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HELP! Aquatica 5DMK2 loose rubber wheel on main dial


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#1 influid

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Posted 28 January 2012 - 10:54 AM

Hello,
the Aquatica housing for 5DMK2 I purchased recently and never dived with (but in the bathtub for testing) fails operate the main dial on the camera.

The problem is the following: on the right side of the camera housing is the main dial access knob. This knob rotates gears inside the housing. At the end of the gears is a metal axis with a rubber wheel at its end. This rubber wheel is pressed against the main dial when the camera is inserted. Rotate the knob and you operate the main dial.

However, in my housing, the rubber wheel is loose on its axis. When NOT under pressure, it rotates fine along the axis and stays in place. However, when the camera is inserted and secured in the housing with the saddle attached, it fails to rotate the main dial. It simply doesn't have enough grip and let the axis turns on its own.

I contacted Aquatica just today and I'm sure I'll get a quick answer. However, I was wondering if any of you already had a similar issue. And if yes, I'm eager to hear about how you fixed it.

Looking for a solution and trying to figure out what was the issue, I successfully removed the wheel from the axis, without any resistance. Of course, I wouldn't have pulled it away if I felt any kind of resistance.
After its removal, the wheel goes back in place nicely but the problem remains. The wheel is roughly the same size as a tire on a lego car.

So I thought I should find a way to fix it properly. One thing came to my mind: GLU. Since I never had to use glue in my previous housings (Sony DVcam, Olympus PT-5050, GoPro), I have no idea what are the risks related to the use of glu in this kind of environment. Also, maybe it's easy to remove for a good reason ! Fixing it might create more troubles than it solves.

That's why I'd like to share some experience with you. Maybe I just miss something very simple. Like I said, it's the first time I operate such a housing. I'll keep the topic updated after Aquatica's reply. Feel free to drop a line if you have suggestions of questions, they are welcome.

Bye

#2 Stewart L. Sy

Stewart L. Sy

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Posted 28 January 2012 - 12:06 PM

Hi Influid,

Most of the gears in the Aquatica housings are held tight to the control shaft by tiny grub screws. The one you were able to pull out was likely loose. The grub screw is the small silver dot on the side of the gear. You'll need a .05" or 1/16" allen wrench and align the screw with the flattened part of the shaft. Tighten the grub screw and you're good to go.

Cheers

Stewart

www.stewartsy.com
SLS Photography, when your images matter....
Aquatica, Amphibico, TLC, ULCS (Philippines), Stix, iTorch, FIT, Magic Filter Dealer
Philippine Dive Trip Specialist


#3 influid

influid

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Posted 28 January 2012 - 03:21 PM

Hi Influid,

Most of the gears in the Aquatica housings are held tight to the control shaft by tiny grub screws. The one you were able to pull out was likely loose. The grub screw is the small silver dot on the side of the gear. You'll need a .05" or 1/16" allen wrench and align the screw with the flattened part of the shaft. Tighten the grub screw and you're good to go.

Cheers

Stewart


Hi Stewart,

many thanks for the tip. Indeed there's 2 tiny screws on the side of the shaft. Correct me if I get it wrong: by tightening the screws, it will block further the rubber wheel that sits on top of the shaft.
It seems however I don't have the right size of allen wrench, either too loose inside or too big. I'll give it a test with the proper allen wrench and let you know if that fixed it.

Best regards,
François

#4 Stewart L. Sy

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Posted 28 January 2012 - 03:47 PM

Hi Francois,

The screws will lock the rubber wheel onto the control shaft, usually the shaft has a flat spot machined on it, make sure to align the screw with the flat area.

Stewart

www.stewartsy.com
SLS Photography, when your images matter....
Aquatica, Amphibico, TLC, ULCS (Philippines), Stix, iTorch, FIT, Magic Filter Dealer
Philippine Dive Trip Specialist


#5 influid

influid

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Posted 02 February 2012 - 11:10 AM

Hi Stewart,

I got some news from Aquatica as expected.

But first, I tried to fix the screws and found the right size of allen for metric system: it's a 1,5 mm milimiter one and fits. For further info, here's an equivalence chart.
However, the problem was not coming from the shaft itself. It does get loose when the 2 screws are untied. But it doesn't fix the rubber wheel from spinning around.

The explanation is: remove the rubber wheel and clean it with rubbing alcohol of any trace of lubricant that might have contaminated it. Shit happens but this one can be cleaned.

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I'll get my hands on rubbing alcohol and post the results here. And btw, it's a bad idea to glu it.

#6 influid

influid

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Posted 04 February 2012 - 05:02 AM

The isopranol suggestion from Aquatica worked. I can operate the main dial without slipping or even jumping.

For those in Germany, isopropanol can be only be found in pharmacy. A bottle of 100 ml costs around 5 euros and contains 2-propanol.

Problem solved, I'm ready to go.

Cheers !