Pianotech

There are numerous Jansen artist benches (with Steinway knobs) in the music building that are loose. When servicing one, I found all the shoulder bolts are cross-threaded and almost impossible to remove. First, I can't believe this could happen and spoke to Paul Jansen about it who had likewise disbelief as they are hardened tool steel. But the fact remains that they are boogered-up. I fear I am going to run into this again as I continue repairing the rest. The couple I have already done did not have this problem, but it is early in the process of many. Has anyone else encountered this, and if so, how did you manage to get them out? If anyone has had experience with this, how you solved this would be appreciated. FYI - when I did *finally* get them out, I chased the female threads with new shoulder bolts I had spares of, which worked, but they were sacrificed in the process. So I am going to purchase a tap to chase the boogered female threads. Thanks! Dave

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Dave Conte

University of Tennessee
Knoxville TN
817-307-5656
Owner: Rocky Top Piano
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Original Message:
Sent: 4/29/2022 10:08:00 AM
From: Dave Conte
Subject: Jansen Artist benches

There are numerous Jansen artist benches (with Steinway knobs) in the music building that are loose. When servicing one, I found all the shoulder bolts are cross-threaded and almost impossible to remove. First, I can't believe this could happen and spoke to Paul Jansen about it who had likewise disbelief as they are hardened tool steel. But the fact remains that they are boogered-up. I fear I am going to run into this again as I continue repairing the rest. The couple I have already done did not have this problem, but it is early in the process of many. Has anyone else encountered this, and if so, how did you manage to get them out? If anyone has had experience with this, how you solved this would be appreciated. FYI - when I did *finally* get them out, I chased the female threads with new shoulder bolts I had spares of, which worked, but they were sacrificed in the process. So I am going to purchase a tap to chase the boogered female threads. Thanks! Dave

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Dave Conte

University of Tennessee
Knoxville TN
817-307-5656
Owner: Rocky Top Piano
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Yes, look at the locking set screws first.

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Regards,

Jon Page
mailto:jonpage@comcast.net
http://www.pianocapecod.com
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Original Message:
Sent: 04-29-2022 13:22
From: Edward Foote
Subject: Jansen Artist benches

Greetings,

   I serviced numerous benches at the university, and found that rather than being cross threaded, the older ones would gaul if I tried to remove shoulder bolts without first treating with a penetrating oil.  All of them have the locking set screws which may have, in the past, been left in place when someone tried to tighten them.  

   I have a bundle of the bushings left from my school days, if someone wants discounted sets. (it takes 4 short ones and 4 long ones to do the full job. ) 

Regards, 

Original Message:
Sent: 4/29/2022 10:08:00 AM
From: Dave Conte
Subject: Jansen Artist benches

There are numerous Jansen artist benches (with Steinway knobs) in the music building that are loose. When servicing one, I found all the shoulder bolts are cross-threaded and almost impossible to remove. First, I can't believe this could happen and spoke to Paul Jansen about it who had likewise disbelief as they are hardened tool steel. But the fact remains that they are boogered-up. I fear I am going to run into this again as I continue repairing the rest. The couple I have already done did not have this problem, but it is early in the process of many. Has anyone else encountered this, and if so, how did you manage to get them out? If anyone has had experience with this, how you solved this would be appreciated. FYI - when I did *finally* get them out, I chased the female threads with new shoulder bolts I had spares of, which worked, but they were sacrificed in the process. So I am going to purchase a tap to chase the boogered female threads. Thanks! Dave

------------------------------
Dave Conte

University of Tennessee
Knoxville TN
817-307-5656
Owner: Rocky Top Piano
------------------------------

Original Message:
Sent: 4/29/2022 10:08:00 AM
From: Dave Conte
Subject: Jansen Artist benches

There are numerous Jansen artist benches (with Steinway knobs) in the music building that are loose. When servicing one, I found all the shoulder bolts are cross-threaded and almost impossible to remove. First, I can't believe this could happen and spoke to Paul Jansen about it who had likewise disbelief as they are hardened tool steel. But the fact remains that they are boogered-up. I fear I am going to run into this again as I continue repairing the rest. The couple I have already done did not have this problem, but it is early in the process of many. Has anyone else encountered this, and if so, how did you manage to get them out? If anyone has had experience with this, how you solved this would be appreciated. FYI - when I did *finally* get them out, I chased the female threads with new shoulder bolts I had spares of, which worked, but they were sacrificed in the process. So I am going to purchase a tap to chase the boogered female threads. Thanks! Dave

------------------------------
Dave Conte

University of Tennessee
Knoxville TN
817-307-5656
Owner: Rocky Top Piano
------------------------------