[Raga1000r]

Hello everyone, l'm helping my brother with his K9, we are replacing the CCT for a new one but, even it's a simple job we are a little confused about replacing it and the risk of messing up the timing. There's a big dilemma out there about setting TDC before doing this, but it doesn't make sense to me at all.
As far as my mechanical knowledge goes, setting TDC before removing the tensioner helps unloading the cams against spring force so we don't skip a teeth when tension is relieved.
But what about a inline 4? you will only set TDC for two pistons and the other two will be loaded, so... no way to prevent chain slipagge unless we monitor it from the cams itself which requires top end disassembly.

What do you think about this?

 

[BillV]

You make a fair point but Suzuki ought to know what they're doing here. Perhaps by setting it at TDC the cams will be close enough to their top or bottom that there won't be any force trying to turn the cam. The K9 uses a new design tensioner and the instructions for setting it are, without having one in hand, hard for me to understand.

 

[craigfer63]

Hello everyone, l'm helping my brother with his K9, we are replacing the CCT for a new one but, even it's a simple job we are a little confused about replacing it and the risk of messing up the timing. There's a big dilemma out there about setting TDC before doing this, but it doesn't make sense to me at all.
As far as my mechanical knowledge goes, setting TDC before removing the tensioner helps unloading the cams against spring force so we don't skip a teeth when tension is relieved.
But what about a inline 4? you will only set TDC for two pistons and the other two will be loaded, so... no way to prevent chain slipagge unless we monitor it from the cams itself which requires top end disassembly.

What do you think about this?

That is correct, only 2 two pistons will be at TDC. If you were lucky enough to get the right two pistons, Good.
Picture this, as you let the CCT off the cam chain goes slack and up towards the cams. With 8 valves open pressing on the cams. I can't picture this I would need to test this with my own eyes to see which way cams moved.
Has any one here, tested this ?
07-08 workshop manual shows removing the CCT with the cam cover OFF.
PS easy to get the cam cover off, all gaskets reusable and you can check valve clearance while your in there.