Disassembly, Assembly; Disassembly Of The Pneumatic Motor; Dismantling Of Eccentric Shaft; Assembly Of The Pneumatic Motor - EFA 620 Betriebsanleitung

4. Disassembly, assembly

Disconnect the machine from the
compressed air network before
starting any assembly work!
Use Assembly Set 007 899 664.
The drawings and item numbers necessary for as-
sembly of the machine can be found in Chapter A.1
"Maschinen-Komponenten / Machine Components"
(p. 23).
4.1 Disassembly of the pneumatic
motor
Remove head screw (45) with hexagon key (48)
from valve housing (37-44).
Remove the valve housing from housing (1).
Unscrew disc (34) (right-hand thread!).
Remove air duct (33) and motor (23-32) from
the housing (1).
Clamp back plate (30) with withdrawal tool (67)
and press rotor spindle (23) with mandrel (64)
out of grooved ball bearing (32).
Remove stator (28) and rotor slide (29).
Insert rotor spindle (23) in assembly direction
(68) and unscrew drive bevel gear (27) with sin-
gle-head wrench (61) from the rotor spindle.
Press spacer bushing (24), front plate (25) and
grooved ball bearing (26) from the rotor spindle.
Clean all parts, inspect for wear and oil lightly.
Replace rotor slide (29).

4.2 Dismantling of eccentric shaft

The eccentric shaft can only be removed from the
dehider head when the pneumatic motor (23-32)
has been removed from the housing (1).
Unbolt blade cover (8) with hexagon key (49).
Remove dehider blades (5).
Remove countersunk screw (22) with hexagon
key (48) and lift off bearing cover (21).
Drive eccentric shaft (12-20) out of the bearing
cover (21) by tapping gently with a hammer on
ejector bushing (66).
Place bushing (18) with the largest possible face
area (by turning eccentric shaft (12)) onto the
Schmid & Wezel
D 75433 Maulbronn
upper part of plate (65).
Remove connecting arm (16) out of the
recessed part of the plate.
Press out eccentric shaft (12) with mandrel
(64).
Remove the grooved ball bearings (19 and 20)
using withdrawal tool (69).
4.3 Assembly of the pneumatic
motor
Assembly is performed in the reverse order of the
disassembly procedure.
Pressing in rear grooved ball bearing (32):
Place the motor package onto drive gear (27),
place back plate (30) centered with dowel pin
(31) onto stator (28).
Place plate springs (30a) into back plate (30) in
such a way that the outer contact surface of the
plate springs (30a) touches the outer ring of
grooved ball bearing (32).
Press in grooved ball bearing with mounting
mandrel (62) until it bottoms (see Fig.).
30
23
Dowel pin (31) must engage in stator (28) and
air duct (33) for locking. If the rotor spindle
rotates slightly while stator (28), front plate (25)
and back plate (30) are stationary, the motor
package is correctly assembled.
Push the motor package into housing (1) until it
bottoms.
Install air duct (33) centered.
Screw in disc (34) (position: with threaded bore
in lateral position).
The O-rings (36 and 36a) must be between the
valve housing (37 - 44) and the housing (1)
when the bolts are tightened!!
Tighten head screw (45) uniformly with hexa-
gon key (48).
Tightening torque: 2.9 Nm
Seite/ Page
17/ 28
62
32
30A
Ausführung/ Version
03.2012