Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
03-16-2017, 03:25 PM   #1
Loyal Site Supporter
Loyal Site Supporter
BigMackCam's Avatar

Join Date: Mar 2010
Location: North-East of England
Posts: 15,264
MTO-11 helicoid cleaning / re-lubrication?

I recently picked up nice ЗМ-5СА and MTO-11 mirror lenses, both in excellent condition and great optically, but with very, very stiff focusing.

Based on information I found online, I've partially disassembled the ЗМ-5СА (taking the two halves apart), cleaned the threads on both halves and re-lubricated them, and I'm very happy with the result - the focus ring action is smooth and consistent throughout its rotation.

I now want to tackle the MTO-1000, but don't know if it's the same or similar procedure, or if there are any "gotchas" I should be aware of. I can't find any obvious details online, so I'm wondering if anyone here serviced their MTO-1000 focusing, and if so, can you offer any information or advice that would help me to get it right first time?

Many thanks in advance!

Last edited by BigMackCam; 03-17-2017 at 03:11 AM.

  • 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!
information, k-mount, mto-1000 helicoid, pentax lens, slr lens
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
MTO-11CA 1000mm f/10 M42 mount options nater Pentax SLR Lens Discussion 6 09-07-2014 08:37 PM
For Sale - Sold: Two Russian M42 lenses: MC MTO-11CA 10/1000 (mirror), TAIR-3S 4,5/300 (Fotosnaiper) marekd1111 Sold Items 6 08-09-2014 05:27 AM
barrel extension issues on Pentax DA 55-300mm, lubrication issue? Rice Troubleshooting and Beginner Help 1 05-09-2014 12:26 PM
For Sale - Sold: [Worldwide] Fine Russian MTO Mirror Lens 500mm f8 rrodgers Sold Items 2 02-27-2010 01:33 PM
MTO 1000mm initial results Raybo Pentax SLR Lens Discussion 18 05-10-2008 04:58 PM

All times are GMT -7. The time now is 04:03 PM. | See also:, 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?
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]