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  #1  
Old 07-09-2006, 10:02 PM
redsvx94 redsvx94 is offline
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Cam seal change question.

Hi All,

I'm trying to change the cam and crank seals while I'm doing the timing belt and water pump.

I loosened the left cam sprocket bolt by setting the breaker bar on the bolt and banging it with hammer, thereby mimicking the effect of impact wrench. While I first set them up to an alignment position, after loosening the bolt, the cams are a little bit rotated. I tried to put them back to alignment position by rotating the right cam (since old timing belt is still on), but I wonder that if the left camshaft and cam sprocket slips with respect to each other, since now bolt is loose, than I may have messed up. I'd think that Subaru wouldn’t design a critical system like that, but I would like to make sure….

Last edited by redsvx94; 07-09-2006 at 10:34 PM.
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Old 07-09-2006, 10:31 PM
redsvx94 redsvx94 is offline
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Deleted. Sorry.
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Old 07-10-2006, 01:39 PM
redsvx94 redsvx94 is offline
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So can any one let me know, whether a cam sprocket would rotate without the corresponding camshaft rotating with it when the bolt on the cam sprocket is loose? Sorry my question is not clear, this is my first time to working with that parts of car.

Thanks!
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  #4  
Old 07-10-2006, 02:04 PM
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While there are some engines that have keyless cam sprockets the SVX isn't one of them. If you were to remove the sprocket you'd find a woodruff key and slot combination to locate the sprocket/cam.
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Old 07-10-2006, 02:12 PM
redsvx94 redsvx94 is offline
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Thanks again, Beav.
Am I relieved to hear that..
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Old 07-11-2006, 01:48 AM
redsvx94 redsvx94 is offline
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O.K. I have a couple more questions.
How do I remove the woodruff key and crank sprocket from crankshaft? Some posts state the sprocket should slide right off. When using just hand to pull it off, mine doesn't.

I can see the key and key way on sprocket and shaft. And I don't think the sprocket is stuck to the shaft, since if I tried to rotate it, it has a slightly slack. I loosened the pulley bolt pretty straightforwardly, and the bolt looked good as new.

Should I press the key to some direction with some tool or something?

The other question is, should I drain the engkine oil before taking out the crank and cam seal or would oil pour out when I remove the seal?

Thanks for the helps!
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Old 07-11-2006, 10:04 PM
redsvx94 redsvx94 is offline
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Any idea?

Thanks.
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Old 07-12-2006, 05:20 AM
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If you have the bolt off, the sprocket will just come off, might take some light prying, as it's been on there a long time.

The woodruff key doesn't need to come out to do the seal, once the sprocket is off, the sealing surface is larger than the height of the woodruff key.
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Old 07-12-2006, 04:01 PM
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Yeah, what he said. ^^^

Sometimes oil will turn to shellac and cause the pulleys to stick or moisture will collect and start a little surface rust. Either way put the center bolt back in about 4-5 threads, place something behind the pulley and pry forward while tapping the end of the center bolt - that should help you 'walk' the pulley off. Don't forget to remove the bolt to get it all the way off. <grin>

A little oil might come out but only a thimble-full or so.
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Old 07-12-2006, 06:31 PM
redsvx94 redsvx94 is offline
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O.K. I will try that!
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Old 07-13-2006, 10:59 PM
redsvx94 redsvx94 is offline
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O.K. The crank sprocket is out. Thanks Beav!

I have a quick question about your trick on taking out these seals.

I'm supposed to drill on the part of the seal that is exposed to outside and penetrate that metal part behind the rubber on surface, right? Is there anything behind that metal part? If not, I guess don't have to worry about going over that metal part of seal.
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Old 07-22-2006, 11:39 PM
redsvx94 redsvx94 is offline
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Sorry edited.

Last edited by redsvx94; 07-22-2006 at 11:42 PM.
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Old 07-26-2008, 12:06 PM
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Re: Cam seal change question.

Are any of us familiar with the Autozone "loan a tool program"?, I stumbled across it today AND, they have an adjustable cam sprocket tool to loan!!!!, just leave a deposit, get it back when you return the tool.

Autozone tool # OEM27115
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  #14  
Old 07-26-2008, 01:07 PM
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Re: Cam seal change question.

Be careful taking the seal out. It is easy to score the cam shaft and then the cam shaft has to be replaced.
Been there... Done that.

Careful!

Keith
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Old 07-26-2008, 01:20 PM
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Re: Cam seal change question.

You may already know, but to install the timing belt if you remove the idler roller that is near the bottom center that the belt rides against, you can literally "lay the belt in place", properly aligned. That is of course after you remove the belt tensioner.

Putting it back together the tensioner would go back on after the belt is in place and the after roller is reinstalled.

Careful with putting the roller back on with cross threads.

You may already know all this but on the outside chance that it might help someone, I am submitting the information.

Keith
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