RE 66177-10-R/2021-11-16, Bosch Rexroth AG
Repairing the flange surface |
Load-sensing control block SB11 15
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6 Repairing the flange surface
6�1 Sealing elements for control block segments
Table 6: Sealing elements
Position
Designation
Use
Dimension
Quantity
O-ring
Reservoir, return flow
R
18 × 2.5
1
O-ring
Inlet
P
18 × 2.5
1
O-ring
LS signal
Y
18 × 2.5
1
O-ring
Pilot oil supply
X
9 × 2.5
1
O-ring
Pilot oil return
Rx
9 × 2.5
1
Table 7: O-ring thickness – Flange surface protrusion
O-ring
Ø
d
Protrusion X
1.5 mm
0.3 to 0.4 mm
2 mm
0.4 to 0.5 mm
2.5 mm
0.5 to 0.7 mm
3 mm
0.6 to 0.9 mm
1�
Remove the O-rings from the ports
P
,
R, Y, Rx
and
X
.
2�
Insert new O-rings into the ports
P
,
R, Y, Rx
and
X
in the flange surface.
R
P
Y
Rx
X
▲ Flange surface
Control block segments with a recess for an O-ring for
X
(without continuous
bore through the valve housing) must also be equipped with O-rings.
Flange surfaces
O-ring protrusion
Disassembly/assembly,
sealing elements
