PRONAR T672ECO, User Manual

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Chapter 6 Technical Support
6.8
PRONAR T672ECO
expander arm bore (3).
• Check that the cylinder piston moves
freely and within the full nominal
range.
• Check that the air vents of the ac-
tuator are not clogged with dirt and
that there is no water or ice inside
(pneumatic actuator). Check the
correct mounting of the actuator.
• Clean the actuator, defrost if nec-
essary and remove water through the
vent holes. (pneumatic cylinder). If
damage is found, replace the actuator
with a new one. When mounting the
actuator, keep its original position
relative to the bracket (7).
• Turn the adjusting screw (4) so that
the marked hole of the expander arm
coincides with the hole of the cylinder
fork
During adjustment, the dia-
phragm (2) must rest on the rear
wall of the cylinder - figure (6.7)
(pneumatic cylinder).
• Install the piston rod fork pin and
washers and secure the pin with
The diaphragm actuator should not be opened. The
membrane is pasted and may lose its seal.
CAUTION
25-45 mm
90
o
B A
C
D
3
5
1
6
7
2
4
589-J.05-1
Figure 6.7
Hydraulic brake adjustment
(1) cylinder piston, (2) cylinder housing, (3) expander arm, (4) adjustment screw,
(5) fork of the cylinder, (6) fork of the fork, (7) cylinder of the cylinder, (A) mark on the piston rod in the
braked position, (B) mark on the piston rod in the fully braked position, (C) position of the arm in the
unlocked position, (D ) arm position in full braking position