Nikon 600mm PF 6.3 lens, foot mount (mount base) coming loose
- Thread starter cdfturner
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mathjak107
Active member
interesting they use blue and not purple the weaker version for small screws
that is excellent news because if the lens had to be repaired under warranty and they had trouble getting them out they can blame the blue loctite
that is excellent news because if the lens had to be repaired under warranty and they had trouble getting them out they can blame the blue loctite
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maxxus46
Active member
Awesome thank you!!
maxxus46
Active member
I already own a proper torque bit driver , so I will be setting the torque to 1.59 inch lbs (converted from 18 Nm) and properly set the 4 screws with loctite Blue. If your looking for a small yet handy driver, the wheeler brand is very good quality and reliable. See here: Wheeler Manual Firearms Accurizing Torque Wrench with Inch/Pounds Measurement, Bits and Storage Case for Scope Mounting, Gunsmithing and Maintenance https://a.co/d/2CSrKCP
ajrmd
Well-known member
Where did you obtain this information? The manual suggested that it is a philips screw.
I think the 2mm Phillips screwdriver is close in size to a JIS #0.
ViKan
New member
I got the lens recently and am thinking of doing the same, removing the foot completely and carrying the setup with strap connected to the body . The mount should be able to handle 3lbs hanging off of it , right?
maxxus46
Active member
Yes, the screws are tiny and seem delicate.
Hope they hold stronger than they look
also , I intended to state N-m (Newton meters) in my above conversion. Take care
Hope they hold stronger than they look
also , I intended to state N-m (Newton meters) in my above conversion. Take care 0.18 N-m, but your conversion to in-lbs is correct. These screws are delicate.
Fiat
Active member
How do you connect the strap to the lens body if you remove the foot and the collar (foot mount)? Or do you mean connect to the camera body? I would say no, no for that way. As you carry the combo by the strap, it will swing and I doubt the camera mount can tolerate or endure.
I do have my strap connected to the camera body, though when I am walking I generally hold the camera and lens in my hand. I hang the strap off one shoulder (not around my neck) when I am standing, though sometimes I leave it there while walking but hold the lens with one hand as well for extra support.
mathjak107
Active member
the pitch is different in the JIS screws which are the japanese industry standard heads .
the screw head is a cross slot and not tapered like a philips head .
a philips appears to fit but does not seat all the way down .
so when you torque it you are not deep enough and risk damaging the cross slits
So You're Telling Me that's Not a Phillips?
After all these years of mangling screws on Japanese bikes, people still don't know the difference between Japanese and Phillips screwdrivers.
www.motorcycle.com
Camera and Lens Repair Essentials (Tools)
Just like most bobbies, you’ll require certain tools to repair or maintain the equipment that you use. I love repairing broken photography equipment, it helps save the planet and I save a lot…
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ajrmd
Well-known member
Good stuff. Why then do you think Nikon recommends a Philips screw driver (2mm). Are these even JIS screws as many of these lenses/bodies are manufactured in Thailand or China? Even if Nikon uses JIS screws wh one would think that they would suggest using the proper driver.the pitch is different in the JIS screws which are the japanese industry standard heads .
the screw head is a cross slot and not tapered like a philips head .
a philips appears to fit but does not seat all the way down .
so when you torque it you are not deep enough and risk damaging the cross slits
So You're Telling Me that's Not a Phillips?
After all these years of mangling screws on Japanese bikes, people still don't know the difference between Japanese and Phillips screwdrivers.
Camera and Lens Repair Essentials (Tools)
Just like most bobbies, you’ll require certain tools to repair or maintain the equipment that you use. I love repairing broken photography equipment, it helps save the planet and I save a lot…
mathjak107
Active member
yes these are japanese cross slot heads . if you shine a light in side you can see they are a straight taper , philips has the point tapering to an angle inside.
thats why a philips looks like it fits but it’s not grabbing down in side the head so it puts a lot of force on the top of the screw ..
it isn’t the first time instructions are wrong .
my buddy does jet engine repairs and many times the wrong tools are listed , but in that case they need to get them revised before. proceeding and can’t just use the correct tool, we can
zemlin
Well-known member
I had the same happen on my 70-200. I used Loctite 271. It's stronger than the blue, but still breaks loose easy enough. Regarding the screw heads, I have a WIHA PH0 phillips driver the screws perfectly. I also have a JIS #0 driver. The "draft" angle on the blades is slightly different, but both fit the screws fine for me - I can't feel any difference. I think it comes down to the intersection of the blades and it seems not all Phillips drivers are created equal.
The screws strap lugs on my 400 f/2.8 TC lens were had red thread locker from Nikon. I don't know why they wouldn't do the same for the foot mounts.
The screws strap lugs on my 400 f/2.8 TC lens were had red thread locker from Nikon. I don't know why they wouldn't do the same for the foot mounts.
That's good information all the above. I'm getting a 600 mm 6.3 shortly and I will keep an eye out for loose screws.
I have not even been able to find Loctite 241(blue) closest I can find is 242 (blue) ... 271(red) says it is high strength .. color me confused not a diy type. I have a phillips marked ph000 that seems to fit but is probably not quite right but nothing seemed loose at this time anyway
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Sunny
New member
I had the same issue with the foot on my Z-70-200/2.8. I warned peolple on fredmiranda and asked Nikon to recall them. Oh boy, I got some bad reactions there. I unsubscribed from them.
I had to solve it myself using locktite.
I had to solve it myself using locktite.
Thanks for posting this because my plate on the 600PF was always kind of loose and I thought I had tightened it down. I took the plate off to check the screws, they were fine, but when I put it back on I realized that because the screw was difficult to turn I actually had not tightened it down all the way and I've been shooting with it like that since I got it a few years back. I probably need to order a replacement screw. It's tight now!
mathjak107
Active member
Loctite 241 : Medium strength, low viscosity threadlocking adhesive. Formulated for small metal threads up to M12.
Loctite 242 : Medium strength, medium viscosity thixotropic threadlocking adhesive for metal thread sizes up to M36
i used 242
Completely agree just a drop of blue thread lock is enough and its not difficult to remove the screws if and when required.
242 is perfect.
No clue why the Nikon Service repair manual says 241 but I ordered 242 along with a set of Vessel, a brand recommended by a camera repair guy, bits and handles it was not that much more than just ordering one JIS#0 driver. I did not find a Wheeler or other torque driver with the type of bit set I would want, not sure if I will bother trying to find one.
The Wheeler I could find from this link and others does not go low enough to set toque to 0.18 N-m ? Anyone find one that will go that low?
marc
Well-known member
Agree 100%........fixed the issue with BLUE Loctite.