Pelican Parts Forums

Pelican Parts Forums (http://forums.pelicanparts.com/)
-   911 Engine Rebuilding Forum (http://forums.pelicanparts.com/911-engine-rebuilding-forum/)
-   -   Sprocket stuck on cam (http://forums.pelicanparts.com/911-engine-rebuilding-forum/713621-sprocket-stuck-cam.html)

JohnJL 10-27-2012 02:15 PM

Sprocket stuck on cam
 
Hi Guys,

I've got a problem I've not run into before. The sprocket is stuck on the left side cam. I've trued gently prying but I dont want to damage the chain cover or the sprocket. I've tried freeze spray, and tried turning the engine over a few times while attempting to hold the cam still.

Is there a trick to getting a stuck cam strocket off the cam?

Thanks!

boyt911sc 10-27-2012 03:09 PM

Try this method........
 
John,

Have you tried heating the sprocket? Penetrating oil and heat cycle would help. If it is really tight and stubborn, I would use a two or three-arm gear puller. But do not force it. With the puller installed, use heat and penetrating oil in conjunction with light tapping force applied on the sprocket face. Keep us posted.

Tony

E Sully 10-28-2012 04:40 AM

Make sure the key, shown by arrow, is sitting properly and not preventing the sprocket from sliding off.
http://forums.pelicanparts.com/uploa...1351427857.jpg

JohnJL 10-28-2012 05:57 AM

Thanks guys.


Ed, I mean the chain sprocket itself, before getting to the step you show above. Though I have forgotten that step before.

tom1394racing 10-28-2012 07:55 AM

I've run into this one before. Tough to grip it especially with the chain on the sprocket.

I have found that gently prying and wiggling it from side to side, usually will free it up. You may need to tap it back onto the cam a little until it will wiggle especially if you have it jammed up. Make sure you remove the timing pin before removal.

KTL 10-29-2012 07:24 AM

If you have a small two jaw gear puller, that'll get it off. You can insert the end bolt (if it's a bolt-end cam) as a bearing surface for the jacking screw. You're not putting a lot of force on either the sprocket, or the bolt, so its not a big deal to pull with the puller. Since the confines are rather tight, you're really just holding the puller in place to get a half decent grip on the sprocket. Light turning of the jack screw is all that's needed to pull it off.


All times are GMT -8. The time now is 07:25 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2025, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2025 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website


DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.