I have successfully repaired a loud Profile 10 MB (Seagate ST 412) by pulling off the flywheel of the HDU with a pull-off tool. You can get all kind of pull-off tools in almost any size at your local tool shop. To test the proper size of the pull-off tool, take your HDU with you if you enter the shop. The fly wheel is not fixed with a normal screw, but only pressed on the spindle axis and secured with a kind of epoxy glue. Be very careful if you pull off the flywheel!! You can easily damage the big permanent magnets inside the flywheel which is the rotating part of the main HDU motor. You have to pull the flywheel absolutely straight from its axis! I used a pull-off tool in the form of a tripod to do this job. If the flywheel is completely removed you can see the main bearings of the drive and it's very easy to lubricate them with a special lubricant ( don't use normal oil!) for bearings- I use WIK 700 or GP Hypoid 90 from Esso. But you can use any similar lubricant used for VHS Video Cassette Recorders (lubricating the video head scanner assembly bearings). Only a few small drops are necessary to lubricate the "dry" bearings!
I have used Stabilit Express from Henkel (Methacrylatemethyl glue) for refixing the flywheel. Dont' use too much glue! Remove any fat or oil from your flywheel first! Helmut on 08.09.2005 4:44 Uhr, Jason Perkins at [EMAIL PROTECTED] wrote: > Is there any way to get at the bearings of the drive? My profile is easily > the loudest drive I've ever heard, save the 2 gb Barracuda I threw on the > floor repeatedly and then powered up (it dances across the floor now! Don't > worry, it had many bad sectors before I 'stressed' it.) I took the brush > totally off for testing, it didn't get any quieter, so my guess is it has to > be the bearings. Have you ever oiled a frozen computer fan to bring it back > to life, then listened as the little bits of dirt hit the bearings, and it > makes a little ting sound? My drive does that all on its own :o > > -Jason > ----- Original Message ----- > From: "James MacPhail" <[EMAIL PROTECTED]> > To: "LisaList" <lisalist@mail.maclaunch.com> > Sent: Wednesday, September 07, 2005 9:50 PM > Subject: Re: Lisa + Profile and SCSI cable? > > >> >>> Is there a way to quiet a ProFile, perhaps by replacing a fan? >> >> The ProFile has no fan. >> >> Usually the ProFile's "jet-engine" noise can be nearly eliminated by >> adjusting the static brush. >> >> The static brush touches the bottom end of the spindle axle, and after >> some >> period of wear, can vibrate quite loudly. >> >> If you (carefully) remove the hard disk assembly from the ProFile chassis, >> and remove the circuit board on the bottom, you will see the static brush. >> A small tweak sideways is usually all that is required to change the point >> of contact and stop the excessive noise. >> >> Make sure that the brush is still making contact with the axle so that it >> can do its job, and do NOT "lubricate" the point of contact. >> >> HTH, >> >> James >> >> James MacPhail "Think not of engineering as art, >> [EMAIL PROTECTED] but of art as engineering" >> Sigma Seven Systems Ltd. >> [EMAIL PROTECTED] <http://SigmaSevenSystems.com> >> >> >> >> -- >> LisaList is sponsored by <http://lowendmac.com/> and... >> >> Shop buy.com and save. <http://lowendmac.com/ad/buy.com.html> >> >> Support Low End Mac <http://lowendmac.com/lists/support.html> >> >> LisaList info: <http://lowendmac.com/lists/lisa.html> >> --> AOL users, remove "mailto:"; >> Send list messages to: <mailto:lisalist@mail.maclaunch.com> >> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> >> For digest mode, email: <mailto:[EMAIL PROTECTED]> >> Subscription questions: <mailto:[EMAIL PROTECTED]> >> Archive: <http://www.mail-archive.com/lisalist%40mail.maclaunch.com/> >> >> iPod Accessories for Less >> at 1-800-iPOD.COM >> Fast Delivery, Low Price, Good Deal >> www.1800ipod.com >> -- LisaList is sponsored by <http://lowendmac.com/> and... Shop buy.com and save. <http://lowendmac.com/ad/buy.com.html> Support Low End Mac <http://lowendmac.com/lists/support.html> LisaList info: <http://lowendmac.com/lists/lisa.html> --> AOL users, remove "mailto:"; Send list messages to: <mailto:lisalist@mail.maclaunch.com> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive: <http://www.mail-archive.com/lisalist%40mail.maclaunch.com/> iPod Accessories for Less at 1-800-iPOD.COM Fast Delivery, Low Price, Good Deal www.1800ipod.com
