topic Re: 70 200 usm is L falling to bits in EF & RF Lenses

70 200 usm is L falling to bits

jetgriff — Thu, 02 Nov 2017 08:13:00 GMT

the little screws under the Tripod ring on the barrel of lens keep coming loose and the lens wobbles about..

Can I use LockTight to secure them?????

Re: 70 200 usm is L falling to bits

Waddizzle — Thu, 02 Nov 2017 10:28:59 GMT

@jetgriff wrote:
the little screws under the Tripod ring on the barrel of lens keep coming loose and the lens wobbles about..
Can I use LockTight to secure them?????

That’s an odd problem. I do not think that stuff would work. They might be stripping. Let Canon fix it.

Re: 70 200 usm is L falling to bits

jrhoffman75 — Thu, 02 Nov 2017 13:31:16 GMT

A dab of Blue LocTite would work.

Snug them up but use a JIS type screwdriver so you don’t mess up the screw heads.

Re: 70 200 usm is L falling to bits

ebiggs1 — Thu, 02 Nov 2017 13:34:20 GMT

"A dab of Blue LocTite would work."

Re: 70 200 usm is L falling to bits

cicopo — Thu, 02 Nov 2017 17:41:00 GMT

I agree with using a JIS screwdriver too. They may look like a Philips head but they will be JIS.

Re: 70 200 usm is L falling to bits

ebiggs1 — Thu, 02 Nov 2017 18:15:30 GMT

This is why when somebody suggested on a different thread to try Grainger for Canon lens screws is a fruitless idea.

Re: 70 200 usm is L falling to bits

Waddizzle — Thu, 02 Nov 2017 22:02:08 GMT

@ebiggs1 wrote:
This is why when somebody suggested on a different thread to try Grainger for Canon lens screws is a fruitless idea.

Places like Grainger carry nearly everything when it comes to hardware. I have ordered plenty of replacement screws for electronic gear from Grainger for decades, including gear made overseas in Europe and Japan.

Re: 70 200 usm is L falling to bits

ebiggs1 — Fri, 03 Nov 2017 13:31:29 GMT

Good luck in finding those screws. Have at it.