Mir-1b 37mm f2.8 88073378 disassembling, cleaning, relubricating

A service video of the vintage soviet lens Mir-1b 37mm SN: 88073378

Prior condition of the lens:
Stiff focusing ring
Dirty lens elements
Oily aperture blades

A summary of work done for this lens:
Completely strip off of old soviet grease in the entire lens
Relubricated focusing helicoid with Polar Bear Camer NLGI #00 grease
Relubricated aperture ring mechanism with Polar Bear Camera NLGI #3 grease
All lens elements wiped down with IPA99%
Replaced all old screws with new 303 stainless steel and threadlocked with Loctite 222

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00:00:00 initial inspection
00:01:29 separating focusing block
00:06:52 disassembling focusing helicoid
00:20:44 cleaning focusing helicoid
00:52:56 relubricating focusing helicoid
01:27:29 removing rear element group
01:39:43 removing front element group
01:48:50 removing aperture ring
02:21:47 cleaning lens block
02:50:30 cleaning aperture ring
03:30:28 relubricating aperture ring
04:37:46 cleaning rear elements
05:10:30 cleaning front elements
05:57:58 reassembling focusing block
06:12:04 threadlocking screws
06:30:36 reassembling focusing block
06:40:06 final inspection

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