FLENDER RUPEX, Assembly And Operating Instructions Manual

Page: 46 / 80

Servicing
8.3 Replacing wearing parts
46 Edition 09/2022 M3600-02en
8.3.2 Replacing buffers (5) as of coupling size 450 to 630
8.3 Replacing wearing parts
NOTICE
Blockage of cross bore of bolts (4)
The liquid screw locking agent can seal the cross bore of the bolts (4). Pressing out the
bolts (4) with grease then becomes difficult or completely impossible.
• Apply only a small quantity of the liquid screw locking agent to the screws (11).
When removing the bolts (4), please observe the information in section Pressing out bolts
(Page 47).
Procedure
1. Remove the hexagon bolts (11) and the washers (8).
2. Remove the bolts (4) with the buffers (5) through the buffer fitting holes.
3. Pull the buffers (5) off the bolts (4).
4. Clean the bolts (4), the washers (6), the buffer fitting holes and the bolt fitting holes in
the coupling parts 1 (1) and 2 (2) or 20 (20).
5. Mount new buffers (5) on the bolts (4). Please observe the information in section Use
and storage of the buffers (5) (Page 74) when replacing the buffers (5).
6. Insert the bolts (4) with the washers (6) and the buffers (5) through the buffer fitting holes
into the bolt fitting holes. Observe any markings that might be provided.
7. Push the washers (8) onto the screws (11).
8. Apply a small quantity of liquid screw locking agent (e.g. Loctite 243 medium strength) to
the screws (11).
9. Secure the bolts (4) with the screws (11) and washers (8).
10.Tighten the bolts (11) with the specified tightening torque T
A
(see Section Tightening
torques and widths A/F (Page 72)).
8.3.3 Replacing buffers (5) as of coupling size 710
8.3 Replacing wearing parts
You can use the following methods to replace the buffers (5) on couplings of size 710 or lar-
ger.
• Replacing buffers (5) without removing the bolts (4) (Page 46)
• Replacing buffers (5) with removal of the bolts (4) (Page 47)
8.3.3.1 Replacing buffers (5) without removing the bolts (4)
8.3 Replacing wearing parts
Procedure
1. Remove the locking rings (12) and the washers (6).
2. Pull out the buffers (5) through the buffer fitting holes.
3. Clean the bolts (4) and the buffer fitting holes in the coupling parts 1 (1) and 2 (2) or
20 (20).