Timing Belt tension on a 200Tdi

[Steve]

Hi folks,
The manual says "tension with a lever-type torque wrench to 20Nm"

Is that right ? It sounds like bugger all.

Steve

[Tom Woods]

Its not too far off what my workshop manual says for the 2.5 diesel
(29 to 23 Nm) - so its feasably correct.

[Pieter Vroom]

If you are replacing the timing belt you need to double tension it, i.e.
tension correctly once, rotate engine by hand for a couple of revs, and
repeat tensioning. I think there is a good description on difflock website
(for 300tdi, but very similar).

Pieter

"Steve" <st...@thetaylorfamily.org.uk> wrote in message
news:4377a068$0$23279$db0f...@news.zen.co.uk...

[Steve]

Pieter Vroom wrote:
> If you are replacing the timing belt you need to double tension it, i.e.
> tension correctly once, rotate engine by hand for a couple of revs, and
> repeat tensioning. I think there is a good description on difflock website
> (for 300tdi, but very similar).
>

Yes, I got that idea from the manual too, just the tension seems awfully
low.

Steve

[Austin Shackles]

On or around Sun, 13 Nov 2005 20:14:24 +0000, Steve
<st...@thetaylorfamily.org.uk> enlightened us thusly:

>Hi folks,
>The manual says "tension with a lever-type torque wrench to 20Nm"
>
>Is that right ? It sounds like bugger all.

nah, 's right. that's th eload on the tensioner, it's quite tight enough.
It's not the fixings.

--
Austin Shackles. www.ddol-las.net my opinions are just that
"For millions of years, mankind lived just like the animals. Then
something happened which unleashed the power of our imagination -
we learned to talk." Pink Floyd (1994)

[Nick Williams]

On Sun, 13 Nov 2005 21:16:53 +0000, Steve wrote
(in article <4377af0d$0$23294$db0f...@news.zen.co.uk>):

You're not measuring the actual tension in the belt, though, you're measuring
the torque that results on the idler pulley, and the laws of geometry mean
that this is (likely to be) much lower than the actual belt tension.

Nick.

[Huw]

"Nick Williams" <nick.w...@conformance.co.uk> wrote in message
news:0001HW.BF9D6BEF...@news.demon.co.uk...

Besides which and despite popular folklaw, it is not an elastic band.

Huw

[Austin Shackles]

On or around Mon, 14 Nov 2005 13:10:43 -0000, "Huw"
<hedydd[nospam]@tiscali.co.uk> enlightened us thusly:

very true. The amount of stretch is minimal indeed.

--
Austin Shackles. www.ddol-las.net my opinions are just that

"Chuck didn't reply, so George swung round in his saddle. He could just
see Chuck's face, a white oval turned toward the sky.
'Look,' whispered Chuck, and George lifted his eyes to heaven.
(There is always a last time for everything.)
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[beamendsltd]

In message <657hn1hopbrg1r4fc...@4ax.com>
Austin Shackles <austin...@ddol-las.net> wrote:

> On or around Mon, 14 Nov 2005 13:10:43 -0000, "Huw"
> <hedydd[nospam]@tiscali.co.uk> enlightened us thusly:
>
> >
> >"Nick Williams" <nick.w...@conformance.co.uk> wrote in message
> >news:0001HW.BF9D6BEF...@news.demon.co.uk...
> >> On Sun, 13 Nov 2005 21:16:53 +0000, Steve wrote
> >> (in article <4377af0d$0$23294$db0f...@news.zen.co.uk>):
> >>
> >>> Pieter Vroom wrote:
> >>>> If you are replacing the timing belt you need to double tension it, i.e.
> >>>> tension correctly once, rotate engine by hand for a couple of revs, and
> >>>> repeat tensioning. I think there is a good description on difflock
> >>>> website
> >>>> (for 300tdi, but very similar).
> >>>>
> >>>
> >>> Yes, I got that idea from the manual too, just the tension seems awfully
> >>> low.
> >>>
> >>> Steve
> >>
> >> You're not measuring the actual tension in the belt, though, you're
> >> measuring
> >> the torque that results on the idler pulley, and the laws of geometry mean
> >> that this is (likely to be) much lower than the actual belt tension.
> >>
> >
> >Besides which and despite popular folklaw, it is not an elastic band.
>
> very true. The amount of stretch is minimal indeed.

Which is just as well, as setting the timing with a stretchy belt
could represent something of a challenge.......... ;-)

Richard
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[Defender90]

19/20 nm is spot on with a flexi torque wrench Steve. 45 nm for the fixing bolt with a snap torque wrench Regards Def. Ken.

--
For full context, visit https://www.motorsforum.com/landrover/timing-belt-tension-on-a-200tdi-66871-.htm