MZ5n mirror blocked, service manual?

Not a Number · 01-21-2019, 02:49 AM - **1 Like**

Originally posted by Jean Poitiers

Resurrection of an old thread ... but still a useful one.

I have just opened the bottom of a MZ-5n that I recently acquired to get an idea of the task involved. I have figured out where the motor is, etc. ... and it's a shame that it's so deep in the body. I removed the right-side of the front in order to access a screw which held the gear plate. I can move the mirror manually by hand spinning the gears next the the motor.

I hesitate a bit here ... has anyone recently done still successfully and are the brass gear motors still available? Cheers, J

See post #52

Originally posted by 45 Mike

I just ordered the gears, that are still available from HERE:

Mikroantriebe KK Produkcja Zahnrad, Schnecken und Car System Onlineshop - Zahnrad / Trieb M0.25 / 13 Zähne

If you order you must change the drill/hole diameter to 1.5 mm
Change the width to 2.0 mm
and the material to brass

with shipping, for three of these gears, the cost was $20.93 USD

On the 4th page of this thread is the procedure that works for replacing just the gear, without the complete removal of the motor.

I will report back if/when I manage the repair on my ZX-M and ZX-5

Eric would not repair my ZX-M as he cannot get the correct pentax parts. I wonder if he might be willing to order these gears and just replace the gears.

**Jean Poitiers** · 01-21-2019, 03:38 AM

Originally posted by Not a Number

See post #52

Thanks !

I will check this out.

**ChrisPlatt** · 01-21-2019, 06:49 PM - **1 Like**

Holy cow, look at all those plastic gears!

Chris

Not a Number · 01-21-2019, 10:36 PM - **1 Like**

I suggest you get a pinion gear puller if you can find one that handles a 1.5mm shaft and can get close enough to the motor without removing it.

Premium Steel Universal Motor Pinion Gear Puller Remover for RC Motors Accessory | eBay

Shaft sizes are not listed for the above. I suggest contacting the seller. Otherwise it might do the trick.

redbirdpete · 03-18-2019, 12:35 PM

Originally posted by Not a Number

I suggest you get a pinion gear puller if you can find one that handles a 1.5mm shaft and can get close enough to the motor without removing it.

Premium Steel Universal Motor Pinion Gear Puller Remover for RC Motors Accessory | eBay

Shaft sizes are not listed for the above. I suggest contacting the seller. Otherwise it might do the trick.

I don't want to brutal, but unless you are very good at taking small complex things apart and putting them back together I would go find a different camera. If you are determined I have three of the Polish gears I can send you for just the postage. These cameras particularly hate sitting unused, so a mint one that has been sitting in a drawer for 20 years will get through anything between a couple of frames and half-a- dozen films because it packs up.

I've got a drawer full of the flippin' things.

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01-21-2019, 02:49 AM - 1 Like	#106
Not a Number Pentaxian Join Date: Mar 2012 Location: Venice, CA Posts: 5,811	Originally posted by Jean Poitiers Resurrection of an old thread ... but still a useful one. I have just opened the bottom of a MZ-5n that I recently acquired to get an idea of the task involved. I have figured out where the motor is, etc. ... and it's a shame that it's so deep in the body. I removed the right-side of the front in order to access a screw which held the gear plate. I can move the mirror manually by hand spinning the gears next the the motor. I hesitate a bit here ... has anyone recently done still successfully and are the brass gear motors still available? Cheers, J See post #52 Originally posted by 45 Mike I just ordered the gears, that are still available from HERE: Mikroantriebe KK Produkcja Zahnrad, Schnecken und Car System Onlineshop - Zahnrad / Trieb M0.25 / 13 Zähne If you order you must change the drill/hole diameter to 1.5 mm Change the width to 2.0 mm and the material to brass with shipping, for three of these gears, the cost was $20.93 USD On the 4th page of this thread is the procedure that works for replacing just the gear, without the complete removal of the motor. I will report back if/when I manage the repair on my ZX-M and ZX-5 Eric would not repair my ZX-M as he cannot get the correct pentax parts. I wonder if he might be willing to order these gears and just replace the gears.

01-21-2019, 03:38 AM	#107
Jean Poitiers Site Supporter Join Date: Apr 2011 Location: Lost in translation ... Photos: Gallery \| Albums Posts: 17,410	Originally posted by Not a Number See post #52 Thanks ! I will check this out.

01-21-2019, 06:49 PM - 1 Like	#108
ChrisPlatt Site Supporter Join Date: Nov 2007 Location: Rockaway Beach NYC Posts: 5,711	Holy cow, look at all those plastic gears! Chris

01-21-2019, 10:36 PM - 1 Like	#109
Not a Number Pentaxian Join Date: Mar 2012 Location: Venice, CA Posts: 5,811	I suggest you get a pinion gear puller if you can find one that handles a 1.5mm shaft and can get close enough to the motor without removing it. Premium Steel Universal Motor Pinion Gear Puller Remover for RC Motors Accessory \| eBay Shaft sizes are not listed for the above. I suggest contacting the seller. Otherwise it might do the trick.

03-18-2019, 12:35 PM	#110
redbirdpete Forum Member Join Date: Nov 2007 Location: Gwynedd, Wales Posts: 53	Originally posted by Not a Number I suggest you get a pinion gear puller if you can find one that handles a 1.5mm shaft and can get close enough to the motor without removing it. Premium Steel Universal Motor Pinion Gear Puller Remover for RC Motors Accessory \| eBay Shaft sizes are not listed for the above. I suggest contacting the seller. Otherwise it might do the trick. I don't want to brutal, but unless you are very good at taking small complex things apart and putting them back together I would go find a different camera. If you are determined I have three of the Polish gears I can send you for just the postage. These cameras particularly hate sitting unused, so a mint one that has been sitting in a drawer for 20 years will get through anything between a couple of frames and half-a- dozen films because it packs up. I've got a drawer full of the flippin' things.