Front Rotor Swap.. must break hub seal? - Defender Source
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  #1  
Old March 13th, 2010, 01:28 PM
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Front Rotor Swap.. must break hub seal?

I've got a 97 D90 with just under 60K. My front rotors (and pads front/back) need to be changed. I was told that on a 97 D90 I don't need to get into the hub itself when putting in new front rotors. Is this true? Do they essentially just bolt on?

I was also suggested that unless the bearings are making any noise or there is play then why change them. However if ultimately the seal needs to be broken when putting on new front rotors I guess I might as well put in new bearings (?).

Thoughts?
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Old March 13th, 2010, 01:46 PM
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the rotor bolts to the back of the hub, so you have to remove the hub anyway. It's probably a good time to repack the bearings and put new seals in, since they are cheap and you have the hub off anyway. I did the job for the first time last summer and did not find it too difficult. I also put a little bit of antiseize on the mating face of where the rotor meets the hub to make future removal easier.

However, technically, you do not need to "get into" the hubs, I believe it is recommended to repack the bearings every 30K so yours are probably due.
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Old March 13th, 2010, 05:41 PM
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After looking more closely that makes sense. I'll go ahead and order the bearings and do it right. Why do these projects always grow like a virus!? Arrgh! I appreciate the advice.
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Old March 13th, 2010, 05:52 PM
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yeah its a must to repack/seal the bearings. You might as well go ahead and pull the entire swivel down and check the preload on both sides.
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Old March 13th, 2010, 07:32 PM
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I rarely repack the bearings. If the grease loooks good (I use synthetic) and not water contaminated, I jsut put some more grease on it and let it go.
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Old March 13th, 2010, 08:23 PM
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Just don't forget that you're going to need both a hub tool to get the hub off, as well as 12pt sockets (can't remember the size... 13mm? 14mm?) to get the rotor off the hub.

-Hans
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Old March 13th, 2010, 08:32 PM
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The bearings are Timken Set 37. Usually not hard to find.
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Old March 13th, 2010, 09:24 PM
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Thanks all for the details on this. If I decide not to tackle it myself what should I expect in labor costs/time for rotors, pads, bearings/seals all for front and back?
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Old March 13th, 2010, 10:05 PM
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4ish hours
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Old March 15th, 2010, 01:12 PM
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Timken SET37, SKF BR37 or FAG KIT38, about $13 locally, 2 per hub.
Seal is RTC3511
You can clean and inspect the bearings and only replace as needed.
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