Pentax 67 chain repair

norris47 · 05-20-2020, 06:58 AM

Hello dear people,
I am currently in trouble, trying to repair a pentax 67 aperture chain, as I realised that the screws holding the camera's front lens mount plate in place have seized. I tried adding a drop of wd40 and only 1 screw came loose. Do you have any suggestions for me?

Thank you

**gofour3** · 05-20-2020, 07:18 AM

Welcome to the forum!

Eric can do the work, here is his website:

Pentax Repairs

Phil.

Not a Number · 05-20-2020, 02:57 PM

If you haven't stripped the screw try a penetrating oil like PB B'laster. WD-40 is not a penetrating oil although they make one. Penetrating oils have compounds in them to dissolve corrosion and travel into the threads.

You need to check with Eric as I recall he only works on some of the Medium Format cameras. I think he only works on the 6x7s and not the 67s. I could be wrong.

amstel78 · 05-20-2020, 04:50 PM

Kroil works wonders for seized screws.

05-20-2020, 06:58 AM	#1
norris47 New Member Join Date: May 2020 Posts: 2	Pentax 67 chain repair Hello dear people, I am currently in trouble, trying to repair a pentax 67 aperture chain, as I realised that the screws holding the camera's front lens mount plate in place have seized. I tried adding a drop of wd40 and only 1 screw came loose. Do you have any suggestions for me? Thank you

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05-20-2020, 07:18 AM	#2
gofour3 Site Supporter Join Date: Oct 2008 Location: Vancouver, Canada Posts: 8,093	Welcome to the forum! Eric can do the work, here is his website: Pentax Repairs Phil.

05-20-2020, 02:57 PM	#3
Not a Number Moderator Join Date: Mar 2012 Location: Venice, CA Posts: 10,526	If you haven't stripped the screw try a penetrating oil like PB B'laster. WD-40 is not a penetrating oil although they make one. Penetrating oils have compounds in them to dissolve corrosion and travel into the threads. You need to check with Eric as I recall he only works on some of the Medium Format cameras. I think he only works on the 6x7s and not the 67s. I could be wrong.

05-20-2020, 04:50 PM	#4
amstel78 Senior Member Join Date: Aug 2018 Location: NEPA, NYC, and wherever work sends me... Photos: Albums Posts: 247	Kroil works wonders for seized screws.