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markindevon
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 Posted: Sat Aug 19, 2017 10:59 Post subject: Timing chain guide and tensioner 3.2DID |
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Having read lots about the timing chain guide I have ordered one to fit myself.
Do I need to adjust the tensioner or should I be replacing the tensioner as well?
The guide looks quite straightforward to change but any information about the tensioner would be appreciated. |
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| Posted: Sat Aug 19, 2017 10:59 Post subject: Google Ads keep the POCUK free to join! |
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Mark3
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| Posted: Sat Aug 19, 2017 17:26 Post subject: |
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If your applying any additional tension to the chain (new guide isnt worn so it will deflects the chain more) you need to reset the tensioner, remove it before fitting new guide, then reset it and re install it, no need to renew it  |
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Pajero James
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| Posted: Sat Aug 19, 2017 18:10 Post subject: |
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| No tension on chain where top guide is on TDC and on various other points so change the top guide on TDC. No need to remove tensioner. |
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markindevon
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| Posted: Sun Aug 20, 2017 10:31 Post subject: |
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Thank you for the information.
So should I need to reset the tensioner do I just remove the old one, reset it by pushing in the plunger and then replace with a new gasket?
I read somewhere about turning the crank clockwise, or will it just adjust itself.
Thank you for the advice. |
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Pajero James
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| Posted: Sun Aug 20, 2017 11:12 Post subject: |
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| You were given advice on doing it both ways, why remove the tensioner if you don't have to. Choice is yours. |
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Mark3
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| Posted: Sun Aug 20, 2017 11:25 Post subject: |
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The new guide DOES push the chain down more, only a tad but more than the old guide does which is putting more tension on the chain as it effectively shortens it, only by a fraction but it does.......
Is it really worth taking the risk when it takes less than 5 mins to remove the tensioner first then reset and refit it and the new guide in bolted into place? |
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drew m
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| Posted: Sun Aug 20, 2017 11:47 Post subject: |
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| Yes, but only between the top 2 cogs which on which the tensioner has no affect, unless I'm missing something. |
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Mark3
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| Posted: Sun Aug 20, 2017 12:03 Post subject: |
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| drew m wrote: |
| Yes, but only between the top 2 cogs which on which the tensioner has no affect, unless I'm missing something. |
I really dont mean to be rude but please tell me your joking? The tensioner has an effect on the whole length of the chain
This is similar to the joke that flat tyre is only flat at the bottom  |
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Mark3
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| Posted: Sun Aug 20, 2017 12:05 Post subject: |
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| If you put a circle or cord around two pulleys and press in one side it will make the other side tighter this is the same as how a chain or belt tensioner works. |
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Pajero James
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| Posted: Sun Aug 20, 2017 12:23 Post subject: |
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| Mark have you ever done a 3.2 top guide and brought one of these to TDC? |
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drew m
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| Posted: Sun Aug 20, 2017 12:33 Post subject: |
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| Cords and belts round pulleys are totally different from chains round cogs, the teeth on the cogs surely stop the chain being tensioned all the way round,only on the longest section, which is enough to keep the chain from jumping off, that's my reasoning but I may be wrong. |
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peteinchad
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| Posted: Sun Aug 20, 2017 13:14 Post subject: |
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| drew m wrote: |
| the teeth on the cogs surely stop the chain being tensioned all the way round,. |
Unless the cog rotates - which is the whole idea of a cog. |
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drew m
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| Posted: Sun Aug 20, 2017 13:51 Post subject: |
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| Are these cogs not fixed to shafts therefore not able to turn independently but in synchronised coordination with other cogs. |
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Mark3
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| Posted: Sun Aug 20, 2017 14:13 Post subject: |
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| Pajero James wrote: |
| Mark have you ever done a 3.2 top guide and brought one of these to TDC? |
One or two
but either way the new guide deflects the chain downwards slightly more so than the worn guide so going by the laws of physics it will be trying to tighten the chain |
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peteinchad
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| Posted: Sun Aug 20, 2017 14:22 Post subject: |
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The shafts will rotate.
From the sticky on how to change the guide HERE
| sherman47 wrote: |
After reading all the posts about the upper chain guide I decided to replace mine. Imagine my astonishment when I removed the rocker cover to find the guide gone! As in the picture at the start of this subject all that remained was half the guide. I presume the rest is at the bottom of the engine somewhere.
My problem, is now, the chain has now tensioned, as the tensioner has done its job and taken up the slack.
Is there a way of adjusting the tensioner so that I can install the new upper chain guide?
Any help/suggestions appreciated
Thanks |
And from a different forum
HERE
| 4ePikanini wrote: |
the tensioner on the side needs to be reset.
It unbolts with two bolts on the side of the head and pulls out.
You then unclip and push the tensioner all the way back and hook the little hook.
Best is to then pull the tappet cover, turn the engine via the crankbolt clockwise and make sure the tensioner releases from the hook. |
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