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Torches: Discuss Ideas for opening a D8R in the Dive Kit and Equipment forums: My UK D8R batteries have run out but this time im finding it impossible to unscrew the head to get ...

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Old 11-08-06, 02:16 PM
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Ideas for opening a D8R

My UK D8R batteries have run out but this time im finding it impossible to unscrew the head to get at the batteries to charge. Anyone got any tips or ideas how to do this? Ive tried soaking it in very hot water and other things but the head seems firmly jammed on.
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Old 11-08-06, 02:21 PM
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Quote:
Originally Posted by String
My UK D8R batteries have run out but this time im finding it impossible to unscrew the head to get at the batteries to charge. Anyone got any tips or ideas how to do this? Ive tried soaking it in very hot water and other things but the head seems firmly jammed on.
Oil filter wrench?

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Old 11-08-06, 02:24 PM
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Old 11-08-06, 02:25 PM
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Grip it between your knees and go for it. Works for me.
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Old 11-08-06, 02:26 PM
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Grip it between your knees and go for it. Works for me.
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Old 11-08-06, 02:27 PM
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Old 11-08-06, 02:35 PM
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Quote:
Originally Posted by String
My UK D8R batteries have run out but this time im finding it impossible to unscrew the head to get at the batteries to charge. Anyone got any tips or ideas how to do this? Ive tried soaking it in very hot water and other things but the head seems firmly jammed on.
Put it in a hot basin of water and let the air inside heat up and expand?

Gareth
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Old 11-08-06, 02:45 PM
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Quote:
Originally Posted by garethwebber
Put it in a hot basin of water and let the air inside heat up and expand?
There's a chance it's proving difficult to open because the inside is already pressurised due to gas being released from the batteries.

I'd be very careful opening it, try to crack the seal very gradually, with the lens bit (potential projectile) facing away from you. I've heard about the tops blowing off mini Q40s with the same problem.
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Old 11-08-06, 03:01 PM
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I have a C8R has the same 'issues'. If the batteries have given off gas then the inside will be pressurised, bung it in the freezer to reduce the pressure. Normally I can manage to man handle mine but the rubber ring around the lens often just slips. They are a bitch!!! Which is one reason why my next torch will be rechargeable throug a jack pin.

Matt
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Old 11-08-06, 03:20 PM
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May try the freezer idea next then as nothing to lose.

Not sure if its battery gas pressurising it or the pressure from a dive squeezing it shut causing the problem.

Ive had the issue before but just about managed to open it, this time though no joy. There doesnt seem to be a vice big enough to hold it either.

Im seriously considering a last resort drilling through the casing to release pressure and filling the hole with something afterwards. Really dont want to do that if theres an alternative though.
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