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700/900 Series General Forum for the Volvo 740, 760, 780, 940, 960 & S/V90 cars |
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timing belt failureViews : 1858 Replies : 35Users Viewing This Thread : |
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Sep 18th, 2021, 10:46 | #18 | |
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Join Date: May 2012
Location: Lakenheath
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I would think the original belt would have been changed at 48k mile service. That suggests the second new belt was fitted at 107k according to your records. I wonder if it was retensioned after 600 miles as it should be? When retensioning, the engine must be at TDC on #1 (timed position), remove the rubber bung/grommet from the front face of the upper timing cover and with a socket on an extension bar, slacken the timing tensioner locknut. Allow the tensioner spring to tighten the belt then tighten the locknut again. The upper cover can be removed to do this but it's easier to just use the rubber bung. In terms of belt life, it varies a lot from engine to engine and if things like retensioning (if specified) aren't done then it can shorten the life of the belt. I don't know what you were told about the timing belt interval on the Golf but it's 40k miles, VW dropped it to that from 90000km (56k miles) and issued a Technical Bulletin to that effect : https://www.honestjohn.co.uk/forum/p...ex.htm?t=58972 Continental are still showing 90000km for the Golf IV, presumably they haven't seen the VAG TB on the subject! https://www.continental-industry.com...-intervals.pdf That aside, i would work on replacement at 40k miles or 4 years on your Volvo, whichever comes sooner rather than waiting for it to break again. For the cost of the belt, it would pay for itself in peace of mind if nothing else! My Rover is only on its second timing belt, the first one was changed at 96k as per the service schedule but also because the water pump started leaking (which it's designed to do at ~120k miles on that engine) so by rights, it's now overdue on a time basis but well within the mileage criteria having only done 18k on the new belt. My Volvo has never seen a timing belt in its life, nor will it. Checking the correct TB intervals and occasional inspection of the belt will help to prevent another breakdown in the future, just because a previous belt outlasted expectations doesn't mean to say the new one will, the recommendations are there for a reason!
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Cheers Dave Next Door to Top-Gun with a Honda CR-V & S Type Jag Volvo gone but not forgotten........ |
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