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Volvo TGB11 Drivebelt Change

Posted: Wed Jul 31, 2019 12:00 am
by thedoeges
Ok,

Both of my drivebelts disintegrated after I made a hard stop for a red light. Grinding sound, screeching sound, instant hot temp, and white smoke. I thought I had the correct gates belts, and I still think I have, but when looking for directions on www.c303.de for service manuals, I could not find a procedure on how to change the drive belts. So I loosened the tension screw on the alternator, loosened the alternator mounting screw to tilt the alternator inwards for making space to put the new belts on and they are hopelessly short. I verified that I have the correct belts a while ago. Is there a secret way of doing it, do I have to take the circular tracks off the alternator to get the belts around (and even then it seems like the belts are too short, as I would not be able to swing the alternator back into its original place), Is there anyone out there who can give me the correct belts and maintenance procedure?

Thanks a lot!!
Marcus

Re: Volvo TGB11 Drivebelt Change

Posted: Wed Jul 31, 2019 4:18 am
by Tjerk
And the tensioner?

Re: Volvo TGB11 Drivebelt Change

Posted: Wed Jul 31, 2019 9:46 am
by thedoeges
I though the tensioner is the top mounting screw of the alternator, which is screwed through a sliding bracket. Having loosened that screw, and the bottom one, I was able to tilt the alternator inwards, but it was not enough to get the belts on. And even if I would have gotten them on, it all looks smaller than original. Do those belts get loose over time and I have to adjust the alternator outwards to take the slack out?
Or am I mistaken on where the tensioner is?

Re: Volvo TGB11 Drivebelt Change

Posted: Thu Aug 01, 2019 4:22 pm
by Tjerk
Which engine does it have?

Re: Volvo TGB11 Drivebelt Change

Posted: Tue Aug 06, 2019 1:27 pm
by Jim Molloy
Does your truck have the original S.E.V. Marchall alternator or something different? Regardless, replaced can be tedious since you must disconnect the cooling fan propeller shaft from the front of the water pump requiring tilting the fan assembly forward for clearance. If your truck is now equipped with an electric cooling fan, obviously, you no longer have the prop shaft issue.

In the Volvo parts manual, the primary belt part number is: 966962-3 From a very early Yahoo Groups Volvo TGB parts cross reference, that corresponds to a NAPA XL25-7350. I just did a search using Volvo part number 966962 and came up with the following link. Scroll down for MANY cross reference options. https://www.finditparts.com/products/46 ... ayco-15350

Hope this helps.

Jim Molloy
Waldersee Farm
http://www.northwestmogfest.com