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Date: Sun, 18 Apr 2004 07:22:22 -0400
From: "Fred W." <Fred.Willsnospampam myrealbox.com>
Subject: Re: Maintenance


"Johannes H Andersen" <johsnospamfitter_0_0_0_0_.com> wrote in message news:40817988.19E90E31nospamfitter_0_0_0_0_.com... > > > Max wrote: > > > > I thought the chain was to be replaced every 250,000km (150k miles)? > > There is no fixed mileage for the chain. But should be replaced if it > is noisy AND worn. Notice how carefully I wrote this since it is > controversial if it need replacement when noisy. Replacing the chain > at a dealer garage is a big and costly operation, although that should > be factored into by the high mileage for the chain. Hence when buying > secondhand it is important to know status. It is worth while to replace > the sprocket wheels at the same time. Not sure if it applies directly to newer models, but early 90's 2.3L engines, the test of the amount of wear for the chain is to remove the tensioner (after first removing 6the pressure spring) and look at how far extended it is. There is a spec for it which for my '92 and '93's was 11mm. If the tensioner is extended that much or more you will want to replace the chain. The maximum tensioner extension is a little more than this much (maybe 15mm?) so your chain is still under tension at 11mm, but it does not have much longer to go. In my '92 with questionable previous maintenance, the chain tensioner was maxed out at 80k miles. The chain was flopping around and making a lot of noise. I had to replace it and all the guides, as well as the sprockets and chain for the balance shafts. In my daughter's '93, the tensioner was right at 11mm at 120k miles, (again, unknown earlier maintenance) I went ahead and replaced the chain when I had the head off for a head gasket, but I'm guessing it would have been OK for another 50-60 k miles. The key is regular oil changes and not overheating the engine (which damages the guides). -Fred W

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