S-80 Timing belt questions

[dieselmonster984]

2000 Volvo S-80 w/ 2.9L 90,000 miles. I have been studying many of the posts, in preparation for attempting this maintenance task. I have seen several references to the 30mm crank bolt requiring a pneumatic tork wrench to get the bolt out. Wouldn't a high amperage electric tork wrench work as well? Is there no way at all to pin or lock the crank (special tool.....something!)? I have also read that the timing belt could be removed without taking the pulley off....Is this feasable, or should I just remove the serpentine belt pulley? What type of gear puller (if necessary) should I use to get the said pulley off, I know that the jaw or claw type could damage the pulley. Any type of feedback would be greatly appreciated. This site has been a life saver for me and I have been forever grateful for it.....keep it up.

[JDS60R]

This is the Volvo method - hope it helps

[537playing]

I speak from experience in removing the timing belt. First, you MUST remove the crankshaft pulley. To do this you should have a breaker bar to help yourself. To remove the four bolts is a challenge unless you have the right tools or you'll strip the bolts. Buy four new ones to be safe.
To remove the 30MM bolt, I just rested the socket wrench against a suspension part and turned the ignition switch on to rotate the engine. Just a quick short turn will do. The bolt came off with no issue.
I followed the rest of the instructions with no other issues. Reassembling the top timing belt cover can be a challenge to snap in!
Be patient. Good Luck.

[keithatcpt]

I made my own version of the volvo counterhold tool part number 9995433 out of some bar stock. Two pieces, one longer than the other for a handle, bolt them together in a lowercase "y" shape. Drill two holes in the top of the y to fit two of the four screws around the crank nut. Tighten the screws onto the counterhold tool. Lie down on your side and put a foot on the counterhold tool and apply brute force to the 30mm nut with an 18" breaker bar. That's how I did it.

Once you get the 30mm nut off, remove the bolts holding your counterhold tool and the pulley should come right off.

Most importantly:
1. Make sure your timing marks all line up before removing the belt!

2. After installing the new belt, rotate your engine two full turns by hand (turn the 30mm nut with a wrench; socket extensions help here) and verify that the timing marks still line up.

3. Do the whole job with lots of patience. It takes less time to replace a timing belt carefully than to rebuild the top end in a hurry.

- Keith

[dieselmonster984]

Thanks Keith, I was thinking about improvising a tool similar to what you have described.......sounds simple enough to make. I am glad to hear that the pulley comes off with ease. I am an old Navy engineer and have fought with many diesel plants. Not having the right tools for the job infuriates me, so I go through great pains to ensure I have everything I need before I start one. Thanks again

Dan

[hender40]

Assuming that just the serpentine belt is to be replaced, not the timing belt, do you have to remove the 30 MM nut/bolt or just the 4 bolts on the harmonic balancer.

Don H Fresno CA

[537playing]

No. Just move the belt tensioner to release the pressure on the belt to remove

[hender40]

Mine is 1999 S-80, T-6. There is a bolt protruding from the engine toward the backside of the balancer that is preventing me from removing the aux belt with the balancer on. I must remove the balancer to create enough clearance to remove the belt so therefore can't just release the belt tensioner pressure and remove the belt. So, must I remove the 30 MM crank nut/bolt or will the balancer come off with removing just the 4 bolts ?? Thanks so very much !!!

Don H

[Eldoninoz]

the balancer is only held on with the 4 bolts, the 30mm holds the aux pulley and timing gear.

[537playing]

Just remove the four bolts only.