Related Manuals for Bosch Rexroth SB23
Summary of Contents for Bosch Rexroth SB23
- Page 1 Control valves SB23, SB33 Hitch control valves EHR23, EHR33 Control block assembly Replaces: 66130-10-R 66130-11-R 66132-10-R 66132-11-R Repair instructions 66134-10-R RE 66133-10-R/05.2013 English...
- Page 2 © This document, as well as the data, specifications and other information set forth in it, are the exclusive property of Bosch Rexroth AG. It may not be reproduced or given to third parties without its consent.
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Page 3: Table Of Contents
5.3.2 Control valve and hitch control valve assembly 5.3.3 End plate assembly Flange surface sealing element repair 5.4.1 Sealing elements for LS control blocks Shuttle valve repair Coupling flange seals repair RE 66133-10-R/05.2013, SB23, SB33, EHR23, EHR33, Bosch Rexroth AG... -
Page 4: About This Documentation
Control block SB23, SB33 66133-01-R Repair instructions Contains the necessary basic information for assembly and repair Related documentation is available in the instructions specified above and also from www.boschrexroth.com/mobile-hydraulics-catalog, if necessary. Bosch Rexroth AG, SB23, SB33, EHR23, EHR33, RE 66133-10-R/05.2013... -
Page 5: Safety Instructions
3 General repair instructions General repair instructions are contained in the basic documentation 66133-01-R. 4 About this product Information on the identification and product description is contained in the basic documentation 66133-01-R. RE 66133-10-R/05.2013, SB23, SB33, EHR23, EHR33, Bosch Rexroth AG... -
Page 6: Assembly Description
Loosen the nuts at the tie rods by turning them counterclockwise and screw them off. Similarly, for valves with five tie rods the nuts Pull off the end plate via the tie rods. Bosch Rexroth AG, SB23, SB33, EHR23, EHR33, RE 66133-10-R/05.2013... - Page 7 Subplate disassembly Loosen the tie rods by turning them counterclockwise and screw them out of the subplate. Similarly, for valves with five tie rods the tie rods Fig. 3: Subplate disassembly RE 66133-10-R/05.2013, SB23, SB33, EHR23, EHR33, Bosch Rexroth AG...
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Page 8: Control Block Assembly
). (In case of an Open Center control block the spacer is threaded only on tie rod Bosch Rexroth AG, SB23, SB33, EHR23, EHR33, RE 66133-10-R/05.2013... -
Page 9: Subplate Assembly
Push the EHR valve over the tie rods according to the specified order, with the opposite flange O-ring side pointing at the subplate. Fig. 5: EHR valve assembly RE 66133-10-R/05.2013, SB23, SB33, EHR23, EHR33, Bosch Rexroth AG... -
Page 10: End Plate Assembly
Tighten the nuts applying a torque wrench by turning the clockwise. Tightening order with five tie rods, see Fig. 9). Tightening torque M = 25.5 +2.5 Fig. 7: End plate assembly Bosch Rexroth AG, SB23, SB33, EHR23, EHR33, RE 66133-10-R/05.2013... -
Page 11: Flange Surface Sealing Element Repair
Table 4. Table 4: Sealing element disassembly/assembly for LS control blocks Port Disassembly Assembly Pump P LS Y Drain oil R Pilot oil Feed oil X Drain oil Rx RE 66133-10-R/05.2013, SB23, SB33, EHR23, EHR33, Bosch Rexroth AG... - Page 12 Versions with Rx and X ports that have a counterbore for an O-ring and do not have a continuous bore through the valve housing, must also be provided with an O-ring. The O-ring to be used depends on the bore diameter. Bosch Rexroth AG, SB23, SB33, EHR23, EHR33, RE 66133-10-R/05.2013...
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Page 13: Shuttle Valve Repair
Check the distance of 0.5 mm from the flange surface of the control block segment to the upper edge of the inserted shuttle valve. Table 5: Shuttle valve disassembly/assembly Control block segment Disassembly Assembly EHR23-EM2 SB23-M SB23-EHS EHR33 SB33 RE 66133-10-R/05.2013, SB23, SB33, EHR23, EHR33, Bosch Rexroth AG... -
Page 14: Coupling Flange Seals Repair
Assemble the coupling flange according to the vehicle manufacturer’s instructions. Tighten the mounting screws clockwise applying a torque according to Table 7. Table 7: Tightening torques mounting screws Screw Oiled Fig. 13: Assembly of the customer-specific coupling flange Bosch Rexroth AG, SB23, SB33, EHR23, EHR33, RE 66133-10-R/05.2013... - Page 15 For valves with additional functions with access to the coupling flange surface it must remain accessible even by the use of suitable couplings. Fig. 14: Coupling flange for valves with additional function RE 66133-10-R/05.2013, SB23, SB33, EHR23, EHR33, Bosch Rexroth AG...
- Page 16 Bosch Rexroth AG Mobile Applications Glockeraustraße 4 89275 Elchingen Germany Phone +49 7308 82-0 +49 7308 7274 info.brm@boschrexroth.de www.boschrexroth.com/brm Bosch Rexroth AG Mobile Applications Robert-Bosch-Straße 2 71701 Schwieberdingen Germany Phone +49 711-811-84 81 +49 711-811-28 11 service.ma.schwieberdingen@boschrexroth.de www.boschrexroth.com/brm Subject to change without notice Printed in Germany RE 66133-10-R/05.2013...