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cam sprocket lock tool

 
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Old 12 Jun 2018, 06:13 am
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Default cam sprocket lock tool

Contemplating changing the timing belt in the near future. None of the various "how-to" videos on the internet show the mechanic using a cam sprocket lock tool that firmly holds the two cam sprockets in perfect alignment while installing the new belt.
Instead, it becomes a struggle to keep everything in proper position while trying to shoehorn on the new belt.
Wouldn't the use of such a tool make life easier?
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Old 12 Jun 2018, 06:49 am
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Default Re: cam sprocket lock tool

Yes, it would. But most of us either don't own one or have access to one. I don't know if any of the parts stores have that on in their loaner programs or not. Might be worth looking into since you're planning the job. Get back to us if you do that.
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Old 12 Jun 2018, 07:34 am
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Default Re: cam sprocket lock tool

A friends extra hand works just as well. I did mine at a shop. I did all the work except the owner did the alignment(his request), I held a wrench on one cam gear. It was very smooth/painless/easy. I can't imagine needing a special tool.
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Old 12 Jun 2018, 10:48 am
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Default Re: cam sprocket lock tool

I built a tool with a piece of flat steel and 2 bolts and 2 nuts. the cams have holes in the top before you take it apart set flat steel on top of cam mark holes. Drill holes in flat plate. Insert bolts in holes. Tighten nuts on bolts. Use remaining bolt to lock into holes on cam. Perfect tool.
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Old 12 Jun 2018, 11:02 am
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Default Re: cam sprocket lock tool

How bout photo?
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Old 12 Jun 2018, 11:06 am
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Default Re: cam sprocket lock tool

Quote:
Originally Posted by Tuggajb View Post
How bout photo?
Not at home now but will take and send one when I get home later.
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Old 12 Jun 2018, 11:16 am
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Default Re: cam sprocket lock tool

The important step is to first align the cam sprokets so that the inner arrows line up with the bolts:



Then put the belt over the sprockets and hold them there with either binder clips




or clamps



A good idea is to use a magic marker to mark spots on the sprockets and belt so that the belt aligns with the lined-up sprokets and crankshaft sprocket





If you do this before removing the old belt, you're already set. If not and you find yourself off by a tooth after the 2 revolution test, it's easy to move the sprocket by 1 notch afterward.


Last edited by rsrocket1; 14 Jun 2018 at 07:47 am. Reason: resized images
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Old 13 Jun 2018, 03:57 am
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Default Re: cam sprocket lock tool

thanks for the replies... some good ideas
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Old 13 Jun 2018, 10:15 am
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Default Re: cam sprocket lock tool

Quote:
Originally Posted by Tuggajb View Post
How bout photo?
pictures as promised.
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File Type: jpg tool 2.jpg (36.9 KB, 18 views)
File Type: jpg tool 3.jpg (35.2 KB, 18 views)
File Type: jpg tool 1.jpg (28.8 KB, 16 views)
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Old 13 Jun 2018, 07:45 pm
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Default Re: cam sprocket lock tool

Looking at the pics of the belt, just curious... what keeps the timing belt from wanting to walk off the cam sprockets ? There is no shoulder on the sprockets (or tensioner or idler).
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