Related Manuals for Bosch rexroth SB24
Summary of Contents for Bosch rexroth SB24
- Page 1 Load-sensing control block in sandwich plate design SB24/34 Control block assembly – Control blocks with connecting plate Assembly Instructions English RE 66170-10-R/2019-05-15...
- Page 2 © Bosch Rexroth AG 2019. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights. The data specified within only serves to describe the product. No statements concerning a certain condition or suitability for a certain application can be derived from our information.
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Page 3: Table Of Contents
Disassembly, end plate / end valve 5.2.3 Disassembly, directional valve section 5.2.4 Disassembly, connecting plate Repairing the flange surface Sealing elements for control block segments Repairing the shuttle valve Repairing the spring pre-tensioned shuttle valve RE 66170-10-R/2019-05-15, control block SB24/34, Bosch Rexroth AG... -
Page 4: About This Documentation
About this documentation 1 About this documentation 1.1 Validity of the documentation This documentation applies for load-sensing control blocks SB24/34 of Bosch Rexroth including the following control block segments: • Connecting plate, end plate • Control valves SB24-M, SB24-EHS and SB34-EHS • Hitch control valves EHR24-EHS and EHR24-EM2 ▶... -
Page 5: Representation Of Information
Control valve with CAN bus-controlled electrohydraulic actuating unit for electrohydraulic hitch control EHR24-EM2 Control valve with PWM signal control for electrohydraulic hitch control Control valve Directional valve type SB Hitch control valve Directional valve type EHR RE 66170-10-R/2019-05-15, control block SB24/34, Bosch Rexroth AG... -
Page 6: Abbreviations
Connection valve (with LS signaling direction from right to left) Electrohydraulic hitch control Electrohydraulic actuating unit End valve (with LS signaling direction from right to left) End plate Standard valve (with LS signaling direction from right to left) Bosch Rexroth AG, control block SB24/34, RE 66170-10-R/2019-05-15... -
Page 7: Safety Instructions
• Reworking sealing surfaces is not permissible. Bench vise • Use protective jaws with hard rubber. Sealing and flange surfaces may not be damaged. • Oil-soaked cleaning cloth Required tools • Whetstone • Mechanical tools • Torque wrench RE 66170-10-R/2019-05-15, control block SB24/34, Bosch Rexroth AG... -
Page 8: About These Products
At the final control block segment, the tie rods protrude at the end surface. On the protrusion, the tie rod nuts are located. Example: Bore Bore Bore Bore Thread EP / EVL Bosch Rexroth AG, control block SB24/34, RE 66170-10-R/2019-05-15... -
Page 9: Tie Rod
, different nuts are used, depending on the final control block segment (AP or CVL and/or EP or EVL). ▲ DIN 970–M10 for connecting (AP) and end ▲ Shoulder nut M10 for connection valve plate (EP) (CVL) and end valve (EVL) RE 66170-10-R/2019-05-15, control block SB24/34, Bosch Rexroth AG... -
Page 10: Ehs Pilot Oil Bores
• Without continuous pilot oil line X and Rx, if none of the following control block segment requires the pilot oil line X and Rx. ▲ O-ring side: ▲ Opposite O-ring side: X and Rx with O-ring counterbores and closed O-rings Bosch Rexroth AG, control block SB24/34, RE 66170-10-R/2019-05-15... -
Page 11: Configuring The Control Block
In case of horizontal assembly, the height difference of the individual block segments should be compensated with a suitable underlayer from the fifth control block segment in order to ensure safe orientation of the control block segments to each other. ▲ Compensating height differences RE 66170-10-R/2019-05-15, control block SB24/34, Bosch Rexroth AG... -
Page 12: Assembly Description
Assemble the shuttle valve according to chapter 6.2 "Repairing the shuttle valve". Block segments with shuttle valve with spring pre-tension: Assemble the shuttle valve according to chapter 6.3 "Repairing the spring pre-tensioned shuttle valve". Assemble the sealing elements according to chapter 6.1 "Sealing elements for control block segments". Bosch Rexroth AG, control block SB24/34, RE 66170-10-R/2019-05-15... -
Page 13: Assembly, Connecting Plate
5.1.3 Assembly, directional valve section ▶ Orientate the control block segment with the flange surface of the opposite O-ring side to the connecting plate and slide it via the tie rod screws to the stop at the connecting plate RE 66170-10-R/2019-05-15, control block SB24/34, Bosch Rexroth AG... -
Page 14: Assembly, Directional Valve Section And
O-ring side to the already mounted control block segment and slide on via the tie rod screws to the stop. Screw the nuts and/or onto the tie rods without using any washers or locking washers. Bosch Rexroth AG, control block SB24/34, RE 66170-10-R/2019-05-15... - Page 15 Assembly description 15/24 Align the control block segments to each other and pre-tension the nuts and/or in the order with a torque of approx. 5 Nm. Tighten the nuts and/or in the order . Tightening torque M = 45 Nm. RE 66170-10-R/2019-05-15, control block SB24/34, Bosch Rexroth AG...
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Page 16: Control Block Disassembly
Remove the end plate / end valve via the tie rods … without jamming. 5.2.3 Disassembly, directional valve section ▶ Remove the control block segments one after another via the tie rods … . Bosch Rexroth AG, control block SB24/34, RE 66170-10-R/2019-05-15... -
Page 17: Disassembly, Connecting Plate
Assembly description 17/24 5.2.4 Disassembly, connecting plate ▶ Loosen the three tie rods … by turning them counter-clockwise and unscrew them from the connecting plate RE 66170-10-R/2019-05-15, control block SB24/34, Bosch Rexroth AG... -
Page 18: Repairing The Flange Surface
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. Bosch Rexroth AG, control block SB24/34, RE 66170-10-R/2019-05-15... -
Page 19: Repairing The Shuttle Valve
Check the distance dimension 0.5 mm from the flange surface of the control block segment to the upper edge of the inserted shuttle valve. Insert a new O-ring into port Y. NOTICE! The shuttle valve must remain freely moveable within the O-ring RE 66170-10-R/2019-05-15, control block SB24/34, Bosch Rexroth AG... -
Page 20: Repairing The Spring Pre-Tensioned Shuttle Valve
Push the compression spring in the shuttle valve bore down to the bore ground while simultaneously turning it counter-clockwise. Die compression spring is held at the bore ground by its form and tension. Bosch Rexroth AG, control block SB24/34, RE 66170-10-R/2019-05-15... - Page 21 Check the distance dimension 0.5 mm from the flange surface of the control block segment to the upper edge of the inserted shuttle valve. Insert a new O-ring into port Y. NOTICE! The shuttle valve must remain freely moveable within the O-ring RE 66170-10-R/2019-05-15, control block SB24/34, Bosch Rexroth AG...
- Page 22 22/24 Repairing the flange surface Bosch Rexroth AG, control block SB24/34, RE 66170-10-R/2019-05-15...
- Page 23 Repairing the flange surface 23/24 RE 66170-10-R/2019-05-15, control block SB24/34, Bosch Rexroth AG...
- Page 24 Bosch Rexroth AG Robert-Bosch-Straße 2 71701 Schwieberdingen Germany Phone +49 711 811-8481 [email protected] www.boschrexroth.com Your local contact person can be found at: www.boschrexroth.com/addresses Subject to change Printed in Germany RE 66170-10-R/2019-05-15...