murphsubaru Posted August 31, 2005 Share Posted August 31, 2005 Is the large nut that holds the rotor on the hub a reverse thread; what size nut is it. I have a 99 Forrester all disk brakes. Thanks Quote Link to comment Share on other sites More sharing options...
ferret Posted August 31, 2005 Share Posted August 31, 2005 Do you need the Rotor off? or the Hub? Rotor is seperate. Here is a .pdf files. for the rear drive shaft which includes removing the hub. Quote Link to comment Share on other sites More sharing options...
murphsubaru Posted August 31, 2005 Author Share Posted August 31, 2005 I need to replace the rotors. Quote Link to comment Share on other sites More sharing options...
ferret Posted August 31, 2005 Share Posted August 31, 2005 Rotor pdf..I try to upload this one and it doesn't get there....anyway, rotor is seperate, not part of the hub. Quote Link to comment Share on other sites More sharing options...
murphsubaru Posted August 31, 2005 Author Share Posted August 31, 2005 But, I need to remove the large nut to get rotor off. Is that a reverse thread? Thanks. Quote Link to comment Share on other sites More sharing options...
danz75 Posted August 31, 2005 Share Posted August 31, 2005 But, I need to remove the large nut to get rotor off. Is that a reverse thread? Thanks. You shouldn't need to remove the nut in order to remove the rotor. Once the caliper is removed, the rotor should be loose and only held back by the caliper bracket. There are 2 bolts that hold the bracket to the hub. Once that is out, you should be able to slide the rotor off. That's the way for my 03 OBW. Quote Link to comment Share on other sites More sharing options...
1 Lucky Texan Posted August 31, 2005 Share Posted August 31, 2005 It may just be kinda stuck with a layer of rust, gently bang it with a big hunk of wood or a hammer with a piece of wood to protect it. Then, you wil see it is loose but, as said, likely captured by the caliper bracket. Support the bracket with some wire or twine tied ut to the spring otr something and then remove the bracket bolts. The string will prevent the caliper from stressing the brake hose. Quote Link to comment Share on other sites More sharing options...
mwatt Posted August 31, 2005 Share Posted August 31, 2005 But, I need to remove the large nut to get rotor off. Is that a reverse thread? Thanks. You're right, the large nut needs to come off to remove the rear rotors (and the caliper bracket has to be removed, too). The rear rotors are not the "slip-on" design like the front ones. I'm fairly certain that the bolt requires a 32 mm socket. It is not reverse-threaded. Quote Link to comment Share on other sites More sharing options...
mattocs Posted August 31, 2005 Share Posted August 31, 2005 I've used a 1 1/4 inch socket to get mine off. Quote Link to comment Share on other sites More sharing options...
Legacy777 Posted August 31, 2005 Share Posted August 31, 2005 You're right, the large nut needs to come off to remove the rear rotors (and the caliper bracket has to be removed, too). The rear rotors are not the "slip-on" design like the front ones. I'm fairly certain that the bolt requires a 32 mm socket. It is not reverse-threaded. That is NOT TRUE!! The rear rotors are most definitely slip on like the front. All the newer subarus are like this. That large nut holds the axle to the hub. You do NOT need to remove that to replace the rotor. Make sure you have removed the caliper & caliper bracket. There are two bolt holes on the rotor that you can screw a bolt in to help free it from the hub. I don't recall the thread pitch/size. If you don't plan to keep the rotors, bang on the front with a hammer to help loosen the rust. Quote Link to comment Share on other sites More sharing options...
1 Lucky Texan Posted September 1, 2005 Share Posted September 1, 2005 does your rear brake system resemble this?; http://www.ravensblade-impreza.com/modifications/brakes/rotors/rotors.html Carl Quote Link to comment Share on other sites More sharing options...
Adam N.D.J. Posted September 1, 2005 Share Posted September 1, 2005 Unless Subaru changed something things drastically between 94 (the most recent I've worked on) and your 99. The then disk in drum can be kind of tricky. You have to have the "E-brake" off in order to take off the rear disk/drum assembly. Also, the shoes can wear grooves in the drum, and a layer of rust that builds up in between the hub and disk plate that will essentially lock the two together. If you have the two small holes in the plate assembly, you should notice that they are threaded. What you do is put two bolts in there, and evenly tighten them up, what this will do is pull the rotor assembly away from the hub, and "pop" that rust layer, making it easy to get off. Quote Link to comment Share on other sites More sharing options...
Setright Posted September 1, 2005 Share Posted September 1, 2005 I would like to express my support for the three previous posts. And just to be sure: THE HUB NUT DOES NOT NEED TO COME OFF! Quote Link to comment Share on other sites More sharing options...
mwatt Posted September 1, 2005 Share Posted September 1, 2005 That is NOT TRUE!! The rear rotors are most definitely slip on like the front. All the newer subarus are like this. That large nut holds the axle to the hub. You do NOT need to remove that to replace the rotor. Make sure you have removed the caliper & caliper bracket. There are two bolt holes on the rotor that you can screw a bolt in to help free it from the hub. I don't recall the thread pitch/size. If you don't plan to keep the rotors, bang on the front with a hammer to help loosen the rust. So I went and looked at mine ('98 Outback LTD and '99 Legacy GT) last night after I read your post.....Well I'll be damned.....I sure messed that advice up, didn't I? I guess as the metal has discolored over the years, it gave me the impression that the rotor and hub were one piece. Thanks for opening MY eyes, too. And my apologies for giving everyone wrong advice.... Quote Link to comment Share on other sites More sharing options...
1 Lucky Texan Posted September 1, 2005 Share Posted September 1, 2005 So I went and looked at mine ('98 Outback LTD and '99 Legacy GT) last night after I read your post.....Well I'll be damned.....I sure messed that advice up, didn't I? I guess as the metal has discolored over the years, it gave me the impression that the rotor and hub were one piece. Thanks for opening MY eyes, too. And my apologies for giving everyone wrong advice.... I personally have learned a LOT of good information by posting what I thought was right! lol! Trust me, sometimes on the 'net , folks will keep quiet - UNTIL questionable information is posted - THEN come the links, videos, notarized references, government experts, eyewitness accounts, etc. to the way it really is! In fact, instead of asking how much the stock wheels weigh on an '06 WRX - I shoulda posted that I weighed one and it was 30lbs. THEN someone would call me an idiot and post the actual weight. hah! I'm gonna try that over at nasioc right now! Carl Quote Link to comment Share on other sites More sharing options...
murphsubaru Posted September 1, 2005 Author Share Posted September 1, 2005 I want to thank everyone for their info, you have been a big help!!! Quote Link to comment Share on other sites More sharing options...
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