topic Re: 1.4x iii release pin not always engaging in EF & RF Lenses

1.4x iii release pin not always engaging

steve_z — Sun, 21 Aug 2022 18:50:50 GMT

My 1.4x iii release/anti-rotation pin doesn't aways engage and I have to move the lever back and forth a few times on occasion. Not wanting my attached lens/body to fall off, I aways try to check. I would like to send this in for service, but it looks like this adapter is not available for Canon maintenance. I have tried some light lubricant and have tried to make sure that all lubricant is cleaned off. Anyone have any ideas other than shopping around for another one?

Thanks.

Re: 1.4x iii release pin not always engaging

Tronhard — Sun, 21 Aug 2022 19:16:27 GMT

Hi Steve:
Given your advice that Canon cannot or will not do a service on it.

I am curious if this was not the case originally: I would assume not. So, it suggests that some element has changed - either dirt or the mechanism has been deformed. All I can suggest is that I would try Isopropyl Alcohol to flush the pins, rather than add lubricant that might be harder to remove from the system. If you cannot get the mechanism loose all I can suggest is a replacement.

Re: 1.4x iii release pin not always engaging

ebiggs1 — Mon, 22 Aug 2022 14:36:53 GMT

" I would like to send this in for service, but it looks like this adapter is not available for Canon maintenance."

The Canon Extender EF 1.4X III is the current version. DId you call Canon as I would be shocked if it isn't still under service agreement. 1 (800) 652-2666 You can still but them new!

Re: 1.4x iii release pin not always engaging

steve_z — Mon, 22 Aug 2022 18:38:29 GMT

I’ll give it a shot. Their registration web site has a “request service” button next to all the other equipment I have, but not this extender. Another service and support web site also didn’t bring up an option to request service on this extender.
I’ll give them a call. Thanks for the suggestion. I gave the pin a good isopropyl alcohol cleaning as well.

Re: 1.4x iii release pin not always engaging

steve_z — Mon, 22 Aug 2022 22:05:52 GMT

Thanks for the suggestion about calling Canon. Turns out the extender is eligible for CMS or repair if I call and arrange this since the web site is not showing this.