phil@amd70.UUCP (Phil Ngai) (05/11/84)
On a single sided drive, the pad can get worn and squeak. Replacing
the pad will eliminate the noise. They are not easy to get as far
as I can tell.
--
Phil Ngai (408) 749-5286 {ucbvax,decwrl,ihnp4,allegra,intelca}!amd70!philW8SDZ@SIMTEL20.ARPA (05/14/84)
From: Keith Petersen <W8SDZ@SIMTEL20.ARPA>
Date: Sat 5 May 84 11:50:04-PDT
From: Tim Gonsalves <Fat.Tag@SU-SIERRA.ARPA>
Subject: Q: Squeaky floppy drive
To: info-micro@BRL-VGR.ARPA
What would cause the head of a 5 1/4" floppy drive (Tandon 100-2)
to squeak (like the disc brakes on many cars) when the head is
seeking? This occurs intermittently, usually on long seeks, seems
independent of the disk. The same disks work fine on another
drive. Any remedies?
Tim Gonsalves,
Gonsalves@SU-Sierra.Arpa
Charlie Strom sent a message some time ago that may provide the
answer:
Date: 6/17/81
From: Charlie Strom
To: All
Re: Shugart disk drive lubrication
I recently received some valuable info re lubrication of
Shugart 8" drives, prompted by intermittant squeaking from
a drive! Carefully, spray a small amount of aerosol sili-
cone lubricant on the lead screw (without getting it all
over the place!) I was amazed at the noise reduction I saw
immediately. According to my source, Shugart has done this
themselves in spite of no mention in service manuals. It
certainly hasn't hurt my drive operation. Don't use a
lubricant with any petroleum base... pure silicone (food
grade) only! The brand I have is called Sprayway, from
Sprayway, Inc., Addison, Ill 60101.mikey@trsvax.UUCP (05/24/84)
#R:sri-arpa:-70800:trsvax:53400029:000:798 trsvax!mikey May 24 10:11:00 1984 NO NO NO NO NO NO!!! Don't ever spray anything on the lead screw of a Shugart SA800. It WILL pick up dust and start to bind. The proper way of fixing the noise is to adjust the lead screw tension, and altough this means removing the lead screw, it is not difficult. You just have to re-align the drive when your done. Be careful not to loosen the stepper motor mounting plate or you'll upset the head penetration. As for lubricating the lead screw, first clean it with alcohol, and then if you must spray a clean cloth with silicon spray and WIPE it on the screw. Leave a film so thin you're not even sure it's there, otherwise it will collect dust and bind up. You can also do this to the guide rails for the head on the Tandon 5 1/4. The rails are what cause the squeek. mikey
zben@umcp-cs.UUCP (05/29/84)
All the "tuner cleaner" sprays I have tried leave a film that indeed collects dust and dirt and makes the component fail again a few weeks later. Recently I got (from a friend) a can of flourocarbon-based residue-free stuff. It really does the job on noisy potentiometers, and does *not* seem to leave a residue (though the can clearly states that it **will** mess up the ozone layer! Really!). One might try using some of this stuff on a critical application like a disk drive lead screw. Note - I have *not* as yet tried it in this application! Send me mail if you want me to lookup the brand name of the stuff. -- Ben Cranston ...seismo!umcp-cs!zben zben@umd2.ARPA