Mamiya RB67 Film will not advance

I recently bought an RB67 Pro S with a Pro S back. Winding the film on the first night out seemed a bit intermitant and I took 4 images.

Second day 3 more shots with no problem then a struggle to get it to wind on befor taking another so the counter is at 8 with the red mark and it will not do anything more.

Trying to wind on when the lever gets to the 70* position it gives a slight click but that is all.

With the back removed and the blanking plate in it's just the same, even using the small forward to end of film lever moved to the left, nothing. Just the slight click.

Can anyone help?

it sounds like there may be a problem in the counter mecanism. most times a CLA will resolve this problem.

its more than likely a wafer gear that gets gummed up. a thin brass gear with notches that meters the frames isnt working properly. the wafer is spring loaded. the top part of the wafer goes out of alignment with the lower part of the wafer when its waiting for the film to advance. as you advance, the film passes over a roller the realigns the slots of the wafer so the signal arms tab drops into the slot and stops you from advancing any further. if that top and bottom of the wafer arent running free, it will either not stop on the frame or not advance properly.

that click is a normal sound. thats the signal arm engaging with the wind mechanism, its actually resetting itself when it clicks.

are you sure the back isnt in multi exposure mode? check under the advance lever if its on the red dot or not?

it's an easy fix, but that depends on how handy or brave you are.

if you have a return policy with who you bought it from, try returning it.

it sounds like there may be a problem in the counter mecanism. most times a CLA will resolve this problem.

 

its more than likely a wafer gear that gets gummed up. a thin brass gear with notches that meters the frames isnt working properly. the wafer is spring loaded. the top part of the wafer goes out of alignment with the lower part of the wafer when its waiting for the film to advance. as you advance, the film passes over a roller the realigns the slots of the wafer so the signal arms tab drops into the slot and stops you from advancing any further. if that top and bottom of the wafer arent running free, it will either not stop on the frame or not advance properly.

 

that click is a normal sound. thats the signal arm engaging with the wind mechanism, its actually resetting itself when it clicks.

 

are you sure the back isnt in multi exposure mode? check under the advance lever if its on the red dot or not?

 

it's an easy fix, but that depends on how handy or brave you are.

 

if you have a return policy with who you bought it from, try returning it.

Thanks for that information, it's not in multi exposure.

Afraid it was a private sale though they are sending a replacement back so fingers crossed it works.

If the replacement does work I'll have a look at the gears you mention.

Thanks again.

thats nice of them.

pm me if you need help?

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thats nice of them.

 

pm me if you need help?

 

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Do you know of a good place to have an RB67 CLA'd?