[TR] [NET] Pilot bush -- TR3

Fri Nov 26 10:55:55 MST 2021

That’s an old machinist’s trick - if a bushing is too loose in a hole, knurl the outside and the peaks created by the knurling tool will take up the excessive clearance. But I doubt that that caused it to stick, because the contact area between a knurled Bush and its hole is somewhat less than a plain bush and its hole. Maybe somebody loctited it.

Mike

Sent from my iPhone

On Nov 26, 2021, at 11:43, DAVE HOGYE <dlhogye at comcast.net> wrote:

I haven't seen one that is knurled like that.  Perhaps that's what made it difficult to remove.  Glad you got it out.
Dave H.
On 11/17/2021 2:21 PM David Friedlander <forzion7 at gmail.com> wrote:

Thanks again to everyone. I divided a method for getting the pilot bush out.

See photo:

<image.png>

I didn't know it had a knurled end! No wonder it had such a grip on the crank!

Dave

On Wed, Nov 17, 2021 at 4:35 PM tritriple <tritriple at aol.com<mailto:tritriple at aol.com>> wrote:
When all else fails......dynamite!!!! Just a small charge....

Sent from my Verizon, Samsung Galaxy smartphone

-------- Original message --------
From: David Friedlander via NET <net at newenglandtriumphs.org<mailto:net at newenglandtriumphs.org>>
Date: 11/17/21 3:41 PM (GMT-05:00)
To: Sujit Roy <triumphstag at gmail.com<mailto:triumphstag at gmail.com>>
Cc: Randy and Valerie DeRuiter <deruiterville at hotmail.com<mailto:deruiterville at hotmail.com>>, tritriple at aol.com<mailto:tritriple at aol.com>, Triumphs <triumphs at autox.team.net<mailto:triumphs at autox.team.net>>, New England Triumphs <net at newenglandtriumphs.org<mailto:net at newenglandtriumphs.org>>
Subject: Re: [NET] [TR] Pilot bush -- TR3

Thank you, everyone for all your well-informed and helpful responses!

I have now removed the flywheel and delivered it to the local machine shop for resurfacing. In the meantime, the pilot bush STILL will not come out of the back of the crankshaft and I am devising plans to get it to move. I love when people say, "Do this and it will just pop out!" Riggght....  :- )

Dave

On Wed, Nov 17, 2021 at 3:28 PM Sujit Roy <triumphstag at gmail.com<mailto:triumphstag at gmail.com>> wrote:
When taking flywheel off on a Stag they recommend replacing the bolts. Not cheap.

On Wed, Nov 17, 2021, 12:03 PM Randy and Valerie DeRuiter <deruiterville at hotmail.com<mailto:deruiterville at hotmail.com>> wrote:
No problem with an impact wrench for removal.  To reinstall, here is my version of a flywheel locking tool.  I'm unsure of the Churchill Tool number, but note the calibrated on the 2x4 wedge where the flywheel teeth dug in and locked.  Just tap the wedge in the starter hole to immobilize the flywheel, torque down, and remove the highly calibrated tool for later use.

Randy

________________________________
From: Triumphs <triumphs-bounces at autox.team.net<mailto:triumphs-bounces at autox.team.net>> on behalf of David Friedlander <forzion7 at gmail.com<mailto:forzion7 at gmail.com>>
Sent: Wednesday, November 17, 2021 11:27 AM
To: tritriple at aol.com<mailto:tritriple at aol.com> <tritriple at aol.com<mailto:tritriple at aol.com>>
Cc: triumphs at autox.team.net<mailto:triumphs at autox.team.net> <triumphs at autox.team.net<mailto:triumphs at autox.team.net>>; net at newenglandtriumphs.org<mailto:net at newenglandtriumphs.org> <net at newenglandtriumphs.org<mailto:net at newenglandtriumphs.org>>
Subject: Re: [TR] [NET] Pilot bush -- TR3

Since the flywheel/crank rotate when I try to loosen the flywheel bolts with a ratchet wrench, is it permissible to use an air impact wrench to loosen them or is that not a good idea?

Dave

On Wed, Nov 17, 2021 at 10:34 AM John Bowe via NET <net at newenglandtriumphs.org<mailto:net at newenglandtriumphs.org>> wrote:
A couple ways to remove bush..... If you have a wood dowel the right size.  Fill the hole with grease and then jam dowel into bush. The pressure of grease behind bush should push it out.  Another way is to find a thread tap the right size for inside bush and wind it in. The tap will bottom out in flywheel and pull the bush out.  If you have a small seal puller with the outside facing arms that could work if there is room for fingers to get behind bush edges.    Just a few of many ways.    See ya, John B.

-----Original Message-----
From: David Friedlander via NET <net at newenglandtriumphs.org<mailto:net at newenglandtriumphs.org>>
To: TR3 Triumphs <triumphs at autox.team.net<mailto:triumphs at autox.team.net>>; New England Triumphs <net at newenglandtriumphs.org<mailto:net at newenglandtriumphs.org>>
Sent: Wed, Nov 17, 2021 10:03 am
Subject: [NET] Pilot bush -- TR3

Good morning listers!

A quick question: To remove the pilot bushing from the crank, do
I also have to remove the flywheel? I've already removed the disc
and pressure plate but the pilot doesn't seem to want to budge....

Thanks for any insights,

Dave
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