Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
3 Likes  
K-5IIs Lens Mount Repair
Posted By: DaveR, 10-17-2015, 10:20 PM

I donít post much as Iím time poor and slow on a keyboard, but I have numerous times been much helped by the posts and information given by others, so an opportunity to give backÖ

A few months ago while on a job covering school age gymnastics, while I was using my 2nd body, a K-5 with a wide lens, my main body (a K-5IIs) with Sigma 70-200mm 2.8 attached, rolled off a trampoline and landed on concrete. I didnít see it but heard the crash. The lens parted company with the body pulling the mount off the body. I cried, literally.

(see photo 1)


The lens was ok, but it had pulled the metal body mount ring off the body. The 5 mounting points on the body had screw threads pulled out and some had pieces broken off or out of them, meaning that it wasnít just a case of screwing it back on. Also the metal mount ring and contact spring were also bent. (+ a spring locating pin/spigot was broken off).

(see photos 2,3 & 4)


I sent it to the distributors in Australia (CR Kennedy) for a repair quote and was informed it was not economical to repair, needing a replacement mirror box assembly (the Ďcoreí of the camera). This means a full day for a technician replacing and then adjusting and calibrating numerous components to obtain correct alignment. I obtained a Pentax service manual and had some idea of the magnitude of the work involved.

Funds for a K-3II were donated by my generous (& gorgeous) partner and said body obtained. It seemed a shame and a waste of a good body though so I made enquiries about repairing the K-5IIs.

Some of the info I discovered:
∑ The mirror box seems to be basically the same for all models from K10 through to K3.
∑ The material is a carbon fibre re-inforced plastic that doesnít like super glues.
∑ Alignment is critical to achieve proper focus side to side and top to bottom.
∑ I didnít like the idea of just gluing the screws back in so I checked the depth of the screw holes and sought longer screws
∑ The flash head of a Pentax AF-360FGZ Flash has 2 screws the same diameter (2mm) as the mount ring, but longer Ė 20mm vs 4.5mm. But the heads are larger and thicker.

(see photos 5,6,7,8 & 9)

------------------
Continued in Part 2

Attached Images
                 


Last edited by DaveR; 10-17-2015 at 10:29 PM. Reason: Photos didn't appear
Views: 5,986
10-19-2015, 11:55 AM   #16
Site Supporter




Join Date: Jan 2011
Photos: Albums
Posts: 2,237
that's impressive. great job

10-21-2015, 11:15 AM   #17
Site Supporter
Shanti's Avatar

Join Date: Jul 2012
Location: Western Denmark
Photos: Gallery | Albums
Posts: 896
Thanks for the info,just bent my lens mount,but not as bad,so hope the screw holes are ok
where did you get the replacement ring? will Pentax sell to you
07-03-2016, 05:02 AM   #18
New Member




Join Date: Jun 2016
Posts: 5
I came on this site looking for help mending a sick K-x, saw from your excellent pictures the mount spring should have a black wire soldered to it. Mine was missing. I made a temporary repair with copper tape which worked as shown in my pictures.Your article will be a great help when I make a permanent repair. Many thanks.
10-19-2016, 01:22 AM   #19
New Member




Join Date: Jun 2016
Posts: 5
Regarding the K-x, I re-soldered the mount spring and the camera now works fine. I had to remove the front of the camera to retrieve the black wire and your pictures proved invaluable. Thanks again

10-19-2016, 02:42 AM   #20
New Member




Join Date: Feb 2008
Location: URALLA NSW
Posts: 22
Original Poster
No worries Webby.

I have benefitted from info that others have posted on this and other forums, so it is good to be able to help others.

Dave.
10-19-2016, 06:13 AM   #21
Site Supporter




Join Date: Nov 2012
Location: North Wales
Photos: Gallery | Albums
Posts: 1,386
If anyone needs spare parts for a job like this I have a disassembled K-r - all major components. This resulted from my acquiring cheaply a K-r with a cracked mirror with the thought "how difficult is that to replace?". Well it's full disassembly actually to do the job properly, though I did wonder if it could be done adequately without disassembly, there's just a couple of plastic latches that would have to be overcome to remove the mirror and then the replacement would have to be secured somehow. Anyway I suddenly saw another K-r sold for parts - a botched diy reassembly. Got that, Luton camera repairs did the mirror box swap and also casing replace on my then main camera, another K-r, I sold the repaired k-r at a slight loss, and I still have all the pieces.
I'm UK btw.
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!
body, bottom, camera, cover, drill, dslr, fix for body, front, glue, head, hole, holes, idea, k-5iis, k-5iis lens, k10 d, k20 d, k3, k5, k7, lens, mount, oil, pentax, photo, photography, photos, pin, repair, screw, screws, socket
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Stolen K-5iis w/ 35mm lens mackwon Pentax DSLR Discussion 6 10-02-2015 10:47 PM
Stolen: K-5IIs with 18-135 WR lens 12345 Pentax DSLR Discussion 14 09-02-2015 02:36 PM
Use of Pentax Series M Lens with K-5IIs & K-3 in manual mode nhlblues Troubleshooting and Beginner Help 4 01-17-2015 01:13 PM
Tokina SD 28-70mm 3.5-4.5 K mount on K-5IIS moomin Pentax SLR Lens Discussion 5 02-03-2013 04:10 PM



All times are GMT -7. The time now is 02:14 PM. | See also: NikonForums.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