Ragnaco Posted October 5, 2015 Share Posted October 5, 2015 Hey guys, does the bike need to be set to TDC (top dead center) to remove the CCT. Getting some mixed opinions from people saying it should be set to TDC so that the cam shafts don't spin from the valve spring pressure when you release tension on the chain, causing the chain to skip teeth.However reading through all the CCT changing guides on here, not once does anyone mention setting the bike to TDC first. Link to comment Share on other sites More sharing options...
Member Contributer Mohawk Posted October 5, 2015 Member Contributer Share Posted October 5, 2015 If you are talking about the external components then its not required. It's only required if you are removing the internal slipper guides. Link to comment Share on other sites More sharing options...
Ragnaco Posted October 5, 2015 Author Share Posted October 5, 2015 I'm only talking about removing the external cam chain tensioner to replace it, but as I said, I am not worried about doing so as I heard the chain could skip timing on the cam once tension is removed as the cam will spin from pressure unless it's set to TDC. Link to comment Share on other sites More sharing options...
CandyRedRC46 Posted October 5, 2015 Share Posted October 5, 2015 pull them out dont rotate engine install new cct's dont rotate engine pull the cct locking keys out you may now rotate the engine Link to comment Share on other sites More sharing options...
spud786 Posted October 6, 2015 Share Posted October 6, 2015 Hey guys, does the bike need to be set to TDC (top dead center) to remove the CCT. Getting some mixed opinions from people saying it should be set to TDC so that the cam shafts don't spin from the valve spring pressure when you release tension on the chain, causing the chain to skip teeth. However reading through all the CCT changing guides on here, not once does anyone mention setting the bike to TDC first. If just installing a new cct, tdc is not required Link to comment Share on other sites More sharing options...
Auspanglish Posted October 19, 2015 Share Posted October 19, 2015 No Link to comment Share on other sites More sharing options...
Member Contributer Skids Posted October 20, 2015 Member Contributer Share Posted October 20, 2015 No. Link to comment Share on other sites More sharing options...
spud786 Posted October 20, 2015 Share Posted October 20, 2015 I'm only talking about removing the external cam chain tensioner to replace it, but as I said, I am not worried about doing so as I heard the chain could skip timing on the cam once tension is removed as the cam will spin from pressure unless it's set to TDC. To answer your concern, as you release the tension on the cct, any rotational pressure will subside along with that, there really instant enough play to jump a tooth easily anyway, unless you actually tried to turn the motor over or tried to start it . Link to comment Share on other sites More sharing options...
Member Contributer Cogswell Posted October 20, 2015 Member Contributer Share Posted October 20, 2015 Even with #1 cylinder at TDC, the other 3 will not be, so there will be varying levels of force exerted against the cams by valve springs no matter what position the engine is in. And, the forces would tend to offset each other, so no worries about things moving around with the CCT's out. Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.