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#1
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My idle pulley assembly for the A/C has fallen to pieces (bearing assembly slipped out), shredding the belt and pushing the pulley into the timing belt cover.
![]() ![]() Searching the threads, I've found where this happened to a few other people, possibly because the bolt wasn't tight (though I think mine was when I took it off) or the pulley was on backwards somehow. Or maybe it just wore out. Anyway, I think I'll be replacing the whole pulley assembly. Anyone have one they want to sell?
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--Ross (earthkin) RIP: '92 SVX LS-L AWD, black over claret Nearly gone: '92 Legacy SW, 353k miles '00 Impreza Outback Sport, 'silverthorn met titanium,' 134k miles |
#2
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I don't recall any hole in the timing belt cover behind the AC idler pulley. It probably wouldn't hurt anything to postpone replacement of the cover 'til the next timing belt service.
dcb |
#3
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There's not supposed to be a hole behind the A/C idler pulley. The place you're indicating on the drawing is a partial convex dome over the water pump pulley.
![]() A hole in that cover may not be so bad for a short while, but you should make sure there is no debris from the A/C pulley and belt rattling around the timing belt. You can remove all of the front timing belt covers fairly easily (you'll just need to remove the outer crankshaft pulley and the tensioner under the P/S pump). It's not nearly as bad as removing the crankshaft gears [correction — camshaft gears] . You may find that you only need to clean and vacuum out the timing belt area. Then you might get by gluing on a cover plate over the hole. On the other hand, if your timing belt has been chewed up, you may want to go ahead and replace it.
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David C. 1996 Laguna Blue Pearl SVX L AWD See my home page for SVX radio install/removal instructions and wiring harnesses Last edited by SVXdc; 10-04-2007 at 09:33 AM. |
#4
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Okay, now that I look at the SubaruParts.com illustration again, I realize that the "hole" it shows is in a different position, shown located on the horizontal lines on the cover (mine is up higher).
![]() Thanks, Ross
__________________
--Ross (earthkin) RIP: '92 SVX LS-L AWD, black over claret Nearly gone: '92 Legacy SW, 353k miles '00 Impreza Outback Sport, 'silverthorn met titanium,' 134k miles |
#5
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Debris?
The timing belt looks clean. The pulley wheel hadn't quite gone back far enough to damage anything (I have a real nice view hole now to look in!
![]() ![]() I'm a pretty basic-type mech ![]()
__________________
--Ross (earthkin) RIP: '92 SVX LS-L AWD, black over claret Nearly gone: '92 Legacy SW, 353k miles '00 Impreza Outback Sport, 'silverthorn met titanium,' 134k miles |
#6
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Quote:
If it were my car, I'd pull the covers to make sure the timing belt chamber is clean and look over the entire belt. It's not that hard. With the A/C belt and tensioner off, you're already 1/3 of the way there. Until recently, I hadn't done much more than change my oil myself, but a couple of weeks ago replaced the water pump (which required removing and reinstalling the timing belt). See this post (#9) for helpful links. BTW, the "Unorthodox Racing Pulley Installation" guide includes a picture of a new front timing belt cover. You'll just need a helper to lock the flywheel while you remove the crankshaft pulley, then a big torque wrench to bolt it back on. Find a friend who's done similar car work and offer some beer and/or pizza.
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David C. 1996 Laguna Blue Pearl SVX L AWD See my home page for SVX radio install/removal instructions and wiring harnesses |
#7
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Okay, David C, I guess you are right about checking for debris. There were some wicked metal curves off the race for the bearing -- probably enough to slice the timing belt at high RPMs if any got in with the belt.
![]() I'll check out the link.
__________________
--Ross (earthkin) RIP: '92 SVX LS-L AWD, black over claret Nearly gone: '92 Legacy SW, 353k miles '00 Impreza Outback Sport, 'silverthorn met titanium,' 134k miles |
#8
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probably the idler bearing just wore out
[QUOTE=earthkin;497765]The timing belt looks clean. The pulley wheel hadn't quite gone back far enough to damage anything (I have a real nice view hole now to look in!
![]() ![]() there would be no reason to disrupt the idler and bracket that controls the tension on the ac belt to replace either the ac belt or even the timing belt. However we never know if our "mechanics" would know that. It is simply removed as a unit if necessary or just loosen a couple of bolts and retighten to replace the ac belt. The idler bearing does wear out but should make an audible sound as a warning before it comes apart. Much better to replace the cover and get it sealed properly. Good luck Keith. Last edited by kwren; 10-04-2007 at 11:32 AM. |
#9
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Bearing wore out...
Sounds like you are right about the bearing just wearing out. My daughter had complained about the noise, which I thought was the A/C compressor. I had her take it into a shop near where she goes to college, and they said the couldn't hear the noise!
![]() ![]() ![]() I told her to never take it back there. Fortunately, all they actually did was an oil change, and it hasn't leaked out yet (hopefully they didn't strip the plug bolt! ![]()
__________________
--Ross (earthkin) RIP: '92 SVX LS-L AWD, black over claret Nearly gone: '92 Legacy SW, 353k miles '00 Impreza Outback Sport, 'silverthorn met titanium,' 134k miles |
#10
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I'm thinking while I'm at it, I should at least replace the crankshaft pulley & the power steering pulley, so I don't just have to do the whole thing over again in the next year. But what about the other idler pulleys that are involved with the timing belt?
![]() On the other hand, my daughter keeps saying how much she loves the car. On the other other hand, I'm sick of sinking money into it & told her I'm getting rid of it next time it has a major breakdown (last one was tranny overhaul about 1 1/2 years ago, still under warranty for about another 6 months). I'm probably stuck paying for a car for another 4-5 years, since she plans on doing grad school and is doing great in school now, so I'm willing to invest in her (not sure about the SVX, though). Though if I were to buy another car for her, it would probably be a more expensive one (e.g. $8000), which would buy a lot of repairs to the SVX... I may be talking myself into this.
__________________
--Ross (earthkin) RIP: '92 SVX LS-L AWD, black over claret Nearly gone: '92 Legacy SW, 353k miles '00 Impreza Outback Sport, 'silverthorn met titanium,' 134k miles |
#11
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Quote:
Once you get the outer cover off, if the timing belt looks OK and none of its gears or idlers are damaged or pitted, you probably don't need to worry about any of those. The idlers on mine had some discoloration (from the belt, I think), but that cleaned off fairly easily. Incidentally, SubaruGenuineParts.com has different drawings (and slightly lower prices on parts).
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David C. 1996 Laguna Blue Pearl SVX L AWD See my home page for SVX radio install/removal instructions and wiring harnesses |
#12
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Thanks everyone for all the help!
![]() ![]() ![]() I've ordered a 1 piece crankshaft pulley (OEM size) from motorsportwarehouse.com ($140 + shipping), and new idle pulleys for the P/S & A/C belts. Also a new center timing belt cover. Thanks David C, you were right about www.subarugenuineparts.com -- they are more reasonable for prices & shipping. So I went with them for the OEM parts. The single piece aluminum crankshaft pulley was a tough decision after reading all the debate in the forum (there were some good points about the OEM part, too), but I decided there is probably less chance of the single piece pulley disintegrating, so that was the final determiner for me. Hopefully this will be the last repair for a while. We'll see what happens when I clean off the Crank Angle Sensor, since I also have a engine code 11 for that. I read a post where someone fixed this by cleaning the Sensor, and with my dirty engine, ![]() ![]()
__________________
--Ross (earthkin) RIP: '92 SVX LS-L AWD, black over claret Nearly gone: '92 Legacy SW, 353k miles '00 Impreza Outback Sport, 'silverthorn met titanium,' 134k miles |
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