Vickko
Veteran
I sorted out a Hasselblad 150mm f2.8 FE lens with sluggish iris tonight.
For those who wish to follow:
1. unscrew the front name ring with a rubber tool. There are no notches for a tool, you must use a rubber tool.
2. once the name ring is removed, you see 6 screws. Take them out; they have been thread-locked in. Now you can remove the bayonet hood.
3. now unscrew the front lens group.
4. to get to the iris assembly, start at the rear. Take off the bayonet flange (8 screws), and cover shield (3 screws)
5. now take out the FE electronics stage, another 8 screws. Let the wires hang
6. find a copper flat lockring, and remove it. It is very thin.
7. remove the iris activation sleeve - carefully slide it out.
8. you will see three large silver screws that hold the rear lens assembly to the mount. Remove them, and take out the rear lens group with the iris.
9. The iris is in a case, and you can see the three screws that hold the cover. Remove it and you have full access to the iris blades for cleaning. My blades were covered in oil, causing the sluggish movement.
Note the order and nesting of the blades - there are two sets of 5 blades, the upper form the iris hole, the lower form the auxiliary coverage for the blades.
Despite the description, it is a very straightforward task, far easier than a C/CF series lens.
Vick
For those who wish to follow:
1. unscrew the front name ring with a rubber tool. There are no notches for a tool, you must use a rubber tool.
2. once the name ring is removed, you see 6 screws. Take them out; they have been thread-locked in. Now you can remove the bayonet hood.
3. now unscrew the front lens group.
4. to get to the iris assembly, start at the rear. Take off the bayonet flange (8 screws), and cover shield (3 screws)
5. now take out the FE electronics stage, another 8 screws. Let the wires hang
6. find a copper flat lockring, and remove it. It is very thin.
7. remove the iris activation sleeve - carefully slide it out.
8. you will see three large silver screws that hold the rear lens assembly to the mount. Remove them, and take out the rear lens group with the iris.
9. The iris is in a case, and you can see the three screws that hold the cover. Remove it and you have full access to the iris blades for cleaning. My blades were covered in oil, causing the sluggish movement.
Note the order and nesting of the blades - there are two sets of 5 blades, the upper form the iris hole, the lower form the auxiliary coverage for the blades.
Despite the description, it is a very straightforward task, far easier than a C/CF series lens.
Vick
