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Bosch Rexroth SM 12 Repair Manual

Mobile control block, 6-way version sandwich plate design
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Mobile control block, 6-way version
sandwich plate design
SM 12
Repair Manual
RE 64122-S/06.2011
English

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Summary of Contents for Bosch Rexroth SM 12

  • Page 1 Mobile control block, 6-way version RE 64122-S/06.2011 sandwich plate design English SM 12 Repair Manual...
  • 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.

  • Page 3: Table Of Contents

    RE 64122-S/06.2011 | Type SM 12 Bosch Rexroth AG 3/30 Contents 1 Introduction ..................4 2 Safety instructions ................5 2.1 General safety instructions ............5 2.2 Safety instructions in this document ..........5 3 Troubleshooting ................. 6 4 Fundamental rules ................8 4.1 General information concerning control block connection .....

  • Page 4: Introduction

    In its attempts to maintain a high-quality product, BOSCH REXROTH reserves the right to make design or technical modifications at any time and without prior notification.

  • Page 5: Safety Instructions

    RE 64122-S/06.2011 | Type SM 12 Bosch Rexroth AG 5/30 Safety instructions Safety instructions General safety instructions See service instruction manual RE64025. Safety instructions in this document In this manual, there are safety instructions before the steps whenever there is a danger of personal injury or damage to the equipment. The measures described to avoid these hazards must be observed.

  • Page 6: Troubleshooting

    6/30 Bosch Rexroth AG Type SM 12 | RE 64122-S/06.2011 Troubleshooting Troubleshooting CAUTION BEFORE STARTING ANY PROCEDURES OF TROUBLE SHOOTING OR REMOVING THE CONTROL BLOCK, INSPECT THE GLOBAL MACHINE’S HYDRAULIC SYSTEM TO ELIMINATE ALL POSSIBLE MALFUNCTIONS NOT RELATED TO THE SM 12 CONTROL BLOCK.
  • Page 7 RE 64122-S/06.2011 | Type SM 12 Bosch Rexroth AG 7/30 Troubleshooting Tableau 4: Visual defects Malfunction Probable cause Additional Checks Remedy Spool leaking oil Spool seals defective Replace spool seals (see § 7.2) Check the rubber boot condition Oil leakage at pressure...

  • Page 8: Fundamental Rules

    8/30 Bosch Rexroth AG Type SM 12 | RE 64122-S/06.2011 Fundamental rules Fundamental rules General information concerning control block connection When removing the block, all openings must be plugged immediately to prevent any contamination of the hydraulic system. When replacing the block, remove the plastic plugs from the openings and lines just before making the connections.

  • Page 9: Removal / Installation Of The Sm 12 Control Block

    RE 64122-S/06.2011 | Type SM 12 Bosch Rexroth AG 9/30 Removal / installation of the SM 12 control block Removal of the SM 12 control block Install a vacuum pump on the tank to limit oil leakage when connections are removed.

  • Page 10: Inlet And Outlet Elements Repair Procedure

    10/30 Bosch Rexroth AG Type SM 12 | RE 64122-S/06.2011 Inlet and outlet elements repair procedure Inlet and outlet elements repair procedure Primary pressure relief valve replacement The control block does not need to be removed from the machine to perform this operation.

  • Page 11: Removal Of The Outlet Element Type K Cartridge

    RE 64122-S/06.2011 | Type SM 12 Bosch Rexroth AG 11/30 Inlet and outlet elements repair procedure Removal of the outlet element type K cartridge The control block does not need to be removed from the machine to perform this operation.

  • Page 12: Removal Of The Outlet Element Type Kw Adjustable Flow Control

    12/30 Bosch Rexroth AG Type SM 12 | RE 64122-S/06.2011 Inlet and outlet elements repair procedure Removal of the outlet element type KW adjustable flow control The control block does not need to be removed from the machine to perform this operation.

  • Page 13: Removal Of The Outlet Element Type Kv Check Valve

    RE 64122-S/06.2011 | Type SM 12 Bosch Rexroth AG 13/30 Inlet and outlet elements repair procedure Removal of the outlet element type KV check valve The control block does not need to be removed from the machine to perform this operation.

  • Page 14: Removal Of The Externe Pilot Oil Supply Block X

    14/30 Bosch Rexroth AG Type SM 12 | RE 64122-S/06.2011 Inlet and outlet elements repair procedure Removal of the Externe pilot oil supply block X The control block does not need to be removed from the machine to perform this operation.

  • Page 15: Removal Of The Interne Pilot Oil Supply Block Y

    RE 64122-S/06.2011 | Type SM 12 Bosch Rexroth AG 15/30 Inlet and outlet elements repair procedure Removal of the Interne pilot oil supply block Y The control block does not need to be removed from the machine to perform this operation.

  • Page 16: Distribution Element Repair Procedure

    16/30 Bosch Rexroth AG Type SM 12 | RE 64122-S/06.2011 Distribution element repair procedure Distribution element repair procedure Secondary valves replacement The control block does not need to be removed from the machine to perform this operation. DANGER Oil pressure Machine off: place all of the machine’s actuators connected to the control block in...
  • Page 17 RE 64122-S/06.2011 | Type SM 12 Bosch Rexroth AG 17/30 Distribution element repair procedure Plug Q On the distribution element in question, unscrew the plug (6 mm socket wrench). Replace the 3 seals or replace the plug. Reassembly : torque : 70 ± 10% N.m.

  • Page 18: Removal Of A Spool Return Via A Spring Operation A2 Z1 Or A2 G1

    18/30 Bosch Rexroth AG Type SM 12 | RE 64122-S/06.2011 Distribution element repair procedure Removal of a spool return via a spring operation A2 Z1 or A2 G1 The control block does not need to be removed from the machine to ��...
  • Page 19 RE 64122-S/06.2011 | Type SM 12 Bosch Rexroth AG 19/30 Distribution element repair procedure Cover side A2 On the distribution element in question, unscrew the 2 mounting screws on the cover (L = 10 mm) (4 mm socket wrench). Remove the cover.
  • Page 20 20/30 Bosch Rexroth AG Type SM 12 | RE 64122-S/06.2011 Distribution element repair procedure Reassembly: replace the o-ring and the wiper ring, CAUTION SEALS MUST BE FITTED ON THE END OF THE SPOOL SO THAT THEY ARE NOT DAMAGED ON THE SPOOL GROOVES AND THEIR TIGHTNESS PROPERTY DOES NOT DETERIORATE.

  • Page 21: Spool Stroke Measurement (3 Position)

    RE 64122-S/06.2011 | Type SM 12 Bosch Rexroth AG 21/30 Distribution element repair procedure Tongue replacement (if necessary) Beforehand, heat the spool to 200° C in an oven or, failing that, with a heat gun. Do not use fire. CAUTION DO NOT USE A WELDING TORCH TO HEAT THE TONGUE AS SPOOL DEFORMATION MAY RESULT.

  • Page 22: Removal Of A Mechanical Detent System B2, C2, D2 Or E2

    22/30 Bosch Rexroth AG Type SM 12 | RE 64122-S/06.2011 Distribution element repair procedure emoval of a mechanical detent system B2, C2, D2 or E2 The control block does not need to be removed from the machine to perform this operation.
  • Page 23 RE 64122-S/06.2011 | Type SM 12 Bosch Rexroth AG 23/30 Distribution element repair procedure ������������ ������ ����� ������� ������ ������� ������ �� ����������� ������������������ �� �� ���������� ������ Illustration 1: Exploded view of mechanical detent system position 1, 2 or 1 and 2 ������������...
  • Page 24 24/30 Bosch Rexroth AG Type SM 12 | RE 64122-S/06.2011 Distribution element repair procedure Remove the balls and the spring. Remove the balls and the spring. Reassembly: introduce the spring into the adapter, place the 3 balls into the radial holes of the adapter and hold them with...

  • Page 25: Removal Of A Manual Operation M1

    RE 64122-S/06.2011 | Type SM 12 Bosch Rexroth AG 25/30 Distribution element repair procedure Removal of a manual operation M1 The control block does not need to be removed from the machine to perform this operation. DANGER Oil pressure Machine off: place all of the machine’s actuators connected to the control block in...

  • Page 26: Removal Of A Manual Operation With Encapsulated Lever R5

    26/30 Bosch Rexroth AG Type SM 12 | RE 64122-S/06.2011 Distribution element repair procedure Removal of a manual operation with encapsulated lever R5 The control block does not need to be removed from the machine to perform this operation. DANGER...

  • Page 27: Removal Of A Hydraulic Operation H200 Or H400

    RE 64122-S/06.2011 | Type SM 12 Bosch Rexroth AG 27/30 Distribution element repair procedure Removal of a hydraulic operation H200 or H400 The control block does not need to be removed from the machine to perform this operation. DANGER Oil pressure Machine off: place all of the machine’s actuators connected to the control block in...

  • Page 28: Removal Of A Electro-Hydraulic Operation W200

    28/30 Bosch Rexroth AG Type SM 12 | RE 64122-S/06.2011 Distribution element repair procedure Removal of a electro-hydraulic operation W200 The control block does not need to be removed from the machine to perform this operation. DANGER Oil pressure Machine off: place all of the machine’s actuators connected to the control block in...

  • Page 29: Removal Of A Check-Valve

    RE 64122-S/06.2011 | Type SM 12 Bosch Rexroth AG 29/30 Distribution element repair procedure Removal of a check-valve The control block does not need to be removed from the machine to perform this operation. DANGER Oil pressure Machine off: place all of the machine’s actuators connected to the control block in neutral position, release stored pressure by operating all the spools.

  • Page 30: Control Block Disassembly / Assembly

    30/30 Bosch Rexroth AG Type SM 12 | RE 64122-S/06.2011 Control block Disassembly / Assembly Control block Disassembly / Assembly Preliminary operations Remove the control block from the machine (see § 5). Remove the 4 nuts (13 mm ring wrench).
  • Page 31 RE 64122-S/06.2011 | Type SM 12 Bosch Rexroth AG Notes...
  • Page 32 Bosch Rexroth AG Type SM 12 | RE 64122-S/06.2011 Notes...
  • Page 33 RE 64122-S/06.2011 | Type SM 12 Bosch Rexroth AG Notes Notes...
  • Page 34 Bosch Rexroth AG Bosch Rexroth DSI S.A.S. Hydraulics BP 101 Zum Eisengießer 1 91, bd Irène joliot-Curie 97816 Lohr am Main, Germany 69634 Vénissieux Cedex, France Tél. +49 (0) 93 52 / 18-0 Telefon +33 (0) 4 78 78 52 52 Fax.

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