In this video I will show how to work with Mamiya-Sekor C 1:2.8 f=80mm if it has sticky aperture blades or if there's a stiff focus ring. I will fully disassemble the aperture assembly and the focus assembly, then cleaning the parts and then in the PART 2 that will come sooner, I will show how to assemble the lens again.


REMEMBER TO set small marks BEFORE disassemble the aperture assembly and the focus helicoids!



Here are some link's to different repair tool's and lubricating stuff:




"ORBIT" HEPA Blower:

[ Ссылка ]

You can buy it here:
[ Ссылка ]




"Liqui-Moly" LM 50 Litho HT:

[ Ссылка ]



"Liqui-Moly" LM47 MoS2 grease with Molybdenum disulfide:

[ Ссылка ]



or on Amazon:

[ Ссылка ]




Contact glue:

[ Ссылка ]



SpyderLENSCAL:

[ Ссылка ]



Japan Hobby Tool rubber cone:

[ Ссылка ]



18 different size rubber repair tool's:

[ Ссылка ]



Divider Caliper Wing Compass:


[ Ссылка ]





You can also buy this set.

Lens Repair Set with pointed, flat, half flat tips:


[ Ссылка ]




JIS cross head screw driver's:


[ Ссылка ]


Or this set, that is the set I use:


[ Ссылка ]




Lens cleaning wipes (PEC-PAD):


[ Ссылка ]



Thin Cotton Buds x 200 you can buy them here:

[ Ссылка ]



DSLRKIT Pro Lens Vise Tool Repair Filter Ring Ajustment Steel 27mm to 130mm:


[ Ссылка ]



Japan Hobby Tool Herical Grease Made in Japan:

[ Ссылка ]




Loctite 222 50ml Threadlocker

[ Ссылка ]


And you will also need some Isopropylalcohol 99%

And sometimes Lighter Fluid that is very good to clean lens element's.

NOTE: Do NOT! use Acetone on platic part's, it will damage / melting the plastic!!!

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