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Schematic of exploded Hasselblad slow shutter

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eli griggs

eli griggs

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After fruitlessly searching for an exploded diagram of the Carl Zeiss Hasselblad slow shutter mechanism, and finding nothing but every other Synchro Compur shutter ever made. I need your help.

Please, if you have this image, on hand, I'd really appreciate your help in sending me a good file of how this is supposed to look, blown apart so I can reassemble mine.

Cheers
 
Dude, what happened? Just the other day you wrote that repairing Blads was a joke that even Forest Gump could master.

I’m afraid that you are at the Ziploc stage. Take the Ziploc bag, insert all the pieces, and send to a competent repairman.

——-
eli griggs said:
Grab a good manual on repairing the Body(s) only, there's at least one of Hasselblad's own, on line, likewise a lens repair manual and watch Hasselblad repair videos, on YouTube, Including "Fix old Cameras" and "Mikeno62" and pay attention to their tool list, especially the Gray rubber lens set, and suction cup.

A lot of Hasselblad repair is easy to do if you're of average intelligence, AND can follow directions, with liberal use of the pause and 'back' keys on your pc.

Forest Gump would have been the perfect Hasselblad Camera and Lens repair person, had he been tasked that way, so take heart, you're only a few steps away from at least repairing/replacing light traps on your film magazines, and getting jammed lens off a 500 series camera (View AnnyB for that), jobs others would charge you big dollars that can instead, go to new film/projects.

Enjoy your new setup and remember, the Hasselblad was designed to be simple, and work, as a combonation of elements, so do no fear the unknown, and buy good screwdrivers, (Precision German, IMO).”
Click to expand...
 
Last edited:
The slow speed shutter was and is the hangup, as from the begining, in it was tinkered with before I got to it and as I removed it for cleaning in alcohol, the top plate separated from the lower plate and the in betweens were dropped out.

I'll stand by my original post, that with good instruction, these these are dead simple to take apart and put back to work, however, common sense tells us that those parts need to be placed in the correct order, for this tiny machine, with it's assembled mechanism hidden and now it's parts jumbled, to work properly, needs information.

The information I need is an exploded view of this actual shutter, showing the correct placement of all gears, assemblies and springs.

Nothing too hard about that and tonight I spent some time practicing putting a tiny screw, about 1.5mm, total, back into it's place, on the opposite post, and three methods for doing so, weak thread lock to the small screwdriver head/screw head, thread grease, and ad by hand, directly into position.

Later today, I'll also try the smallest touch of Lucia's red and tacky, in the tiny screw-slot, and cleaning all traces from it afterwards.

Knowing when to ask for more info that you've got to hand, does in no way mean a job is too difficult to do, it just means you need help finding that information, as it is unlikely to be delivered by Santa two months from now in a stocking.

Give repair a try, it's fun to do some new things AND keep your thinking day to day, fresh.

IMO.
 
It sounds like, to me, that you are asking for a diagram of the speed regulating timing assembly. if so it will two plates in an arc shape, a pallet, coiled torsion spring on a gear, two or three additional gears and an operating lever.
If so can you post a clear picture of all the parts?
 
eli griggs said:
After fruitlessly searching for an exploded diagram of the Carl Zeiss Hasselblad slow shutter mechanism, and finding nothing but every other Synchro Compur shutter ever made. I need your help.
Click to expand...
I've never seen the inside of a Hasselblad shutter, but if you browse the Deckel documentation for Compur shutters, you see the same internals being re-used repeatedly to suit the external cosmetics of various camera manufacturers, complete with shutter speed and aperture rings, only waiting for the front and back cell assemblies. Why re-invent the wheel when they have a proven design? So, I'm surprised you do not find inspiration from one of the documented Deckel/Compur technical manuals.

Have a look at:
http://www.suaudeau.eu/memo/manuels_rep/obturateurs/compur_rapid_shutter_repair(2).pdf
page 23 and following
also:
http://www.suaudeau.eu/memo/manuels_rep/obturateurs/Compur-shutter-repair-manual.html
section 4, table CN110-018, about a model with "automatic depth-of-field indicator". What could that mean apart from Hasselblad?
 
NB23 said:
Dude, what happened? Just the other day you wrote that repairing Blads was a joke that even Forest Gump could master.

I’m afraid that you are at the Ziploc stage. Take the Ziploc bag, insert all the pieces, and send to a competent repairman.

——-
Click to expand...
+1​
My Hasselblad repairman told me to be careful when removing a stuck lens because there is a nearby screw which if removed requires a full disassembly to get it back into place.
 
This is fixable, but it's a PITA, and be careful not to break off a die-cast pin which engages with the shutter speed cam. Sorry, I did not take photos of the assembly, and I don't know of any exploded diagrams. I suspect the escapement was simply replaced as a module, but it's all too easy to remove the wrong screw and have the whole !@#$ thing come apart. But in my case, the aforementioned pin had already broken off, so I had to disassemble in order to drill out the remains and install a new one.

Sans diagram, I studied the various bits and realized that there's just one way to assemble in which the gears mesh properly. I eventually worked out a method of holding parts in place using thin strips of painter's tape, allowing me to retension the spring to what seemed about the right amount, but I'm sure there must be a better way.
 
Compur only made 3 or 4 shutters which were scaled from 00 to #1. Those base shutters were adapted to many makes of cameras and large format lens. They underwent changes during production. Late versions of the same shutter will differ from the version in the manual, usually in the release and flash sync.

When installing the gear with the coil tension spring turn the gear until the spring is compressed to about half the diameter of the gear. I too use thin strips of painters tape to hold the gear position. Two or three gear teeth of that gear looser or tighter will determine if all speeds are good or only some of them good.
https://learncamerarepair.com/downloads/pdf/Compur-Factory-Shutter-Repair-Manual.pdf
 
Sirius Glass said:
+1​
My Hasselblad repairman told me to be careful when removing a stuck lens because there is a nearby screw which if removed requires a full disassembly to get it back into place.
Click to expand...
Sounds like a watch I once had. I think I still have the screw around somewheres.
 
That photograph reminds me of a cave painting - which is somehow symbolic, although I can't come up with a good description of the symbolism.
 
This is my best guess based on other timing mechanism I've worked on. This appears to be very old as some parts are an old design.
IMG_20201025_151608036~2.jpg

The hooked end of the coil torsion spring 3 fits into the slot in 3a and sits into hole 3. It should go in first, turn until the spring is 1/3 to 1/2 of its tightening range then secure with thin strips of tape to the mount plate so that the tape can be easily removed and the tape does not interfere with the mounting of other parts. The small gear teeth of 4 mesh with the outer gear teeth of 3. 5 goes on its shaft with the pin just outside the flat section by its pin. 5 meshes with the larger teeth of 4. Small gear teeth of 3 meas with the large gear teeth of 6. The small gear teeth of 6 mesh with 7 with 7 positioned at the end of its gear teeth at the fully released position. Lever 9 should contact post on 7 and push 7 to its fully engaged position. The spring on 9 should return 9 and 7 to the fully released position. I may be incorrect on 8 as I.m not sure of its purpose but that should become obvious once 3 through 6 are installed and 7 and 9 set in their respective holes. 1 and 2 are the plates.
 
MattKing said:
That photograph reminds me of a cave painting - which is somehow symbolic, although I can't come up with a good description of the symbolism.
Click to expand...

It's a recipe; think sandwich.
 
Shutterfinger, I apologize for no acknowledging your very helpful post and, as I approach it slowly; I'll will let you and others here know the results.

Thank you very much for taking time to help me and the other readers of this thread, see what's what in the ten elements of this mechanism.

Eli
 
shutterfinger said:
This also suggest that the pallet 321 is missing .
Click to expand...
I’ve been trying to get the time to post this all day! I think you’re missing the pallet. There is also some very unusual wear patterns and a lot of built-up gunk to be cleaned. That lens must have been a complete mess.

and on your part 305, Sector gear, is the whole post present?. It looked stubby to me but that might be optical illusion... or that I need my spectacles represcribed.
 
BrianShaw said:
I’ve been trying to get the time to post this all day! I think you’re missing the pallet. There is also some very unusual wear patterns and a lot of built-up gunk to be cleaned. That lens must have been a complete mess.

and on your part 305, Sector gear, is the whole post present?. It looked stubby to me but that might be optical illusion... or that I need my spectacles represcribed.
Click to expand...

Thank Brian, no 305 is complete, and the spring, 320 is in-place in it's pawl.

There was no part 321 in this shutter, as it came to me, and perhaps that was the issue, it would also explain how this thing blew-up on me when lifting it free of the shutter body.

By-the-way, this lens dates on the Hasselblad Historic Site as being made in 1973, but it's possible, in my opinion, that the assembly in question was old stock that was made sometime before older lenses, seeing the 974 change to CF specs might have had the priority to make new.

I'll soak this entire thing in some Naphtha, overnight and see what I can clean up tomorrow, and do a soak on the fast encampment but that one will remain intact and in working order.

I'm tempted to go ahead and open the 150mm lens up, just to compare these parts, in their assembled state and see if there was a part 321 in the slow mechanism.

That said, if this did no have 32 and I do have it all here, I'll go ahead and put these bits, back together; I really want to leave the other lens repair until later, as I have a chance at getting out for some shooting this week.

Thank all of you in this thread for your contribution, and, if you have more to add, Please, Jump In, the Waters Fine!

Eli
 
Without a pallet you won’t get the “bzzzzzzzzt” for long shutter speeds. You need the “bzzzzzzzzt”!
 
shutterfinger said:
321 is a necessary part for the timing to work properly.

What size is the shutter #0 or #1?
What is the length of plate 1 mount hole to mount hole (end to end)?
Click to expand...


End to end it looks to be 33.25mm, or, 1.3090 inches.

Outer holes, far edges, 30.62mm, or, 1.2055 inches.

Cheers,
Eli
 
That's good to know, I'll have to take note of which of the C, C T* lenses have which size Synchro Compur shutters, as there was no joy on the Hasselblad sites I looked to for this information, on that the shutters are Synchro Compur for those lenses and Prontors for the CFi, etc.

I appreciate you're looking for a part amongst your shutters, I think I have an old press lens in this shutter, and I'll check that one out now.
 
Do these help?


​
 
Yes, these are good videos and I have watched them and others to give me a starting point in lens/camera repairs.

Thanks for posting them, as I'm sure others will enjoy them as well.
 
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