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Timing belt question

Transit Mk3, 4 & 5(smiley front) Forum. All Transits 1986 - 2000

Timing belt question

Postby Mac1984 » Fri Apr 16, 2021 11:11 pm

Hi all,

I admit I have a bit of fear
With this automatic timing belt tensioner.

I don't fully understand it.

Is it possible to tighten it too much? The timing belt now is pretty firm, I can still push it down a little bit.

There is nice tutorials on YouTube, but all I have seen is about this
Manual sliding type thing, not the round spring one that I have.

I always figured if it's automatic, I can't do much wrong, but maybe I'm wrong.

And I'd like to ask at a time when I can still undo the fault..

Many thanks in advance
1996 2.5TD Bosch Mod, Bio degradable Body from factory but outlived its manufacturing plant.
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Re: Timing belt question

Postby dumper » Sat Apr 17, 2021 6:45 am

If you follow the instructions that come with the new type adjuster and the marks line up after turning the engine two full revolutions all the locking pins go back in that should be all right sometimes you may have to adjust it again I always check it twice just to make sure.
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Past camper vans
1974 mk1 v4 with 2.0 pinto fitted
1986 mk3 2.5 di swb
1990 190 lwb 2.5 di
1998 100 lwb 2.5 di
2006 350 jumbo 135 tdci
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Re: Timing belt question

Postby Mac1984 » Sat Apr 17, 2021 8:22 am

Thank you for your reply.

Unfortunately there was no instruction at all with it, just the belt and the tensioner.

There is 2 white spots on the thing, and I can turn that with an allen key, but I am not sure to where, or what should line up with that second white spot. Would be great if there was a marking on the plate that you rotate as well, then it would be easy enough to understand.
1996 2.5TD Bosch Mod, Bio degradable Body from factory but outlived its manufacturing plant.
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Re: Timing belt question

Postby Altransit » Sat Apr 17, 2021 9:33 am

You time it with the three locking pins. The pins are re-inserted after rotating the engine twice after fitting, so there's no need for markings.
If they won't all go back in smoothly, the belt needs re-adjusting.

You should have about half inch of belt deflection (push it down with your thumb) on the longest run of the belt, that's the correct tension.
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2004 Mk6 SWB T280 Medium Roof 85PS 2.0 TDDi - Vantunered (Also gone)
2008 Mk7 SWB T280 Medium Roof 85PS 2.2 TDCi - Also Vantunered
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Re: Timing belt question

Postby Mac1984 » Sat Apr 17, 2021 10:01 am

Thanks so much for your reply.

I might have it a bit too tight then maybe.. Well I take another look on Monday as I am working over the weekend.


Cheers
1996 2.5TD Bosch Mod, Bio degradable Body from factory but outlived its manufacturing plant.
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