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Author Topic: Cam Belt Alignment Marks  (Read 2524 times)

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MG

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Cam Belt Alignment Marks
« on: 16 April 2009, 09:12:05 »

Hi All.
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Mel.

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Re: Cam Belt Alignment Marks
« Reply #1 on: 16 April 2009, 09:18:41 »

How do
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MG

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Re: Cam Belt Alignment Marks
« Reply #2 on: 16 April 2009, 09:25:24 »

Hi All, I have purchased an SKF cam belt kit from Auto Vaux and have fitted the belt pulleys and have then tried to align the marks on the cam belt with the corresponding notches on each pulley - as per Mark's DVD.
I have then aligned the 2 white lines to the crankshaft pulley then guide the belt around cam pulleys 1 and 2 aligning each white mark to each pulley notch apparently with no problem. Then when I get to align Cams 3 and 4 there are no white marks anywhere near!!!
On this Gates belt, there are also 2 Yellow crank shaft marks. If I align these with the crankshaft pulley, I then am able to line a yellow mark to cams 1 and 2 notches, guiding the belt around to cam pulleys 3 and 4, I can then successfully align a white mark with each pulley notch.
Question I have is, is this OK? It all appears to look exactly as per Mark's video with the exception that I have yellow alignment marks on the crank pulley, yellow alignment marks on pulleys 1 and 2, and white alignment marks on pulleys 3 and 4!!

Has anybody else come across this with Gates belts and can anyone possibly provide me with some advice please!!!

Cheers,


Mel.
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Mel.

Marks DTM Calib

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Re: Cam Belt Alignment Marks
« Reply #3 on: 16 April 2009, 09:27:31 »

Simple question....does the belt fit with little slack any where?

If so then it hould be fine.
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MG

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Re: Cam Belt Alignment Marks
« Reply #4 on: 16 April 2009, 09:34:16 »

Hi Mark.
The belt fits fine, and seems to be OK. I have not yet tried a rotation simply because I thought I ought to seek advice first.

Shall I try rotating and see if all still aligns?

Have you ever come across this issue before?

Cheers,

Mel.
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Mel.

jjleonard

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Re: Cam Belt Alignment Marks
« Reply #5 on: 16 April 2009, 10:09:28 »

Yes, you are OK. I had this exact same problem with an SKF kit from Autovaux; went ahead and aligned yellow marks with the crankshaft pulley and cams 1 & 2, then white marks with cams 3 & 4, and everything was fine.

As mentioned by Marks DTM, provided the belt is tight with no slack and your tensioners are set, then you'll be OK.
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MG

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Re: Cam Belt Alignment Marks
« Reply #6 on: 16 April 2009, 10:25:13 »

Many thanks JJ.

Will do a rotation once it stops raining!!

Cheers.

Mel.
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Mel.

jjleonard

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Re: Cam Belt Alignment Marks
« Reply #7 on: 16 April 2009, 10:28:14 »

Quote
Many thanks JJ.

Will do a rotation once it stops raining!!

Cheers.

Mel.

 ;D ;D ;D ;D

Wuss. (actually, to be fair, a cambelt change is probably the only job I WOULDN'T do in the rain!)
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Darth Loo-knee

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Re: Cam Belt Alignment Marks
« Reply #8 on: 16 April 2009, 10:36:38 »

Some of the Vauxhall Belts dont have any marks on them at all mate. If you work one way, I always go anti clockwise from the Crank, over the roller, then over the top of Cam 4, then 3, under the centre roller, over Cam 2, then 1, then if you have the belt with no slack it should just go over the Tensioner. If for instance your a tooth out between the Crank and Cam 4 it will be difficult to get the belt over the Tensioner plus the roller under Cams 3&4 wont be able to take enough slack out of the belt.

Hope this makes sense
Daz :y
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Jimbob

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Re: Cam Belt Alignment Marks
« Reply #9 on: 16 April 2009, 10:37:20 »

iirc the marks wont line up again after a rotation, they are just for roughly getting the initial timing.

Its locking tool only to check once youve gone round once.

Lizzie_Zoom

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Re: Cam Belt Alignment Marks
« Reply #10 on: 16 April 2009, 11:00:46 »

Quote
Hi All.

Hello MG and a very warm welcome to you! :y

If you place a short introduction to yourself on the "Newbies Welcome" section more members will give you the proper 'hello' that we like giving to those new to this site!  :-*:D ;) ;)
« Last Edit: 16 April 2009, 11:01:07 by Lizzie_Zoom »
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MG

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Re: Cam Belt Alignment Marks
« Reply #11 on: 16 April 2009, 17:32:28 »

Hi Lizzie,

Thanks for the welcome!
Will do a short intro on Newbies column.

MG
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Mel.

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Re: Cam Belt Alignment Marks
« Reply #12 on: 16 April 2009, 17:36:48 »

You are using a cam locking kit aren't you mate?
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ians

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Re: Cam Belt Alignment Marks
« Reply #13 on: 16 April 2009, 18:29:45 »

Quote
Many thanks JJ.

Will do a rotation once it stops raining!!

Cheers.

Mel.

You have timed and tensioned it haven't you?  Sorry if its obvious but best to ask before you rotate it..
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MG

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Re: Cam Belt Alignment Marks
« Reply #14 on: 16 April 2009, 18:35:19 »

Yes I bought a cam locking kit, and have timed and tensioned it as per Mark's video.

I have since rotated the crankshaft about ten times (!) and the marks on the cams align perfectly with the guage when at TDC.

Have completely re-assembled.

I am charging the battery now (as it went flat - been off road for several weeks now) and will try it in the morning.

Thanks for all your help - it really makes me feel 'not alone' while doing this work!

Cheers.
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Mel.
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