Volvo EC20B XT Compact Excavator Repair Service Manual

Description

Table of Content EC20B XT Service Information

• GENERAL
  • DESCRIPTION, COMPLETE MACHINE
    • General
      • Position of components
  • TABLES, FOR DESIGNING
    • • Load capacity tables
      • Nominal lifting loads EC15B XR
      • Reach of the working attachment EC15B
      • Warning sign – Open engine hood only with engine stopped
      • Warning sign – Safety distance from the movement area
      • Warning sign – Safety distance from the work area
  • SPECIFICATIONS
    • • Fuels, lubricants and filling capacities (litres)
      • Strength class 8.8 Metric coarse and fine threads
      • Strength class 10.9 Metric coarse and fine threads
      • UNC-threads, coarse pitch
      • Volvo standard tightening torques
  • STANDARD TIME

• STANDARD PARTS, SERVICE
  • LUBRICANT; FUEL; OTHER FLUID
    • • Recommended lubricants
  • SERVICE
    • Maintenance
      • Condition test
        • Creeping of hydraulic cylinders
        • Deviation when travelling straight ahead
        • Measuring conditions
        • Measuring the play of the slewing bearing
        • Track travel speed
      • Maintenance instructions
    • Emergency measures
      • Jump starting
        • Starting the engine with jump wires

• ENGINE WITH MOUNTING AND EQUIPMENT
  • • General, engine installation and its function
      • Installing the engine
      • Performance characteristics (measuring values forł oneł hour with fan)
  • ENGINE
    • Cylinder head
      • Checking the compression pressure
    • Valve mechanism
      • Adjusting the valves
  • LUBRICATING SYSTEM
    • General, common info about 221 – 224
      • Lubrication system, description
      • Lubrication system, specification
    • Oil filter; filter housing
      • Removing and installing the pressure relief valve
      • Removing the oil filter
  • FUEL SYSTEM
    • General (common info about 233 – 238)
      • Bleeding the fuel system
      • Checking and adjusting the injection nozzles
      • Schematic, fuel system
    • Fuel pump; filter; strainer
      • Fuel feed pump
        • Disassembling the fuel pump
        • Fuel injection timing
      • Filter; strainer
        • Changing the fuel filter
  • COOLING SYSTEM
    • General, common info about 261 – 269
      • Technical data
    • Radiator, mounting and connections included
      • Radiator; heat exchanger
        • Removing the radiator
    • Coolant pump; thermostat
      • Coolant pump
        • Removing the coolant pump
      • Thermostat
        • Removing the thermostat housing

• ELEC. SYSTEM; WARNING SYSTEM; INFORMATION SYSTEM; INSTRUMENTS
  • • Comprehensive info, electrical system
  • BATTERY; ENERGY STORAGE SYSTEM; MOUNTING PARTS
    • General, common info about 311 – 313
  • ALTERNATOR; CHARGING; ELECTRIC MOTOR; ELECTRIC DRIVES
    • General, common info about 321 – 322
    • Alternator inclusive drive
    • Charging; converter
  • STARTING SYSTEM
    • General, common info about 331 – 334
    • Starter motor inclusive solenoid
      • Starter relay
    • Electric air pre-heater, excluding element
  • LIGHTING
    • General, common info about 351 – 356
    • Lighting, extra, including working lighting
  • OTHER ELECTRICAL EQUIPMENT
    • General, common info about 361 – 367
    • Audible warning from horn; mounting
  • CABLE; FUSE; RELAY
    • Cable; battery disconnector
    • Electrical distribution box; fuse box; junction box
  • INSTRUMENT; SENSOR; WARNING AND INFORMATION SYSTEM
    • General, common info about 383 – 387
    • Sender, monitoring system
    • Warning/information unit, display unit

• POWER TRANSMISSION
  • • General, common info about 410 – 436
      • General notes to be observe when working on power transmission assemblies
  • HYDROSTATIC DRIVE
    • General, common info about 441 – 443
      • Hydraulic motor 1 Ţ€“ travel system
      • Mechanical transmission Ţ€“ track gearbox
    • Hydraulic motor incl. operating system.
      • Design of travel motor
      • Brake valve (counter balance valve)
      • Disassembling the travel motor
      • Dismantling the travel gear
      • Hydraulic motor Ţ€“ slewing of superstructure
      • Hydraulic motor 1, travel gear
      • Removing the gear motor
    • Centre passage; lines

• BRAKE
  • • Comprehensive info about brakes

• STEERING
  • • Comprehensive info, steering
      • Steering system, description

• FRAME; SPRINGS; DAMPING; AXLE SUSPENSION; WHEEL/TRACK UNIT
  • • Comprehensive info about frame and track unit/wheels
      • Frame and crawler unit
  • FRAME
    • Frame, excavator
      • Undercarriage (crawler machine)
        • Assembling the cylinder for adjustable track width
        • Removing the cylinder for adjustable track width
      • Revolving frame
        • Removing the superstructure
  • WHEELS; TRACKS; TYRE; HUB; DRUM
    • Crawler unit
      • Front idler, incl. fork
        • Removing the guide sprocket
      • Sprocket
        • Removing the track drive
      • Steel track
        • Adjusting the track sagging
        • Removing the crawler tracks
      • Top rollers; skid rails
        • Removing the sliding bar
      • Bottom rollers
        • Removing the track roller

• MACHINERY HOUSE; CAB; EXTERIOR TRIM PARTS ANYWHERE
  • • Comprehensive info, machinery house and cab
  • CAB, NAKED; CANOPY
    • • Cabin (closed)
      • Roll over protection structure

• HYDRAULIC SYSTEM; DIGGING/ HANDLING/ GRADING EQUIPM.; MISC. EQUIP.
  • • • Adjusting the pressure and checking for leaks
      • General notes to be observe when working on the hydraulic system
      • Test and adjustment values for EC15B
      • Test and adjustment values for EC20B
  • WORKING HYDRAULICS; SERVO HYDRAULICS
    • General, common info about 911 – 917
      • Hydraulic diagram EC15B XR
    • Tank; line; oil cooling; filter; breather; filling pump
      • Tank
        • Changing the hydraulic oil
        • Checking the hydraulic oil level
      • Oil cooling system
        • Cleaning the oil cooler
        • Removing the oil cooler
      • Filters
        • Changing the hydraulic oil filter
    • Working hydraulics
      • Directional valve; control valve
        • Assignment of elements
        • Hydraulic circuit for dozer blade and adjustable track width
        • Hydraulic circuit for slewing gear and offset
        • Hydraulic circuit for dozer blade
        • Return flow, hydraulic circuit for accessories EC15B
        • Return flow, hydraulic circuit for accessories EC20B
      • Pressure limiting valve (relief valves)
        • Checking and adjusting the pressure relief valve
        • Checking and adjusting the pilot pressure
        • Tests and adjustments of the pressure relief valves
      • Hydraulic lock; line rupture valve
        • Adjustment of secondary valves Test and adjustment procedure
        • Hose rupture valve on boom cylinder, leak test
        • Hose rupture valve on boom cylinder
        • Hose rupture valve on boom cylinder Test and adjustment procedure
        • Hose rupture valve on dipper arm cylinder, leakage test
        • Hose rupture valve on dipper cylinder
      • Electric valve, in working hydraulics
        • Balancing valve (offset cylinder)
        • Solenoid valve for hydraulic working unit
      • Block for valve assembly
        • Checking and adjusting the breaker (volumetric