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Author Topic: timing belt markings  (Read 5050 times)

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dubiez

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timing belt markings
« on: 29 October 2013, 21:48:00 »

I decided last week-end to tackle the cambelt change on my Omega Elite estate (3.0 X30XE).
I got the locking tool hired from autovaux for a small fee with the purchase of an SKF timig belt kit (VKMA05501) and water pump.
I follow the DVD all the way and everything is going well (having a spare TV in the garage helps).
I lock all the cams, remove the original belt, change the plate that has 2 pulleys on it, change the water pump, and when I go to put my shiny new belt, I realise I can't align the markings on the belt with cams 3 and 4 (they are 5-6 teeth out) .
Looking at that new belt, it wears the number 05500, which is the belt that goes with the early engine kit (same number of teeth though).
I call autovaux to complain I've got the wrong belt supplied with the kit and they say that since the belts have the same number of teeth, SKF does not bother making 2 different ones for each kit. They offer to send me free of charge a genuine GM belt they have in stock.
I get home tonight, open the parcel and the genuine belt is for an early engine, the markings are identical to the SKF belt  :'(
Now, can I get a belt for a late engine with the right markings on it (e.g. from Vauxhall)?
Is there any way I can fit the belt ignoring the markings?
Any help appreciated, I'm getting desperate.
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jonny2112

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Re: timing belt markings
« Reply #1 on: 29 October 2013, 21:59:52 »

Its been a veryyyy long time since I last did one, but I'm due to do mine shortly.
I can't remember the DVD,  but as long as the centre marking lines up at the bottom of the crank, then I'm not convinced that the other markings all line up anyway.
Some of the experts will advise better, but at the end of the day you have already lined up and secured the cams in place.
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Andy B

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Re: timing belt markings
« Reply #2 on: 29 October 2013, 22:31:53 »

....
Any help appreciated, I'm getting desperate.

Forget the marks on the belt, you have a timing kit, use that to time it.  :y :y
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dbug

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Re: timing belt markings
« Reply #3 on: 29 October 2013, 22:34:27 »

....
Any help appreciated, I'm getting desperate.

Forget the marks on the belt, you have a timing kit, use that to time it.  :y :y

+1  :y
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Andy H

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Re: timing belt markings
« Reply #4 on: 29 October 2013, 22:40:10 »

I think the V6s started off with printed markings on the belt but they were dropped for later engines.

Different idlers on later engines mean that the printed markings won't make sense so ignore them.

The key thing is to get the markings on the pulleys to line up with the markings on the alignment tool with the crank locked at TDC.

Check & re-check before removing the crank lock then winding the crank two turns clockwise before checking again.

If not spot on then adjust and repeat.

Finally wind the crank another 2 turns and check again.

If you are not confident that it is 'right' then don't be too proud to ask again :y
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dubiez

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Re: timing belt markings
« Reply #5 on: 29 October 2013, 22:50:47 »

It's my first time belt ever so a bit nervous to get it wrong.
I'll give it a go tomorrow ignoring the markings.
I may need some more advice, so watch this space.
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chrisgixer

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Re: timing belt markings
« Reply #6 on: 29 October 2013, 22:52:59 »

The Belt marks are just one more worry you don't need. Waste of time, just use the kit as said. :)
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jonny2112

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Re: timing belt markings
« Reply #7 on: 29 October 2013, 23:03:18 »

 :y :y
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albitz

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Re: timing belt markings
« Reply #8 on: 29 October 2013, 23:55:30 »

And make sure you turn the engine through 760 degrees before you fire it up,just to make sure something isnt going to touch something else. That way the worst that can happen is it wont run properly. ;)
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Andy B

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Re: timing belt markings
« Reply #9 on: 30 October 2013, 06:44:40 »

And make sure you turn the engine through 760 degrees before you fire it up,just to make sure something isnt going to touch something else. That way the worst that can happen is it wont run properly. ;)

or 720 .....  ::)
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albitz

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Re: timing belt markings
« Reply #10 on: 30 October 2013, 07:10:39 »

Im on nightshift,I was tired.Far cough. :P ;D ;D





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TheBoy

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Re: timing belt markings
« Reply #11 on: 30 October 2013, 11:41:30 »

As others say, ignore the markings, just fit. Only marking to note is the direction arrows, which should be clockwise.
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cem_devecioglu

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Re: timing belt markings
« Reply #12 on: 30 October 2013, 11:57:52 »

all engines use the same belt as far as I know.. and if markings correctly positioned , they come to correct position after 2 turns.. :-\
 
ps: Fit the cambelt so that the DOUBLE white line is aligned to the crankshaft
notch at 6.0 clock
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TheBoy

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Re: timing belt markings
« Reply #13 on: 30 October 2013, 12:20:41 »

all engines use the same belt as far as I know.. and if markings correctly positioned , they come to correct position after 2 turns.. :-\
 
ps: Fit the cambelt so that the DOUBLE white line is aligned to the crankshaft
notch at 6.0 clock
nope
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cem_devecioglu

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Re: timing belt markings
« Reply #14 on: 30 October 2013, 18:08:56 »

all engines use the same belt as far as I know.. and if markings correctly positioned , they come to correct position after 2 turns.. :-\
 
ps: Fit the cambelt so that the DOUBLE white line is aligned to the crankshaft
notch at 6.0 clock
nope

yep.. old age .. this is the correct sentence
tensioner set to the top quadrant should come down to the centre mark once the crank is turned 2 revs..
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