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Another Lesson Learned #704545
Tue Feb 13 2018 09:37 PM
Tue Feb 13 2018 09:37 PM
Joined: Jun 2013
Posts: 540
Dallas, tx
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model72 Offline OP
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model72  Offline OP
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Dallas, tx
I was removing the 8 bolts that hold a Tokheim 850 visigauge together and making good progress. When I started on number 8, the entire bottom of the outside glass cylinder cracked all the way around and two pieces shot out across my work bench. About 3 minutes later, two shards of glass popped straight up from the bottom ring that was still anchored in the white sealant. I have heard of this happening to a visible cylinder and now I know that it can happen to a visigauge cylinder as well. The mistake was far less costly than doing the same thing on a visible cylinder.
Joe

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Re: Another Lesson Learned [Re: model72] #704546
Tue Feb 13 2018 09:54 PM
Tue Feb 13 2018 09:54 PM
Joined: May 2012
Posts: 3,616
Hays, Kansas
bsplichal95 Offline
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bsplichal95  Offline
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Hays, Kansas
Oh no!!!


Braden Splichal

Re: Another Lesson Learned [Re: model72] #704562
Wed Feb 14 2018 05:35 AM
Wed Feb 14 2018 05:35 AM
Joined: Dec 2010
Posts: 1,009
Missouri,USA
Rabbitman Offline
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Rabbitman  Offline
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Missouri,USA
I'm not sure I would call it a mistake Joe. I don't mess with visibles much but from what I have been told there is not really any safe way to take any of the old glass parts apart without the risk of them shattering unexpectedly. I worked for three weeks trying to remove sight glasses from my Erie 70 top, finally breaking both to get them out. It seems that the combination of the years of being under pressure in a fixed position, changes in temperature, and the forces of removing what holds the glass just ends up causing the old glass to give up the ghost. I just hate being beat by something like that though!....GB

Re: Another Lesson Learned [Re: model72] #704569
Wed Feb 14 2018 07:22 AM
Wed Feb 14 2018 07:22 AM
Joined: Dec 2006
Posts: 1,029
northwestern Pa.
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Savinsam Offline
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Savinsam  Offline
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Joined: Dec 2006
Posts: 1,029
northwestern Pa.
Been there, done that! But there is reproduction visi glass available.

Re: Another Lesson Learned [Re: Savinsam] #704573
Wed Feb 14 2018 07:37 AM
Wed Feb 14 2018 07:37 AM
Joined: Jun 2013
Posts: 540
Dallas, tx
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model72 Offline OP
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model72  Offline OP
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Joined: Jun 2013
Posts: 540
Dallas, tx
Already placed an order with Ron Scobie.

Re: Another Lesson Learned [Re: model72] #704616
Wed Feb 14 2018 05:50 PM
Wed Feb 14 2018 05:50 PM
Joined: Aug 2014
Posts: 356
augusta county, va
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pkhammer Offline
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augusta county, va
It may seem obvious and maybe you did this but the bolts for a cylinder or any similar bolt pattern need to be loosened/tightened together a little at a time following a cross pattern that keeps pressure equal all the way around just like tightening a wheel or cylinder head. There's no guarantee that'll always work especially dealing with glass but if you just loosen and take one out at a time breakage is almost a guarantee.

Re: Another Lesson Learned [Re: model72] #704625
Wed Feb 14 2018 08:46 PM
Wed Feb 14 2018 08:46 PM
Joined: Oct 2017
Posts: 87
Hamilton Ohio
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Corey1955 Offline
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Corey1955  Offline
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Joined: Oct 2017
Posts: 87
Hamilton Ohio
That’s one of those, “come on are ya freaking kidding me explitive” moments. Also a good reason to wear safety glasses when working on projects.

Re: Another Lesson Learned [Re: model72] #704634
Thu Feb 15 2018 07:39 AM
Thu Feb 15 2018 07:39 AM
Joined: Jun 2013
Posts: 540
Dallas, tx
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model72 Offline OP
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model72  Offline OP
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Joined: Jun 2013
Posts: 540
Dallas, tx
The safety glasses were on.


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