Hasselblad extension tube stuck on lens please help

[borstad_ankdamm]

Using two extension tubes and a Planar 80 mm and somehow operation jammed in the middle of a shoot. Managed to separate the lens (which is connected to a tube) from the H-blad body and now the issue is that i cant separate the tube from the lens... I really dont know what to do here and i cant get to a service place (doesnt really seem worth to repair, would probably cost more than to get a new lens).

 

[Q.G.]

Worst case: you will have to take the extension tube apart, starting with the screws that hold on the rear bayonet plate.

Can you describe what the state of both lens and tube is?
It may be possible to cock both by simply inserting a coin into the slot of the axle at the rear of the tube, turning it clockwise until it locks, or if it does not lock, until the slot is horizontal.

If you can get that far, you will need the help of someone. While you keep the axle from rotating, still using that coin in the slotted end of it, your helper can depress the lens catch and remove the lens.

If that doesn't work, it's disassembly time: the tube will have to come apart.

 

[jeffreyg]

It is a good idea to purchase an unjammer which has two safety covered blades that are the correct sizes for the lens slot and the one inside the body. If that is not available you need a small screw driver. Remove the film back, carefully open the cloth curtains and you should see the "slot" that looks like a screw head. That needs to be re-cocked. If that works remove the outermost tube pushing the release on the inner tube (the one attached to the body) and then remove the other tube as you would remove a lens. When using extension tubes it is best to attach them one at a time and then the lens and when removing them - the lens first and each tube one at a time. also the film advance should be cocked before attaching or removing a tube or lens. If that does not solve your problem seek a repair which I doubt will cost more than new equipment. I hope this helps.

 

[Q.G.]

I wouldn't. Wouldn't spend money on a too expensive tool you do not need.
Those unjammers are nothing special, and a small screwdriver would do equally well.

But in this case, a coin is the tool of choice. The tube and lens are no longer on the camera.
So no need to reach in through the back of the camera.

 

[jeffreyg]

The unjammer is not expensive and worth keeping in your camera case. It is easier and safer to use than a screw driver. I keep two and got them from Calumet. I suspect it jammed because you tried to remove all at once. I have experienced jamming on occasion with extension tubes and what I suggested has always remedied the situation.