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Instrument pod delamination v7-850

D

DK90

Tuned and Synch'ed
GT Famiglia
Joined
Feb 22, 2022
Messages
37
Location
Costa Mesa, CA
I've searched here with no luck.

Has anyone experienced delamination of whatever the plexi/polycarbonate is coated with on their instuments? I circled the problem area as it just rained here and the other spots are just from water.

My tach is starting to bubble and flake off in a few spots. I'm very diligent about cleaning and I never leave foreign debris on there for long. I have no idea what could have caused it. From the look of the parts catalog, the glass isn't separate from the gauge itself, so I doubt it alone can be replaced. The bike is over two years old and has 19k miles, so its not exactly new.

Maybe there is something out there than can prevent this from happening further?

Cheers

IMG 1140
 
Search condensation here. It's a plastic lens, not glass unfortunately. Not much you can do to prevent it.
 
Vagrant said:
If that's your biggest problem with a Guzzi you need to buy a bottle of very good booze and celebrate!
Click to expand...
It's been incredibly reliable. I commute on it daily and have never had any warranty work done, and nothing more than scheduled maintenance from the day it rolled out of the showroom. So, yes I guess this my only 'problem' lol. I'll probably just let it take its course before I shell out $750 for a new tach. Perhaps it comes apart and I can remove the coating and just polish it up.
 
Mayakovski said:
I wonder if you can open it up and replace it with a piece of glass?
Click to expand...
That would be something. I would assume it comes apart, rather than it needing to be completely replaced if something ever goes wrong with it. However, there are no individual part numbers for its components. I’m going to wait until it gets bad enough that I have nothing to lose and see if I can take it apart.
 
andyalp said:
Can be done if it is of similar to the V7III construction.
I did it to fix a speedo & tacho needle errors but did not change the glass - I've had no condensation issues. Usual caveat - do at your own risk.
Have a look at: https://www.guzzitech.com/forums/threads/false-speedo-readings.23518/post-198067
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It is the same part number, so I suppose it is the same. Thank you for the reference, this is great news. I will have to open it up and try to clean the plastic of this flaky coating. Who knows maybe a piece of actual glass can be fitted. I will post the results.
 
Here’s an idea.

If you don’t relish gouging into your bezel like that, consider contacting this gentleman. He is a great guy and does excellent work.

www.guzzitech.com

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Hey Everybody, My recent purchase last year, a 2009 California Vintage, had the dreaded bad speedometer problem. The factory unit is NLA (No longer available) and many people said that the unit could not be repaired. NOT TRUE! This gentleman repairs all sorts of instrumentation and...
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Thanks, Scott. I'll check that out.

Update. Here's how it looks now. I think I may just wait until the coating completely flakes off, then just clean it up with plastic polish. It's not really 'broken' so I guess it's best not to dig into it.

IMG 1153
 
DK90 said:
Update. Here's how it looks now.
Click to expand...
Disgraceful Piaggio.
Speedo is OK? I have the capabilities to adjust miles (only upwards) to any E4/5 V7/9 models for those who get their speedo replaced.
 
GTM® said:
Disgraceful Piaggio.
Speedo is OK? I have the capabilities to adjust miles (only upwards) to any E4/5 V7/9 models for those who get their speedo replaced.
Click to expand...
Speedo is fine. My assumption is that this is a defect rather than environmental since they're both exposed to the same conditions. I came out to my bike after work last night and the condensation had formed under the coating and really seemed to accelerate the issue. It went from two spots to nearly the whole thing in minutes. Its hard to read in the daylight so I'm hoping I can get it all off soon.
 
DK90 said:
Thanks, Scott. I'll check that out.

Update. Here's how it looks now. I think I may just wait until the coating completely flakes off, then just clean it up with plastic polish. It's not really 'broken' so I guess it's best not to dig into it.

View attachment 34343
Click to expand...
I had the exact same thing happen (only on the tach) this past summer after riding through an absolute deluge. I took a clean cloth and warm soapy water and washed it for about 10 minutes until all of the gunk came off. It has been fine ever since. I suspect it is some kind of coating on the plastic that just fails over time.
 
Mayakovski said:
I had the exact same thing happen (only on the tach) this past summer after riding through an absolute deluge. I took a clean cloth and warm soapy water and washed it for about 10 minutes until all of the gunk came off. It has been fine ever since. I suspect it is some kind of coating on the plastic that just fails over time.
Click to expand...
Interesting, it has been quite wet here lately. I will see if a good wash will help remove it. Thanks, for the tip. Yes, it does seem to be some kind of scratch resistant hard-coating.
 
So the coating is on the external side then and not the internal side?

If this is the case, I would just get a good plastic polish and polish the remaining coating off. It will certainly look better and be readable that way.

Then just keep a coat of carnuba wax on it and you should be good to go.
 
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