EFA VB 115 Betriebsanleitung Seite 29

persons. The use of spare parts other than original
Schmid & Wezel parts shall void all warranty.
Spare parts must be replaced by
authorised specialist technicians.
Prior to replacing spare parts,
disconnect the stunning device
from the compressed air supply
line.
If possible, always loosen all 4
hexagon screws (74) as they must
be tightened with a torque of
exactly 67 Nm.
4.1.1 Replacing the piston (29)
Loosen the hex nut (61), pull up the bracket
(58a) and swivel it to the side.
Remove the housing cover (44) and pull out the
valve insert (37) with the retainer (41) and
piston.
Before reinstalling the piston, apply a little oil or
grease to the O-rings and insert them without
using force.
Place the bracket (58a) as close as possible to
the housing cover (44).
Tighten the hex nut (61) with 40 Nm.
4.1.2 Replacing the buffers (49 or 49a)
Remove the piston by proceeding as described
in chapter 4.1.1 "Replacing the piston (29)"
(page 6).
Lift the chevron-type seal (42) using 2
screwdrivers.
Pull the valve gates (35 and 36) and cylinder
(32) upwards to remove them from the device.
Do not damage the O-ring (14) when installing
it in the housing. Never use any force when
handling the stunning device!
If necessary, remove any burrs from the cylinder
end before installing it. Apply a little grease to the
O-ring (14) and centre the assembly with the
narrower cylinder end.
Schmid & Wezel
D 75433 Maulbronn
4.1.3 Replacing the housing cover (44)
Inspect the housing cover (44) for damage. If
necessary, replace it without delay (risk of injury
from escaping compressed air)!
Insert the O-ring (44a) into the groove.
Insert the 4 screws (46) with washers (45) and
tighten them with 10 Nm.
4.1.4 Replacing the release valve (18)
Unscrew the bolt (56) and drive back the spiral
roll pin (25).
Pull out the release valve.
Before installing them, apply a little grease or oil
to the outer O-rings of the release valve.
Check release point,
(see vertical section B-B, Appendix A, page 16).
4.1.5 Replacing the cylinder foot (51)
Remove the 4 screws (74) and pull the cylinder
foot out, tapping it slightly from the side.
When reassembling the cylinder foot, ensure
that the bearing face of the attachment (58) is
clean.
Place 2 disk springs (73) on top of each other,
ensuring that they are properly aligned, and
tighten the 4 screws (74) with 67 Nm.
Caution: Non-compliance with the prescribed
tightening torque might result in the stripping of the
treaded inserts in the housing (1).
4.2 Adjusting the spring-loaded
pulley
The spring-loaded pulley can be adjusted by turning
the PLUS/MINUS screw at the housing (see fig. 3).
Figure 3: Spring-loaded pulley
Turn the screw in MINUS direction until the tool
is balanced and suspended at the correct
height.
If it is not possible to pull more cable from the
pulley, it is jammed and must be readjusted.
Page / Seite
6 / 21
Version / Ausführung
11.2011