6 replies to this topic

[stoner564]

I drive a 2000 s80 2.9 non turbo. At the track this week and the belt broke. How do I replace this main timing belt? I know that the wheels have moved sence the track I had the car towed to my house, went out and purchased a new belt and now I have to put it on. But I dont know how to put it on while keeping the timing right. Any help?

[Bay13]

Your engine has interference valves and when your belt broke the pistons have bent the valves in the head, the head has to be replaced and the pistons inspected for damage.

[stoner564]

We already checked and replaced the head. We just dont know how to get the belt on there while its set to the right timing.

[Flyby]

We already checked and replaced the head. We just dont know how to get the belt on there while its set to the right timing.

Wow... already replaced the head? Shize!

Don't you jsut line up the notches now?

Edited by Flyby, 25 February 2005 - 06:53 PM.

[stoner564]

Wow... already replaced the head? Shize!

Don't you jsut line up the notches now?


Thats where im runing into a problem what do i line them up with? And which ones have notches on them?

[Vitor]

Before re-installing the head you need to align the crankshaft to the #1 piston to be TDC, then you can look for the mark on the crankshaft.

Prepare the head (before installing) by making sure the camshaft lobes are both away from the lifters (intake and exhaust must be closed) in #1 cylinder to make sure you don't bend the valves during re-installation.

Install the head and then look for the align marks.

If you install the head and then start rotating the crankshaft and camshafts looking for the marks, you will end with the same problem again.

Look in the maintenance section and notice the timing marks for the 850 and 70 series. In the S80 you will find something similar.

[jens94850]

Wow... already replaced the head?  Shize!

Don't you jsut line up the notches now?


Thats where im runing into a problem what do i line them up with? And which ones have notches on them?

Bay 13 Admin gave me a good tip about this for an 850 a week or two ago. The Haynes manual tells you how to line up the cams with the head off without a tool. For the 850, you can use their method with the head on as well. I don't have a Haynes for an S80, but hopefully it's true for the s80 as well. On the 850, you used the notches behind distributor and behind cam sensor.