Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
07-03-2022, 09:34 PM   #1
New Member




Join Date: Jul 2022
Posts: 5
Pentax MZ series mirror shaft bond question

Hi Folks,
I recently acquired a brace of MZ-50s (and one MZ-7), which of course have the dreaded broken plastic gear problem. Now, I normally repair old kodaks and contaflexes so these MZs present a bit of challenge. I'm going through the official service manual and the guide I found at ipernity: Pentax zx/mz mirror motor repair by 5cent trying to come up with a work plan that will maximize my success.


My problem is this: I figure that if I've gone to all the trouble to pull these things apart to replace the mirror motor gear, then I may as well give the pentaprism, fresnel lense and main mirror a good clean while I'm there. The service manual gets real vague when it comes to explaining how to remove the main mirror - apparently the shaft that holds it in is "bonded" to the mirror flap to stop the shaft from coming out. Does anyone know what sort of bond or adhesive was used to do this? or what solvent might work?

If I can remove the mirror shaft then I can extract the mirror flap(s) and put them in my ultrasonic cleaner. Otherwise I'll have to somehow put the entire Front Housing Assembly (part #A101) in the cleaner - which might be the best thing to do anyway but it means I'll have to strip all of the gears and electronics from it first.


There are enough dead MZ cameras out there with the exact same problem that I reckon it's learning to fix them, because when they work they are a pretty capable little camera.

Hope you can help

Thanks

07-04-2022, 02:49 AM   #2
Senior Member




Join Date: Aug 2016
Location: Leura NSW
Posts: 251
Don't forget the flash pinion which also breaks and stops the spring from holding the flash up. Then there is the problem of the film winding gear that can also fail.
While I do like the MZ series, particularly the 3, 5, 5n, 6 and 7,
It seems that the plastic used for important bits was not designed to last. I don't know if you are intending to offer a repair service but I doubt that the MZ 30,50 and 60 would fetch a price to make it viable. However I am more than willing to be proved wrong 😊
07-04-2022, 03:00 PM   #3
New Member




Join Date: Jul 2022
Posts: 5
Original Poster
QuoteOriginally posted by Joetitch Quote
Don't forget the flash pinion which also breaks and stops the spring from holding the flash up. Then there is the problem of the film winding gear that can also fail.
While I do like the MZ series, particularly the 3, 5, 5n, 6 and 7,
It seems that the plastic used for important bits was not designed to last. I don't know if you are intending to offer a repair service but I doubt that the MZ 30,50 and 60 would fetch a price to make it viable. However I am more than willing to be proved wrong 😊
Thanks for that - I was aware of the flash pinion problem (one of my MZ-50s has it). I hadn't heard of the film winding gear issue. I don't really know what my plans are regarding offering a repair service, I simply enjoy repairing cameras and noticed that the MZ-50s in particular were abundant, broken and cheap. And, when they work, they're great little SLRs - so I thought to myself, if I can come up with a fix then there might be an opportunity to make a bit of pocket money - possibly enough to support my camera addiction ;-)

The problems the MZ series have seem to be mechanical in nature - they don't seem to die electronically - so in theory fixing them should be within my skill range.

I should imagine that the same Polish company that makes the mirror gear can make the film winding gear. I'll look into the flash pinion...

At this stage I'm trying to figure out a step by step procedure to get to where I need to, make the repair, clean the optics and then successfully re-assemble. I have 4 MZ-50s and a MZ-7 to practice on and if I can come up with a fool proof procedure then I can probably get the repair time down to hours rather than days.


In terms of dollar value, I know that no-ones going to pay me more $100 to fix a camera that's only worth $150, but if I can pick dead ones up for $30 or so, then it might be worth spending a couple of hours repairing them and selling them on. But first I need to develop a repair method that gives me a camera I am confident will keep working for another three or four years (at least)
Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
bond, mirror, mirror shaft bond, motor, mz, mz series mirror, pentax mz mirror, pentax mz series, pentax service, repair, series mirror shaft, service, shaft, warranty
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Pets Leo finds a shaft of light ifly65 Post Your Photos! 3 04-19-2020 04:37 PM
LX Film Rrewind Shaft Replacement? LXuser Film SLRs and Compact Film Cameras 4 12-14-2014 01:16 PM
Rewind shaft mation Film SLRs and Compact Film Cameras 7 05-22-2012 01:11 PM
Wanted - Acquired: any of Pentax MZ-S, Z-1P, Z-1,MZ-3, MZ-5N, MZ-5, MZ-6 tianyawoya Sold Items 1 07-10-2010 08:13 AM
Word Up: Rewind Shaft Binding Mister Pita Film SLRs and Compact Film Cameras 2 04-17-2010 07:18 AM



All times are GMT -7. The time now is 07:58 AM. | See also: NikonForums.com, CanonForums.com part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top