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How do I adjust the belt on the alternater - 2002 Toyota RAV4

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Most alternators are connected to the engine block by a metal bracket. One end of the alternator connects to a harness pivot point (a bit like your elbow), while the other connects to another bracket with a slot a few inches long (and curved). The bolt that goes through the curved/slotted bracket needs to be loosened (NOT removed), enough so you can pull the alternator in the direction which tightens the alternator belt... and when you get to that tight point, you quickly tighten the alternator tension bolt that you had previously loosened. (this is usually accomplished much easier with a tool that will allow you to easily pull the alternator tight while you tighten the bolt, or by having your Bestie there to to one action whilst you perform the other). After you are finished, you should check the belt's recommended tension parameter to make certain it's not too tight (which will cause the alternator bearing to wear-out quickly), or not too lose (which may cause the belt to squeak or your lights/power to dim with a drain on the alternator). Good luck. Normally the only pain with this job is the placement of the alternator. If it's on the top of the engine assembly (most are), then it will be easier. If it's not, then it won't... but this just means you'll have tighter quarters to work within.

Posted on Nov 28, 2014


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