User and Maintenance Manual
“E” Failsafe caliper brake
Model E4N-ID
Date: 2013/07/01
Revision: 1
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4.
Remove the safety screw TE M14.
5.
Cut off the pressure to the thruster and disconnect the power line.
6.
Remove the threaded bars and their nuts which anchor the thruster body E80823, the bell
and the cover (Figure 6); unscrew slowly and carefully so that the preloaded springs are
released gradually.
Figure 6
Take the utmost care in these operations as the thrusters contain preloaded springs.
Therefore proceed gradually with the utmost care and attention until they are
completely released and no longer represent a threat to safety
7.
Remove the cover Z50313 and replace all the springs including those which seem to be in
good condition.
8.
Rest the cover on the springs, align the anchoring holes and insert the threaded rods
complete with nuts and flat washers in their seats. Tighten following a diagonal sequence
locking the unit in position with the self-locking nuts.
9.
Reconnect the flexible hose and power up the thruster (minimum supply pressure of 60 bar
and maximum of 100 bar).
10.
Insert the safety screw TE M14.
11.
Remount the thruster on the brake locking it in position with the ring nuts.
12.
Replace the safety screw TE M14 with the silencer C61846.
13.
Apply the brake a number of times to ensure that the internal thruster slides perfectly and
check for any oil leaks.
9.5.
Changing the brake shoe alignment springs
1.
Power up the thruster (minimum supply pressure of 60 bar and maximum of 100 bar) and
replace the silencer with the safety screw TE M14.
2.
Pull out the pin K90073 and remove the brake shoe D71026 (for brakes with disc of
thickness 25.4 mm) or D71023 (for brakes with disc of thickness 40 mm).
