4.
Insert the bit of the torque screwdriver into the
collet chuck and hold it in place.
5.
Put the torque screwdriver on the bit and
unscrew the screw by twisting the torque screw-
driver.
F
IG
. 76 – L
OOSENING THE SCREW OF THE BLANK HOLDER COLLET
CHUCK
6.
Remove the collet chuck and the screw from the
blank holder. Put both items aside within reach.
F
IG
. 77 – R
EMOVING THE COLLET CHUCK FROM THE BLANK HOLDER
7.
Clean the inner cone of the blank holder with the
cleaning cone of the service set.
8.
Clean the collet chuck with the brush of the ser-
vice set.
NOTICE
Damaging of the collet chuck when
using the wrong grease or applying the
grease incorrectly
If you use unsuitable grease or if grease gets into
the longitudinal slots of the collet chuck, the
machine may get damaged.
Ensure that no grease gets into the lon-
gitudinal slots of the collet chuck.
Only use a very small, about pinhead-size
amount of the grease.
Only use the provided grease of the service
set.
9.
Clean the outside of the collet chuck.
10.
Grease the collet chuck. Apply the grease only to
the conical surface of the collet chuck.
F
IG
. 78 – G
REASING THE COLLET CHUCK
;
SURFACE IN WHICH
GREASE IS TO BE APPLIED IS MARKED IN BLUE
;
SLOT THAT MAY NOT
BE GREASED IS MARKED IN RED
11.
Check the condition of the fixing screw and
replace it by a spare screw if necessary.
12.
Push the collet chuck with fixing screw into the
blank holder as far as you can. Twist the collet
chuck until it snaps in place and is properly
seated. Depending on the position you may
need to twist it up to 360°.
Z4 – Maintenance and do-it-yourself
EN 61
Original Operating Instructions:Z4
Version: 12/5/2018
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