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- From: amichiel@rodan.acs.syr.edu (Allen J Michielsen)
- Subject: Re: Disk drive sticktion(?)
- Message-ID: <1992Nov10.213621.2295@newstand.syr.edu>
- Organization: Syracuse University, Syracuse, NY
- References: <SKNKWRKS.92Nov6202143@sonny-boy.cs.unlv.edu> <blaby.721125727@sfu.ca> <1992Nov7.204232.9079@wl.com>
- Date: Tue, 10 Nov 92 21:36:21 EST
- Lines: 40
-
- In article <> schultp@wl.com (Paul Schultz) writes:
- >In article <> blaby@fraser.sfu.ca (John Edward Blaby) writes:
- >>sknkwrks@sonny-boy.cs.unlv.edu (Scott Alfter) writes:
- >>>Odd, all this talk of stiction and 3.5" drives...I always thought...
-
- >>Nope..It is a problem with Quantum 105 as well. It just happened to me
- >>tonight of all things. We had a major powerfailure here and ...(down)...
-
- >Can someone tell me exactly what is "stiction". I have an older Seagate
- >ST277N drive (circa 1987) and on rare occasions it won't come up to...
-
- Sticton is in 2 flavors, 2 spindle sticton, and head actuator stiction.
- Basically, the lubricant -fails- sortof. It either got to hot, and becomes
- waxey, or the lubricant carrier evaporates, drying out the oil, or the oil
- eventually just leaks out.
- When you have head actuator stiction, (less common in my experience) but
- this was the quantum problem, a common solution is to run the drive to hot,
- and run a head random exercisor program for several days straight. This tends
- to -spread- out the waxy lubricant, eventually scraping it out to the outside
- ends of the travel. At this point, stiction mostly and generally stops being
- a probl.
- Spindle stiction (more common in my experience) and commonly the seagate
- problem. Is a problem with the spindle bearing. Replacing the bearing is
- the only -fix-, although, I have had good luck putting 3 - 5 drops of good
- sewing machine oil on the bottom dust cover to the bearing, with the drive
- laying face down, letting the oil -soak- in, and spining up the spindle a
- bit to help -work- the oil in. After this fails, (or when this fails again
- because it will, eventually, probably sooner than later), I have then had
- good luck peeling off the bottom dust cover, remounting the drive
- upside down (VERY UNRECOMMENDED -but- hey it's junk at this point anyway)
- and if you stand the system unit on end, the drive won't be upsode down anyway
- (either way, be sure to backup the drive, and I recommend a LLF fur sure)
- Then in a flip top system, it's a trivial task to use a tool like a screw
- driver on the exposed end of the spindle bearing to -break- the stiction
- lose, without doing any more than popping open the top....
-
- al
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