Bosch rexroth SB24 - 6 Repairing the Flange Surface; Sealing Elements for Control Block Segments

18/24 Repairing the 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 Use Dimension Number
O-ring Reservoir, return flow
R
27 × 2.5 1
O-ring Inlet
P
22 × 2.5 1
O-ring LS signal
Y
18 × 2.5 1
O-ring Pilot oil return/supply
Rx, X
9 × 2.5 2
O-ring
Return flow secondary
pressure relief valve
RfB
14 × 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, 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.
Table 8: Disassembly/assembly sealing elements
Flange surface Disassembly Assembly
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.
Flange surfaces
O-ring protrusion
Disassembly/assembly
sealing elements