Disassembly of Maxxum AF 28mm Photo Gallery by Pete Ganzel at pbase.com

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Pete Ganzel | profile | all galleries >> Tinkering >> Disassembly of Maxxum AF 28mm

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Disassembly of Maxxum AF 28mm

Improvised tools aid in disassembly and reassembly.
Access to the iris is entirely from the front.
No disassembly of the rear of the lens is necessary for iris cleaning/repair.

28-2.8 r 1	28-2.8 r 3	28-2.8 r 3	28-2.8 r 5	28-2.8 r 7
Friction Tape 2833.jpg	Friction Tool 2828.jpg	Removing Trim Ring 2827.jpg	Trim Ring 2832.jpg	Hood Screws 2829.jpg
Removing Hood 2834.jpg	Removing Front Group 2836.jpg	Marking Iris 2838.jpg	Iris Retainer 2841.jpg	Removing Iris 2845.jpg
Iris Assembly 2850.jpg	Assembled Iris 2855.jpg	Moving Plate 2857.jpg	Iris Tool 2858.jpg	Iris on Tool 2860.jpg
Inserting Iris 2862.jpg	Front Group retainer 864.jpg

comment |

Faith		27-Jan-2015 00:22
Hi, When I reassemble the front element, how much turns it shall take? Will it affect the focusing accuracy? Thank you

Dennis		04-May-2010 03:42
Hi.. does any one know if the lenses are interchangeable with the MD version of the 28mm Minolta lens?

George		08-Aug-2008 17:47
Pete, I did my 2.8 28mm about one year ago and it had once again mucked up with oil on the aperture blades. I fallowed your instructions the first time around with great results.. I think I need to get into the lens a bit more and clean the focus coil threads of grease also.. Can you please give me some pointers on getting into the lens a little more as i don't want to screw it up ... I seem to have a extra sharp copy.. I re cleaned the Iris last night to buy a little more time.. Thanks so much Pete!

Alexander		14-Jun-2008 09:58
Hi Pete, many thx for all this excellent information. Most useful. It allowed me to repair a Minolta 24mm/2.8 which had collected some dust particles inside and had a loose trim cover. The 24mm is quite similar to the 28mm you describe. I never thought I could do this, yet with your great manual I managed to do it! Alexander

Harris Feldman		17-Feb-2007 05:29
Pete, Just a tip for those who try to do this. I found it difficult to get the iris back in even using your homemade iris tool. I found it much much easier to just remove the back plate of the lens, slide the iris back in and then re-attach the back plate of the lens after placing the bar into the spring slot. It worked the fist time I tried that, after failing about 5 times the other way. Harris

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