detomaso-bounces at server.detomasolist.com] On Behalf
> Of Mike & Elizabeth
> Sent: Tuesday, July 25, 2023 3:21 PM
> To: detomaso at server.detomasolist.com
> Subject: [DeTomaso] Removing Pilot Bearing - Partial Victory and Update
>
> Well, I was able to get the bearing puller into my pilot bearing and with
> the slide hammer, managed to pull the center of the bearing out, but the
> race is still firmly planted. I've tried to remove the race with the
> puller
> but it keeps popping out and is scoring inside of the race and rounding the
> inner edge where I'm trying to get it to hold on. There is such a narrow
> lip on the race on the inside, the puller just deflects enough to let go
> and
> ends up rounding the edge and scoring the inside of the barrel.
>
> Not sure what to do at this point. If I need to file the inner edge of the
> puller to give it a flat grip on the inner lip, I'll have to buy my own.
> Trying to drill it out would take multiple large and I'm sure very
> expensive
> bit to drill the hardened steel as the hole is now 0.92". I could try
> threading with a 18/16" tap but as said in a previous response very
> difficult with in the hardened steel.
>
> In the meantime I'm continuing to flood both ends of the race with
> penetrating oil in hopes that will help get it free, but I'm afraid I may
> have used up my bearing puller chances.
>
> Concerned in Covington:
> Mike
>
> _______________________________________________
>
>
> Detomaso Email List is not managed by POCA
> Posted emails must not exceed 1.5 Megabytes
> DeTomaso mailing list
> DeTomaso at server.detomasolist.com
> http://server.detomasolist.com/mailman/listinfo/detomaso
>
> To manage your subscription (change email address, unsubscribe, etc.) use
> the links above.
>
> Members who post to this list grant license to the list to forward any
> message posted here to all past, current, or future members of the list.
> They also grant the list owner permission to maintain an archive or approve
> the archiving of list messages.
>
> _______________________________________________
>
>
> Detomaso Email List is not managed by POCA
> Posted emails must not exceed 1.5 Megabytes
> DeTomaso mailing list
> DeTomaso at server.detomasolist.com
> http://server.detomasolist.com/mailman/listinfo/detomaso
>
> To manage your subscription (change email address, unsubscribe, etc.) use
> the links above.
>
> Members who post to this list grant license to the list to forward any
> message posted here to all past, current, or future members of the list.
> They also grant the list owner permission to maintain an archive or approve
> the archiving of list messages.
>
-------------- next part --------------
Mike
I've used an air driven hole saw. Harbor Freight has them pretty
inexpensive. You will not need to saw though the hole outer shell.
Eventually, you will weaken it enough that punching a sharp all at the
cut will break it and it will pop loose.
Easy peasy
Sometimes a needle bearing is a superior solution. Eg, when an
alignment mismatch occurs between crank and input shaft.
JT
On Tue, Jul 25, 2023 at 6:59 PM Charles Engles <[1]cengles at cox.net>
wrote:
Dear Mike,
A A A A A A From this thread, the take home lessons are:
1)A A The pilot bearings are more problematic and harder to remove
than the
oilite pilot bushing
2)A A If you have a really good pilot bearing puller or modify a
lesser pilot
bearing puller, then they can be removed without much fuss--if
you're lucky
3)A if a puller fails then the options are delicate dremel surgery
a la
DeRyke or ocyacetylene torch a la Forest
4)A A No wonder Will found the metaphysics of copious profanity
helpful
5)A A I am inclined to leave a functioning pilot bearing alone and
not change
it considering the challenges of removal.
A A A A A A A A A Good luck,A A Chuck Engles
-----Original Message-----
From: DeTomaso [mailto:[2]detomaso-bounces at server.detomasolist.com]
On Behalf
Of Mike & Elizabeth
Sent: Tuesday, July 25, 2023 3:21 PM
To: [3]detomaso at server.detomasolist.com
Subject: [DeTomaso] Removing Pilot Bearing - Partial Victory and
Update
Well, I was able to get the bearing puller into my pilot bearing and
with
the slide hammer, managed to pull the center of the bearing out, but
the
race is still firmly planted.A I've tried to remove the race with
the puller
but it keeps popping out and is scoring inside of the race and
rounding the
inner edge where I'm trying to get it to hold on.A There is such a
narrow
lip on the race on the inside, the puller just deflects enough to
let go and
ends up rounding the edge and scoring the inside of the barrel.
Not sure what to do at this point.A If I need to file the inner
edge of the
puller to give it a flat grip on the inner lip, I'll have to buy my
own.
Trying to drill it out would take multiple large and I'm sure very
expensive
bit to drill the hardened steel as the hole is now 0.92".A I could
try
threading with a 18/16" tap but as said in a previous response very
difficult with in the hardened steel.
In the meantime I'm continuing to flood both ends of the race with
penetrating oil in hopes that will help get it free, but I'm afraid
I may
have used up my bearing puller chances.
Concerned in Covington:
Mike
_______________________________________________
Detomaso Email List is not managed by POCA
Posted emails must not exceed 1.5 Megabytes
DeTomaso mailing list
[4]DeTomaso at server.detomasolist.com
[5]http://server.detomasolist.com/mailman/listinfo/detomaso
To manage your subscription (change email address, unsubscribe,
etc.) use
the links above.
Members who post to this list grant license to the list to forward
any
message posted here to all past, current, or future members of the
list.
They also grant the list owner permission to maintain an archive or
approve
the archiving of list messages.
_______________________________________________
Detomaso Email List is not managed by POCA
Posted emails must not exceed 1.5 Megabytes
DeTomaso mailing list
[6]DeTomaso at server.detomasolist.com
[7]http://server.detomasolist.com/mailman/listinfo/detomaso
To manage your subscription (change email address, unsubscribe,
etc.) use the links above.
Members who post to this list grant license to the list to forward
any message posted here to all past, current, or future members of
the list. They also grant the list owner permission to maintain an
archive or approve the archiving of list messages.
References
1. mailto:cengles at cox.net
2. mailto:detomaso-bounces at server.detomasolist.com
3. mailto:detomaso at server.detomasolist.com
4. mailto:DeTomaso at server.detomasolist.com
5. http://server.detomasolist.com/mailman/listinfo/detomaso
6. mailto:DeTomaso at server.detomasolist.com
7. http://server.detomasolist.com/mailman/listinfo/detomaso
More information about the DeTomaso
mailing list