Repairing The Flange Surface; Sealing Elements For Control Block Segments - Bosch rexroth SB24 Manual

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Repairing the flange surface

Flange surfaces
O-ring protrusion
Disassembly/assembly
sealing elements
Table 8: Disassembly/assembly sealing elements
Flange surface
Bosch Rexroth AG, control block SB24/34, RE 66170-10-R/2019-05-15
6 Repairing the flange surface

6.1 Sealing elements for control block segments

Table 6: Sealing elements
Position Designation
O-ring
O-ring
O-ring
O-ring
O-ring
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, X and RfB.
2. Insert new O-rings into the ports P, R, Y, Rx, X and RfB in the flange surface,
see Table 6.
Disassembly
Control block segments with a recess for an O-ring for Rx and X (without
continuous bore through the valve housing) must also be equipped with O-rings.
Use
Reservoir, return flow
Inlet
LS signal
Pilot oil return/supply
Return flow secondary
pressure relief valve
Dimension
R
27 × 2.5
P
22 × 2.5
Y
18 × 2.5
Rx, X
9 × 2.5
RfB
14 × 2.5
Assembly
Number
1
1
1
2
1