AWH Tanko RT, Operating & Installation Instructions Manual, Page: 107 / 132

ATEX Retractor System TANKO-RT/-RTS
7 Maintenance Translation - Operating/installation instructions 2020/01 97/121
3. NOTE The cleaning device can be damaged if not set down in a safe place!
 During subsequent work, take particular care to ensure that the disassembled pneumatic section
of the cleaning device is stored safely, particularly the centering adapter (1.20).
4. Check that the spray head is able to rotate smoothly. If replacement of the spray head is necessary,
follow the procedure set out in Section 7.4.4 points 2) to 5).
5. Remove the O-rings from the spray head (2.05) and the centering adapter (1.19).
6. Install the new O-rings according to Figure 7.4-5 .
Make sure the new O-ring is undamaged and pay attention to correct material allocation
(see
Table 7.4-2 or order).
7. To replace the piston ring (1.10) remove the old piston ring.
Do not damage the O-ring (1.08) beneath it.
7.
NOTE
Burning hazard
To make it easier to fit the new piston ring, it should be heated first, e.g. in a water bath
(70 °C – 90 °C / +158 °F – 194 °F).
8. To replace the damping ring (1.05), loosen the retaining screws (1.09) and then the damping ring
holder (1.04).
10. Replace the damping ring (1.05) and reassemble on the piston (1.03) with the damping ring
holder (1.04) and retaining screws (1.09). When doing so, secure the threads with Loctite “243”
(for tightening torques, see
Table 7.5-1 ).
11. When replacing the central bearing, carry out the following work steps:
a) Loosen the set screw (1.24) with the PTFE washer (1.25) and detach the centering adapter (1.20)
from the piston rod (1.02) by turning it counterclockwise.
b) Pull the central bearing (1.11) off the piston rod (1.02) and remove the 2 central bearing
retaining plates (1.12).
c) Mount these in the new central bearing.
d) Install the new central bearing (1.11) with the central bearing retaining plates (1.12) on the
piston rod (1.02).
To prevent damage to the central bearing, the use of an assembly cone (A) and assembly anvil (B)
is recommended when assembling the central bearing on the piston rod.
Figure 7.4-6: Overview of Assembly of Central Bearing with Assembly Cone
e) Turn the centering adapter clockwise to screw it onto the piston rod. Tighten the set screw (1.24)
with the PTFE washer (1.25), see
Table 7.5-1 for tightening torques.
If the PTFE washer is damaged or lost, replace it.
1.11
A
1.02
B