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19th August 2018, 11:38 | #11 | |
MG ZT Join Date: Jan 2011
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19th August 2018, 13:38 | #12 |
same car since 2005
2001 Rover 75 2.0 v6 Connoisseur Saloon Join Date: Nov 2006
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Matt , if you have the Sealey tools then I assume you also have the Sealey instructions ? Follow the section 4.2 re the rear belts and you won't go wrong
In case you don't have the instructions I have attached them here . I didn't need to remove the crankshaft locking pin to do mine , and when refitting you rotate the exhaust camshaft as described . Easy
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19th August 2018, 19:39 | #13 |
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Whenever I do timing belts I always slowly go round two revolutions by hand with the spark plugs out, just to ensure nothing touches that shouldn't.
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19th August 2018, 20:16 | #14 | ||||
Doesn't do things by halves
Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Join Date: Mar 2007
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Simon
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"Whatever is rightly done, however humble, is noble." Sir Henry Royce. Last edited by SD1too; 20th August 2018 at 12:17.. |
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19th August 2018, 22:11 | #15 |
This is my second home
Rover 75 CDT Manual Connoisseur SE, Rover 75 CDT Automatic Connoisseur SE & a Freelander Td4. Join Date: Jul 2009
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So it would appear that 1955diesel was right all along then Simon.
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19th August 2018, 23:27 | #16 | |
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Rover 75 2.5 V6 Connoisseur SE 4dr manual Wedgewood Blue 2 04-05/06/2001 Join Date: Nov 2006
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But as above, just change them as per the book and use the 190 plates and it will be correct. Mike, 1955diesel was, I believe, referring to the position marks on the earlier 800 version of the KV6 which had floating rear sprockets. I believe that for the later 75/45 KV6 that the rear sprockets should be pretty much aligned when new belts are fitted, irrespective of power output - no not 100% spot on but close enough so that it is technically possible to fit the rear belts with the front tools in place (just about!), which I achieved.
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20th August 2018, 09:19 | #17 | |
This is my second home
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This is what he wrote Colin, and he mentions fixed marks on rear pulleys and the 190 engine:
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20th August 2018, 21:23 | #18 |
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MG ZT 190+ (Development car), mg zt 190SE (Twilight), MG ZS 180 Join Date: Nov 2017
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Thank you all, for the brilliant technical info.
I have tried to find a 190 stamped on the head, but I cannot seem to find it anywhere. All being well and work permitting, i値l try and change the belts in the next couple of days, utilising all your great advice. I値l keep you posted on how it goes! Regards Matt |
24th August 2018, 20:36 | #19 |
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Thought I would post a quick update.
After a lot of checking and then double checking, and an odd bit of blasphemy I have managed to change the belts on my mg zt. I did keep to the plan of marking the belts and sprockets for reference points and it paid off. Although I did use the locking tools for the main job in hand. My mg Zt had been miss timed to the standard 2.5 v6 settings and also the 14 year old primary timing belt had stretched to the point that the tensioner had just about reached its stop and was letting it slacken off. Having purchased the car like this, it was a good decision not to start or drive it until I had changed the belts, so crisis avoided. Once aligned with the correct 190 locking tool all my rear camshaft belt marks lined up perfectly. And with my markings, both front camshaft where exactly 1 tooth out (approx 4 degrees) out on both sides. Also by counting the belt teeth between my markings also help confirm that I was not 1 tooth out either way when I fitted the new belts. Sd1too thanks for the gen about setting the tensioner pulley, that I certainly would of over looked if you had not of mentioned it. But anyway thanks to SD1too, Phil-T4, marinabrian, mh007, coups, chris75, bolin and Mike Nocs for brilliant advice, it certainly helped guide me through the job in hand. Regards Matt |
25th August 2018, 08:22 | #20 | |||
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Thanks for the report Matt; it's very useful to all of us.
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So I don't actually think that your belt had stretched Matt. If it had, to the extent you describe, the enlarged teeth would have popped out of the sprocket slots long ago. Also, if your 14 year old belt had stretched, why hadn't mine which was 19 years old? The difference is that my belt & tensioner hadn't been touched since the car left the factory. Quote:
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Simon
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"Whatever is rightly done, however humble, is noble." Sir Henry Royce. |
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