Got an old Rong-Fu RF-20 mill that the vertical handwheel does not work on.

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Hey, all!

I inherited a Rong-Fu mill from my grandfather, and the quill works, but the Z hand wheel just spins and doesn't do anything.

"Go find a manual," you might say! And I totally did! I scrolled down to Page 8 where it says how to engage the vertical adjustment. But here's the thing - the English is just broken enough to where I can't seem to figure out exactly what they're telling me to do.

Can someone translate, please? I'm sure it's something super simple, but I can't wrap my empty head around it!

Thanks in advance!
 
Turn knob labeled knob in drawing clockwise until it stops. Brute force is not necessary. Less than hand tight is sufficient.
 

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I just checked, and my RF-20 doesn’t have that knob.
I have seen a write-up (or video) of an RF-20/25 rebuild where the fine-control knob didn’t work, and when disassembled, the gearing was broken. You might want to pull it apart and look inside.
 
jwmay said:
Turn knob labeled knob in drawing clockwise until it stops. Brute force is not necessary. Less than hand tight is sufficient.
Click to expand...
Unfortunately, that knob just doesn't appear to exist on my mill. I'll post a picture later tonight to show what I mean.
 
3Dogs said:
I just checked, and my RF-20 doesn’t have that knob.
I have seen a write-up (or video) of an RF-20/25 rebuild where the fine-control knob didn’t work, and when disassembled, the gearing was broken. You might want to pull it apart and look inside.
Click to expand...
Any chance you might have a link to that? If I need to go in, I'd like to be as prepared as possible first!
 
This is not what I saw, but it might help:
www.hobby-machinist.com

Rutland RF-30 Fine Feed Travel Issues

Hello, My name is Roger and I am very new to machining. I enjoy welding and restoring/repairing cars. I have worked for the engineering department of an oil refinery for the last 30 years. I was given a Rutland RF-30 as a gift, and it is fairly well taken care of. The previous owner...
www.hobby-machinist.com www.hobby-machinist.com
It’s referring to an RF-30, but the machines are very similar.
 
This might be the video.
He has a number of videos showing a pretty complete tear-down of the machine:

 
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