I concur with Mark, if nothing seems to do the job, replace the damper lever cloth.... David Ilvedson, RPT Pacifica, California ----- Original message ---------------------------------------- From: "Mark Cramer" <Cramer at brandonu.ca> To: "College and University Technicians" <caut at ptg.org> Received: 3/22/2006 10:28:07 AM Subject: Re: [CAUT] pedal squeal >Hi Don, >I'm coming in a little late on this one, so pardon me if I missed some >suggestions. >In the insta-cure category, I stand the action on end, use the key-slip (for >instance) to press all the levers away from the rod, then drizzle McLube all >the way down the rod. You can see it travel down, and should allow it to dry >before releasing. >It offers a decent coating thickness and has been the one-timer for every >situation I can think of. >The long term repair is to replace the cloth... if it's glazed, or glue >infused, the noise will return. Having been a travelin' man myself for a >number of years can tell you it's not that big a deal to fit into the day's >tuning schedule: >1.) Pack three thicknesses of action cloth (it's usually the "medium") , a >cutting-mat, sharp blades etc. >2.) Begin at the client's home first thing, number and remove the levers, >soaking each cloth at the glue joint as you go (wall-paper remover & >syringe), and placing levers cloth-side "up." >3.) Make another pass with the soaking solution, and hopefully by the end of >this rotation, they will begin to peel (unless it's a modern glue). >Otherwise, go ahead to #5 and repeat the soak & peel test later. >4.) When the cloths are removed, use a scraper to clean the surface, then >lay a Dampp-Chaser bar over the row of levers, at the glue lines and plug it >in. (will reverse the flow of moisture into the wood by creating a gradient) >5.) Now you should be able to pre-cut your cloth, and head to your next >tuning. >After lunch, the levers should be quite dry and ready for glueing in the new >cloth. >Note: The cloth is glued at each end, but not in the middle, back of where >the spoon contacts. (if it was, then you've discovered where the noise came >from.:>) >6.) I would simply use some small spring clamps (Dollar store item) over >each glue line and rotate them in leap-frog fashion as you go. >Hint: In the shop we try get some "stretch" in the material, by >glueing/clamping one end, allowing it to dry, then the other. (and this, >only in the course of an action rebuilding) >7.) By the time the last section is in clamps you can begin re-installing >the first ones. >The other items include: >1.) Re-bushing the hangers; fit the cloth, size the new bushings with an >alcohol-soaking, then when dry, coat the pins with Super-lube. (or other >high-load synth. grease) >2.) Fine steel-wooling of the rod, followed by a heavy slip-coating (I use >the grey-ish McLube spray, don't recall the number) >3.) Inspect the trapwork down to the pedal (save a 4 hour call back :>( >This service should be easy to accomplish within two service calls (1.5 - 2 >hours each), one in the morning and one in the afternoon, with plenty of >time to get a few other tunings in. >Much as I love tuning, many times I enjoyed the variety of one or two >"non-tuning" service slots during a day-trip. >Enjoy! >Mark Cramer, >Brandon University >-----Original Message----- >From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org]On Behalf Of Don >Sent: Wednesday, March 22, 2006 5:28 AM >To: College and University Technicians >Subject: Re: [CAUT] pedal squeal >Hi Keith, >It is not the hangers--the squeal is from the rod against each of the >dampher levers. I've already burnished in telfon powder--which worked for a >few months. >At 09:20 AM 3/22/2006 -0800, you wrote: >>Isolate the sound to those brackets that hold the rod or the lift felts. >If it's the lift felts I would >>try TFL 50 spray stuff. Replace the felt if the bracket is making the >squeal. The pressure fron >>the dampers may be pressuring the rod backagainst the action rail. >> >> >>Keith >> >>On Wed, 22 Mar 2006 08:30:27, Don wrote >>> Hi, >>> >>> It is the rod against the dampher lever felts. >>> >>> At 06:19 AM 3/22/2006 -0800, you wrote: >>> >Usually it's not the rod itself as it doesn't go through the key bed but >>> >comes in from the back so there is no guide bushing. Sometimes the >punchings >>> >that isolate the moving parts are worn and you can use a leather >replacement >>> >in stead of a balance rail punching. Tighten up things so the pedal >doesn't >>> >rub against the case. The lube that works is the protek grease. >>> > >>> >kpiano >>> > >>> >----- Original Message ----- >>> >From: "Don" <pianotuna at yahoo.com> >>> >To: "College and University Technicians" <caut at ptg.org> >>> >Sent: Wednesday, March 22, 2006 8:03 AM >>> >Subject: [CAUT] pedal squeal >>> > >>> > >>> >> Hi all, >>> >> >>> >> Has anyone had long term success with treating a squeal from the piano >>> >> dampher lift rod (upright)? If so what was used? >>> >> >>> >> This is a teaching piano. Silence is golden. >>> >> >>> >> Regards, >>> >> Don Rose, B.Mus., A.M.U.S., A.MUS., R.P.T. >>> >> Non calor sed umor est qui nobis incommodat >>> >> >>> >> mailto:pianotuna at yahoo.com http://us.geocities.com/drpt1948/ >>> >> >>> >> 3004 Grant Rd. REGINA, SK, S4S 5G7 >>> >> 306-539-0716 or 1-888-29t-uner >>> >> >>> >> >>> >> >>> > >>> > >>> > >>> > >>> >-- >>> >No virus found in this incoming message. >>> >Checked by AVG Free Edition. >>> >Version: 7.1.385 / Virus Database: 268.2.6/287 - Release Date: 3/21/2006 >>> > >>> > >>> >>> Regards, >>> Don Rose, B.Mus., A.M.U.S., A.MUS., R.P.T. >>> Non calor sed umor est qui nobis incommodat >>> >>> mailto:pianotuna at yahoo.com http://us.geocities.com/drpt1948/ >>> >>> 3004 Grant Rd. REGINA, SK, S4S 5G7 >>> 306-539-0716 or 1-888-29t-uner >> >> >> >>-- >>No virus found in this incoming message. >>Checked by AVG Free Edition. >>Version: 7.1.385 / Virus Database: 268.2.6/287 - Release Date: 3/21/2006 >> >> >Regards, >Don Rose, B.Mus., A.M.U.S., A.MUS., R.P.T. >Non calor sed umor est qui nobis incommodat >mailto:pianotuna at yahoo.com http://us.geocities.com/drpt1948/ >3004 Grant Rd. REGINA, SK, S4S 5G7 >306-539-0716 or 1-888-29t-uner
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