After doing some reading i have noticed several CLers stating not to open up a Cam shaft sprocket pulley (the hex bolts) and pry it open. And if you do it means time for a new one.

Can someone answer me as to why that is?
is it because its hard to put it back together or is there a timing inside of that aswell?

if your wondering...i accidently opened it up and had a hell of a time putting it back together but i got it back together but i am just wondering why.....

 

you mean those 5 bolts around the VVT-i pulley? they are not suppose to be removed or you need to buy a new VVT-i pully assembly according to the manual. since you've got it back together, is your timing or VVT working properly?

 

Mine was leaking and I took it apart to seal the leak. Bolted everything back together without any problems so far.

 

only need to remove a 14mm hex plug, washer and a 10mm hex set bolt to remove the pulley assembly.

 

well i know that part just wondering as to why the manual says it. I am assuming cuz its a super pain in the *** to get it back together.

as for timing and vvt right now i am still having a problem as the car doesnt start yet. I think i set the camshaft timing wrong.

 

did you have a hard timing pushing it back together do to the spring?

 

unfortunately i only figured that out AFTER lol

 

I never took the parts inside the pulley apart, I only split apart the pulley as seen in this post.
https://www.clublexus.com/forums/gs-...seal-pics.html
There wasn't any spring that I'm aware of. I simply took the 5 bolts off and took the front half of the pulley out with out letting the inner parts fall out.

 

oh okay that means you only took the outer pulley off. i accidently took the hex bolts off and dismantled it thinking thats how the cam timing tube will come off.

 

I took both halves off completely to replace the cam seal, the only thing I didn't do was dismantling everything like you. From what I've been reading, there's only one way to put that VVTi pulley back together so I don't it would cause any problems for you.

I didn't noticed any kind of springs when I had it apart. The inner hear slid in and out freely without any kind of resistant.

 

your lucky because you got the gs3 i have the v8 big boy and that pulley is different.


lets see if i can explain it a little:

when you take the pulley apart in half there is an internal gear that is bolted down to the cam shaft and then there is a spring from the timing tube pushing out at the outter half of the cam pulley. there is also a secondary gear that goes on top of the mounted gear.

so its two gears, a spring, plus the outter half of the pulley.

its completely different from the ones on the gs3