AW-1, MD-2, MD-3 and MD-100
nylon gear replacement services

Most of the nylon gears in the AW-1, MD-2 & MD-100 rewind and MD-3 wind are split due to old age, see below, and original Nikon parts are now very scarce. I am now down to my last four new Nikon MD-3 gears, and previously I limited the re-gearing service to a few customers with mint MDs. However, I have commissioned a specialised gear company to manufacture the AW-1, MD-2 & MD-100 and MD-3 gears in brass for me. These brass gears are superior to the original nylon ones, as they are much stronger and will never split. Hence I can give a life time warranty on the replacement brass gear against any defects. Also, the re-geared MDs are actually quieter than when they were new, because of better gear couplings.

The re-gearing prices are :

MD-2, MD-100  |   MD-2, MD-100
rewind               |   wind and
gear only           |   rewind gears
GBP   90           |     GBP 130
EUR 100           |     EUR  145
USD 125           |     USD  180

GBP   80  
EUR   90 
USD   110 

GBP   65  
EUR   75 
USD   90 

The re-gearing services also include re-greasing of internal gears.

I can also sell you just the gears if you want to fit them yourself.

AW-1 wind, MD-2, MD-100 rewind or MD-3 wind gear = $25

MD-2, MD-100 wind gear = $30

MD-3 regearing instructions = $15
(11 pages with step-by-step instructions and 15 photos)

MD-2, MD-100 regearing instructions  = $20
(19 pages with step-by-step instructions and 34 photos)

Airmail is $7 for the gears and instructions.

MD type          Motor gear    Coupling gear    Remaining gears to the F2 body
MD-1                   metal            nylon                metal

MD-2 <44xxxx     metal            nylon                metal

MD-2 >44xxxx     nylon            metal                metal

MD-3                   nylon            metal                metal

AW-1                   nylon            metal                metal

MD-100                nylon            metal                metal

Regeared MDs     metal            metal                metal
Split nylon gear on the MD-2 and MD-3 motor.
Very common, and almost 100% for MD-3s.
I have lots of brass replacement gears in stock
MD-100 and MD-2, serial number higher than 44xxxx, have nylon motor gear and metal coupling gear MD-1 and MD-2, with serial number lower than 44xxxx, have metal motor gear and nylon coupling gear
Regeared MD-2 with metal motor gear and metal coupling gear. This version is the strongest