85L mk II rubber coating breakdown

[TommyLee]

ok
I refused the repair..
because it SEEMS like the rubber assembly is a shell ...covered in the 'grippy' substance..
and no gluing///cleaning required..

so 3 screws hole the assembly on..

seems like a 'sleeve'....

so I will try it myself....
.......
$27.48 + $7 shipping
and 3 screws...
versus I screw from canon repaeirs...ok...
seems a bit much..
however I do understand the repair business
once they 'touch it' they own it for the 6 months warranty...

.........

so
I will report this progress...
////

J.R. you are my personal hero..
if this works as it seems it may...
you saved the day...

so...
pending success of the repair..by me...

if you ever are in Portland Oregon...
I will drive you thru the wine country ...on a personal tour..
including the samples costs etc...and lunch...
...
thanks for that tip...
about the $27 part...

I await the return of lens and arrival of the new part...

 

[TommyLee]

ok
part not arrived... but rejected repair.... lens now back in my arms....
....

6 screws...3 body...3 end
did NOT remove flange...
the shell just slips off....

back together til mailman arrives...

 

[TommyLee]

ok
thank you all..
'repair' completed...
photo shows ...installed... notice the new part has some extra markings that the original did not have...


thanks to J.R. for the lead...towards the part...and ease of repair

 

[Viggo]

Sweet! Thanks for the update, and congrats on a fixed lens 8)

 

[TeT]

Goo Gone in the spray bottle works wonders on the sticky rubber coating fail. You have to scrub the %$@# out of it, but it does come off. It is exactly like a tacky steering wheel and starts with dirt/grime and oils from your hand combined with heat etc...

Never had it happen on a Canon Lens though.. Mostly Nikon Bodies

 

[J.R.]

ok
thank you all..
'repair' completed...
photo shows ...installed... notice the new part has some extra markings that the original did not have...


thanks to J.R. for the lead...towards the part...and ease of repair

Great to see that it worked out!

 

[TommyLee]

thanks again J.R. ....
you helped me a lot with the tip....


and Tet...your comment above....my brother said the oils in my hands were likely the cause...
he is a jet mechanic (retired) and motorcycle racer now...
pretty skilled...fixer
he mentioned the hand oils first thing..
if you touch a bearing with bare hand... you cause troubles...

and I wonder if the moderate heat added to the trouble...like you said..

for Canon...I say good design where you can slide on a replacement..
and of course if they 'repair' the lens in anyway...they sort of have a risk of responsibility
for anything that goes wrong..even if it seems unrelated...
they calibrate, certify and warrantee the lens for 6mos..
so I cant really fault them too much ...for the big price...


///

the thing about this forum and others is...
we help each other ...all the time...

thanks again to all

 

[Canon_Shooter]

thanks again to all

where did you get the part?

 

[TommyLee]

Canon_shooter
........
directly from Canon

Jamesburg N.J.
866-481-2569

quick and easy
credit card on the phone... $27.48 and $7 shipping.....a week...

Tom

 

[ikeithb]

Re: 85L mk II rubber coating breakdown SAME HERE!

Why is this happening? Any ideas on this?

 

[YuengLinger]

Re: 85L mk II rubber coating breakdown SAME HERE!

Why is this happening? Any ideas on this?

DEET did it!!! Sorry for late reply.

 

[TommyLee]

ikeithb
/////
best guess....
oils and contaminants transferred from hands..

as you pass thru industrialized society each day...
you touch all sorts of stuff...
and collect chemicals, contaminants....
one or more maybe act as solvent in a way to breakdown the rubber...
Camera bodies seem to do better than this older lens

this lens design is pretty old... looks the same as mark 1 to me
.... so that may be 15+ yr old tech in that rubbery feeling grip....

two things good here
1. after J.R. gave me a lead... I gained confidence in trying something myself
2. the design was good to let the old part slide off so easily..replacement was almost no effort

one worrying thing...what other lenses or bodies will have this happen?

TOM

 

[YuengLinger]

OP, Tom, do you use insect repellent?

It will definitely break down rubberized coatings. Well documented.

 

[RBC5]

Not just insect repellent, as there are several kinds, but DEET itself. It is a solvent that dissolves plastics, synthetic clothing, even varnish. If you rub enough of it on your hands you can pick up your camera and leave permanent fingerprints in the plastic. Nasty stuff.

 

[Mt Spokane Photography]

two things good here
1. after J.R. gave me a lead... I gained confidence in trying something myself
2. the design was good to let the old part slide off so easily..replacement was almost no effort

one worrying thing...what other lenses or bodies will have this happen?

TOM

Occasionally, someone has a problem with rubber or coatings on cameras and lenses. Its common enough such that replacement rubber parts for lenses and cameras are sold on ebay. You can get them from Canon, of course. I've had literally dozens of Canon lenses and bodies, and have removed those rubber parts to service some of them, but never yet had to replace one, but it does happen.

 

[Rob-downunder]

Hi,

This is not an uncommon issue with the 85 1.2. What you need to do is buy spare part CY3-2154-000, which you can find on eBay US for 50 bucks. There are 6 small screws to undo, slip the old cover off and replace with the new. These screws are only for the plastic cover and do not affect the lens alignment in any way.

In all the cases I've seen online the affected rubber is restricted to this cover, although sometimes there may be a little of the gummy rubber that has been transferred to other parts of the housing, this should be minor and easily cleaned after replacing the faulty cover.

Rob

 

[TommyLee]

YuengLinger


never use insect repellents..
or paints...
or cleaning solvents ...(much)....
I would hazard a guess.... hand cream.... chapstick-like products....stuff like that ... that works its way into our lives...
....

and the part is available from canon...check this thread closely....
for $27 + shipping.....
no need for e-bay

 

[Big_Ant_TV_Media]

looks like its was melting from extreme heat/fire

 

[Billybob]

An amazing topic!

I finally decided to get rid of my 85mm L II. However, when I pulled it out of storage, it had the sticky feel described in the thread.

Glad to find there is an easy--and inexpensive--fix.

 

[JEL]

Don't want to necropost, but just saw this thread and wondered: Is it really a 'problem' (Other than perhaps a visual one)?

I would think it doesn't really lead to less grip, and perhaps even to a better grip (Like resin on a handball perhaps; sticky, messy, but almost glueing the ball to your hand)

I have had the 85 since 2012, but I actually thought this part was made of metal (It hasn't started 'melting' on mine ...yet)