Liebherr R900B / R904, R914 / R924, R934 / R944, R934B / R944B Hydraulic Excavators Service Manual

This manual has been prepared to provide you with technical information on the design and construction of the various components which made up the Liebherr excavator.
Service manual contains brief and precise, descriptions, guidelines and drawings of adjustment procedures as well as hydraulic and electrical schematics, and graphically depicted diagrams and sectionals to help you with any repairs, which might become necessary on our hydraulic excavators.
This service manual allows to identify and resolve problems and inaccuracies.
Service manual comes in PDF format. We recommend to use Adobe PDF Reader, to be sure all images / graphics will display correctly. If necessary, you can print pages, pictures, charts, or the entire manual completely.

Models covered:
R900B / R904,
R914 / R924,
R934 / R944,
R934B / R944B.

Contents:

• 1 General Information
  • Chart / Coming into Effect of Modifications
  • Safety Information
  • Conversion Factors
  • Tightening Torques
  • Lubrication
• 2 Special Tools
  • Special Tools for maintenance and repair of hydraulic excavators
  • Special Tools for maintenance and adjustments of Liebherr - Diesel - Engines
  • Special Tools for maintenance and adjustments of Deutz - Diesel - Engines
  • Special Tools for maintenance, repair and adjustments of the Hydraulic System
  • Special Tools for maintenance and repair of electrical connectors
  • Special Tools for maintenance and repair of Gears
  • Special Tools for maintenance and repair of Axles
  • Piston Wrench
  • Slotted nut Wrench
  • Mounting device for brake housing on swing gear Liebherr
  • Mounting device for brake housing on travel gear Liebherr
  • Installation tool for slipring seals
• 3 Technical Data / Maintenance Guidelines
  • Technical Data
  • Maintenance Guidelines
  • Lubrication Chart
• 4 Engine
  • Technical Data - Diesel engine Deutz
  • Technical Data - Diesel engine Liebherr
• 5 Coupling / Splitterbox
  • Pump Splitterbox
• 6 Hydraulic System
  • Adjustment check list
  • General Description and Construction / System
  • Pressure adjustments
  • Hyudraulic diagrams
• 7 Hydraulic Components
  • Hydraulic Pump Assembly / Technical Data
  • Variable Displacement Pump LPVD / Construction and Function
  • Pump LPVD with Regulating valve LR-SD-DA
  • Pump LPVD with Regulating valve LR-LS
  • Variable Displacement Pump LPV / Construction and Function
  • Pump LPV with Regulating valve LR-SD / Pump regulation and Adjustment
  • Variable displacement pump A 10 VO-ED
  • Swing Pump A 4 V - DWD
  • Swing Pump A 4 V - TC
  • Hydraulic Motors - Chart
  • Hydraulic fixed Displacement Motor FMF (Liebherr)
  • Hydraulic fixed Displacement Motor HMF (Linde)
  • Hydraulic fixed Displacement Motor FMF with discharge
  • Hydraulic variable Displacement Motor HMF (for Travel)
  • Hydraulic Cylinder / Construction, Function, Repair
  • Hydraulic Cylinder / Extension and Retraction times
  • Hydraulic Cylinder - Chart
  • Regulating and Servo oil Unit
  • Servo Control with Joystick
  • Servo Control with Foot Pedal
  • 2-way Servo Control for added hydraulic installation
  • Function of the Load Sensing Control Valves
  • Support block for Load Sensing Control Valves
  • Load Sensing Control Valves
  • Control Valves Blocks / Leak Oil Check
  • Control Valves Blocks / Charts and Technical Data
  • Control Valve Block / Technical Data - Description
  • 7-way Control Valve Block NW 22 / Technical Data - Description
  • 1 and 2 way Control Valve Block NW 22 for add. Equipment
  • 1-way Rotary Connection
  • 5-way Rotary Connection
  • Brake Valve for Hydraulic Travel Motor
• 8 Electrical System
  • Components of the Electrical System
  • References of Wires
  • Monitoring Display
  • Control Unit
  • Electrical Diagrams - Basic Equipment
  • Electrical Diagrams - Optional Equipments
• 9 Swing Gear
  • Swing Gear "SAT"
  • Swing Brake
• 10 Swing Ring
  • Swing Ring
• 11 Travel Gear / Two Speed Gear Box
  • Travel Gear - Chart
  • Travel Gear Liebherr "FAT"
  • Travel Brake
  • Slipring Seal
• 12 Track Components / Axles
  • Technical Data
  • Wear of track components
  • Wear limits of track components B60 - D6C
  • Wear limits of track components D7 - D6HD - B6
  • Removal and installation of track components
  • Slipring seal
  • Idler
  • Tension unit
  • Track roller
  • Carrier roller B60 Berco
  • Carrier roller D7 Intertrac
• 16 Special Attachments / Additional Hydraulic Installations
  • Load check valve - "Oil control"
  • Load check valve - "Beringer"
  • Load check valve - "Rexroth"
  • Overload Warning Device
  • Quick change adapter
  • Flow limitation
  • Hydraulic hammers
  • Hydraulic installation kit
• 17 Cab Heater / Air Conditioning System
  • Supplementary heater "D5 WS"
  • Air Conditioning System "KONVEKTA"
  • Regulation Solenoid Valve for Cab Heater
• 18 Undercarriagr / Uppercarriage Attachments