I'm changing the timing belt for the first time, and I want to make sure I do this right. Here's a picture of what I THINK is the crankshaft timing mark. Is that it? Both of the camshaft pulleys are aligned. If this is the mark on the pulley, is there a mark on the engine block with which to align this? I can't find one. . . Thanks!

[IMG]local://upfiles/17116/12079297584B4D7D9EA6F1168B95FD2E.jpg[/IMG]

 

Also, I think I have the mechanical tensioner rather than the hydraulic one. The instructions I have from volvospeed.com discuss the hydraulic one. What's the procedure for the mechanical one?

 

Yes right mark
Yes mechanical tensioner.
When going back together leave the center screw slightly loose(finger tight)
Then turn the allen counter clockwise till the tab passes the window (2 tabs) then back off slightly till it is centered. Then tighten the center screw.
Crank the motor over 2 full times by hand. Then recheck all marks.

 

Okay, thanks. I got the timing belt off. To get the water pump off, what else do I have to remove besides the seven bolts?

 

As long as all the bolts are off give it a light tap with a hammer to break the seal. Then it should fall off.

 

Great, I got it off! Thanks so much for helping me through my first time.

I had to cut the old timing belt to get it off, because I couldn't get it around the backside of the crank pulley. Any suggestions for getting the new one on without cutting it? I already removed that metal plate that's behind the pulley and is held on by two 10mm bolts.

 

You should have taken the bigger pulley off when you started. You should be able to work it in there but it will be a pain.

 

Okay, now that the timing belt is off I can see the crankshaft marks better. This is what it looked like with the two camshaft pulleys aligned with the notches on the upper timing belt cover (see pic). It looks like there are two tiny "notches" on the crankshaft sprocket (indicated by the yellow arrows), and I think that the thing the red arrow is pointing to is the timing mark on the engine block. Correct?

So my question is this: Where should the sprocket be when the engine is at TDC? Should one of the two notches be lined up or should mark on the engine block be between the two notches?


Oh, one other thing. Does anyone know what the torque specs are for the 7 water pump bolts are supposed to be?

Thanks!

[IMG]local://upfiles/17116/5FEDE58A69C940C3B1D2F686F967221B.jpg[/IMG]

 

It is supposed to be between both timing marks.(Yellow arrows)

The specs are 17MN or 12FTLBS

 

So does this mean that my timing has been ever-so-slightly off this whole time? Should I go ahead and nudge the crankshaft forward a bit to line it up?

 

You should, but be VERY carefull. I used a really large socket with an extension and just tapped it to get it to line up.

Also when you turn it over times it should be fairly smooth if you find it really hard to turn re-check everything.

 

Yes so the mark lines up with the groove. Then when you put the belt on the top marks will still look lined up.

 

tech,
Going to be doing my timing belt soon and glad to see this thread. Regarding your statement above, I've read that the belt can be changed without taking the crankshaft pulley off. Something about needing to remove some plate covering the pulley to push the new belt back onto the sprocket. How much of a PIA is it to do the job without removing the pulley? I'm asking 'cause I don't have an air hammer gun to knock the bolt off the pulley. Will go an purchase one if you think it is a must-have item for a first-timer doing a timing belt change. thanks

 

It is a pain in the A**. I used to do it that way and then realised it went on really easy with the pulley off. It is also alot easier to see the timing mark.

 

How do I put the nut back on tight without turning the crankshaft?

 

You would remove it before setting all the pulleys into position. Then install it after the belt is on. So it wouldn't matter if it moved when tightening.

 

cool, thanks!

 

specs say that the nut needs to be tightened to 133 ft-lbs. Will that it be possible to put that much force on the nut without causing the engine to turn over? How do I hold the pulley while applying the torque force?

 

See if you can rent a battery impact from a auto parts store. It will be hard to hold the pulley to tighten it.

 

tech...how does the pulley come off after the center nut is removed...need a harmonic balancer puller or just a pry bar?