This section restricted to Duclos Staff users.

Service Manual: Disassembly/Re-assembly
Screws: Angenieux

Full CLA: 12-15 hrs.
early version had bad batch in production. zoom cam has flaws in manufacturing process that make image shift constantly throughout zoom.
The EZ lenses are notoriously hard to get/keep optically clean due to the several follower channels (ie, contamination entry points). It's highly recommended, when re-assembling, to use the according tap (M1.7 for follower screws) to clean out the dry and flaky white glue that Angénieux uses.
Re-collimate: 1-3 hrs.
Re-align optics: 1-3 hrs.
There are no centering screws in the front group
centering wide end, set screws found in pass through holes in PL mount.
CAUTION!!!! set screws push on doublet # 17/18 which is not protected in a housing. can chip and break doublet!!!!!!
Image shift in zoom: 14-15 hrs.
Zoom section has MANY followers that are color coded for the different ODs. if image shift is present, swapping and changing followers will be necessary. This is time consuming.
Hazy element in rear optical block: 2 hrs.
if haze is located in front most section of optical block, it may clean off. quote investigation first!
Z+I only: 12-15 (Full CLA required to access zoom)
To fully access Z+I, the focus assembly/helical/optics needs to be removed first; Z+I cannot be accessed from the rear. Additionally, the white powdery glue they use on their follower screws almost always flakes off into the optics, necessitating the need to remove and clean the zoom optics, thus now practically becoming a full CLA.
Convert IRO: 1 hr.
See Service Manual above!
Internal Iris mech.: 12-15 hrs.
to access internal iris mechanic/ring, entire lens must come apart. focus and zoom cams must be removed to access and remove internal iris control ring. many, MANY cam followers in focus, zoom and iris. proceed with caution!
Front Engraved Ring:
The EZ-1 has 2 styles of front rings. The first batch of EZ-1 had the engraved witness marks painted with a fluorescent color (#312646). The following batches of EZ-1 have a regular paint on the witness marks, like the EZ-2 (#322966) (because factory originally started with glow in the dark paint but couldn't keep consistent color so switched to regular paint later)
Zoom scale:
Ver 1 – Glow in the dark yellow
Ver 2 – Mellow yellow

Screws:
optical block: SCHS M2x6mm # ANG-920206009
red compendium ring (QTY: 3): M1.7×3 pan head jcis type 3 (black) # ANG-912173009
iris scale (QTY: 6): M1.7×3 pan head jcis type 3 (black) # ANG-912173009
zoom scale (QTY:3): M1.7×3 pan head jcis type 3 (black) # ANG-912173009

Accessories:
Zoom stick: 4mm thread X 4mm deep
Lens support ring (above focus scale) and Zoom witness/SN ring: M3x4.5 deep
…end of Staff section