Festo DSBC Series, Repair Instructions

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50 / 56 Festo 7DSBCa_en
4.9.6 Inserting the piston rod into the cylinder barrel
1. Clean the cylinder barrel with a cloth (

Chapter 5.1 on page 53 ).
2. Grease the following components with the grease included in the set of
wearing parts:
Component Greasing
Inside surface of cylinder barrel apply a thin film
1)
of grease
Surface of piston rod apply a thin film
1)
of grease
Piston seal lip rings
3)
apply thin film
1)
of grease on the outside
Piston surface between lip rings
(grease reservoir
2)
)
fill uniformly with grease
Cushioning boss / buffer sleeve apply thin film
1)
of grease on the outside
1) 
Chapter 5.2.1 on page 53
2) 
Chapter 5.2.2 on page 53
3)
Do not (completely) fill the installation groove of the lip rings / T-rings and
reduction of the seal to the sealing lip (outside) with grease.
3. Position the piston flat against the front side of the cylinder barrel.
Note
The sealing lip of the lip ring may not fold back against the inside of the
piston.
If necessary, use a flat object without sharp edges to insert the lip ring into
the cylinder barrel.
4. Insert the lip ring in the cylinder barrel by tilting and turning the ring slightly.
5. Push the piston completely through the cylinder barrel until the first lip ring
protrudes from the end of the cylinder barrel.
6. Pull back the piston rod until the piston sits fully in the cylinder barrel.
This procedure ensures that the sealing lips of the two lip rings sit correctly
in the cylinder barrel.
4.9.7 Repairing and attaching the bearing and end caps
1. Remove the circlip
1
from the bearing cap
8
.
2. Remove the distance sleeve
2
from the bearing cap.
3. Remove the scraper
3
from the bearing cap.
4. Remove the insert sleeve
4
with scraper ring
5
and O-ring
6
from the
bearing cap.
5. Separate the scraper ring and O-ring from the insert sleeve.
6. Check the bearing
7
in the bearing cap.
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