Overview
The Volvo EC120D AG Excavator Service Repair Manual provides organized technical coverage for locating service information during maintenance and repairs. The indexed systems include engine systems, power transmission, working and servo hydraulics, and electrical and instrument systems.
The contents also identify the superstructure swing motor, engine lubrication, crankshaft and connecting-rod components, travel-drive pumps, and track rollers.
Table of Contents
Volvo EC120D AG Manual
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01. General
- Specifications
- Standard Time
- Miscellaneous — Service instruction; safety instruction
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02. Standard Parts, Service
- Lubricant; Fuel; Other Fluid
- Service — General, common info about 171 – 179
- Service — Maintenance — Condition test
- Safety equipment, without own function group
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03. Engine with Mounting and Equipment
- General, engine installation and its function
- Engine — General, common info about 211 – 218
- Engine — Cylinder block with crankcase ventilation
- Engine — Valve mechanism
- Engine — Crank shaft; connecting rod; vibration damper; fly wheel
- Lubricating System — General, common info about 221 – 224
- Lubricating System — Oil pump; line
- Lubricating System — Oil cooler
- Fuel System — General (common info about 233 – 238)
- Fuel System — Fuel tank; fuel filling pump
- Fuel System — Injector; delivery pipe
- Inlet System; Exhaust System — General, common info about 251 – 258
- Inlet System; Exhaust System — Turbo charger
- Inlet System; Exhaust System — Charge air cooler with connections
- Cooling System — General, common info about 261 – 269
- Cooling System — Radiator, mounting and connections included
- Cooling System — Coolant pump; thermostat
- Engine Control — General, common info about 272 – 277
- Miscellaneous — EGR (Exhaust Gas Recirculation)
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04. Elec. System; Warning System; Information System; Instruments
- Comprehensive info, electrical system
- Software documents, complete vehicle
- Faulttracing
- Battery; Energy Storage System; Mounting Parts — Battery
- Alternator; Charging; Electric Motor; Electric Drives — General, common info about 321 – 322
- Alternator; Charging; Electric Motor; Electric Drives — Alternator inclusive drive
- Starting System — General, common info about 331 – 334
- Starting System — Starter motor inclusive solenoid
- Starting System — Starter lock
- Lighting — General, common info about 351 – 356
- Lighting, extra, including working lighting
- Other Electrical Equipment — Audible warning from horn; mounting — Horn
- Other Electrical Equipment — Audible warning from horn; mounting — Audible back-up warning; audible motion warning
- Other Electrical Equipment — Audible warning from horn; mounting — Back-up warning; travel warning
- Other Electrical Equipment — Cleaner — Windscreen wiper
- Other Electrical Equipment — Switch; connector — Switch
- Other Electrical Equipment — Automatic control/blocking function, lacking a function group of its own
- Other Electrical Equipment — Electronic standard components
- Cable; Fuse; Relay — General, common info about 371 – 379
- Cable; Fuse; Relay — Cable; battery disconnector
- Cable; Fuse; Relay — Electrical distribution box; fuse box; junction box — Electrical distribution box
- Cable; Fuse; Relay — Electrical distribution box; fuse box; junction box — Fuse
- Cable; Fuse; Relay — Electrical distribution box; fuse box; junction box — Relay
- Cable; Fuse; Relay — Electrical distribution box; fuse box; junction box — Circuit breaker
- Instrument; Sensor; Warning and Information System — General, common info about 383 – 387
- Instrument; Sensor; Warning and Information System — Speedometer; trip meter; hour counter
- Instrument; Sensor; Warning and Information System — Sender, monitoring system
- Instrument; Sensor; Warning and Information System — Warning/information unit, display unit
- Radio, with tape or CD player; voltage divider — Radio, with tape or CD player
- Radio, with tape or CD player; voltage divider — Voltage divider
- Radio equipment for communication
- Telematics systems
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05. Power Transmission
- General, common info about 410 – 436
- Gearbox — Track gearbox, crawler machine
- Gearbox — Swing gearbox + swing pinion shaft
- Hydrostatic Drive — Hydraulic motor incl. operating system. — Hydraulic motor 1, traveling
- Hydrostatic Drive — Hydraulic motor incl. operating system. — Hydraulic motor, swing of superstructure
- Hydrostatic Drive — Hydraulic pump incl.coupling, travelling incl. operating system
- Hydrostatic Drive — Centre passage; lines — Centre passage
- Swing system upper part
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06. Frame; Springs; Damping; Axle Suspension; Wheel/track Unit
- Comprehensive info about frame and track unit/wheels
- Frame — General, common info about 711 – 718
- Frame — Protection; belly plate; bumper
- Frame — Counterweight
- Frame, excavator — Undercarriage (crawler machine)
- Wheels; Tracks; Tyre; Hub; Drum — Crawler unit — Front idler, incl. fork
- Wheels; Tracks; Tyre; Hub; Drum — Crawler unit — Sprocket
- Wheels; Tracks; Tyre; Hub; Drum — Crawler unit — Steel track
- Wheels; Tracks; Tyre; Hub; Drum — Crawler unit — Top rollers; skid rails
- Wheels; Tracks; Tyre; Hub; Drum — Crawler unit — Bottom rollers
- Wheels; Tracks; Tyre; Hub; Drum — Crawler unit — Track support, chain guide (derailing protection)
- Wheels; Tracks; Tyre; Hub; Drum — Crawler unit — Spring package; adjusting cylinder
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07. Machinery House; Cab; Exterior Trim Parts Anywhere
- Comprehensive info, machinery house and cab
- Cab, Naked; Canopy — Cab mounting
- DOORS; HATCH; COVER PLATE, (all) — Door, complete with catch, hinges (no glass)
- Trim Part, Outside; Glass; Sealing Moulding — Glass; sealing moulding
- Cab Interior/upholstery — Driver’s seat, complete; instructor’s seat
- PROTECTIVE EQUIPMENT, not specified in a special group — Protecting frame; protecting equipment for cab
- Air Conditioning Unit — General, common info about 872 – 877
- Air Conditioning Unit — Air distribution incl. air intake with filter
- Air Conditioning Unit — Heating unit
- Air Conditioning Unit — Cooling unit
- Interior Equipment — Instrument panel/console; control panel/console/-pedestal
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08. Hydraulic System; Digging/ Handling/ Grading Equipm.; Misc. Equip.
- Working Hydraulics; Servo Hydraulics — General, common info about 911 – 917
- Working Hydraulics; Servo Hydraulics — Tank; line; oil cooling; filter; breather; filling pump — Tank
- Working Hydraulics; Servo Hydraulics — Tank; line; oil cooling; filter; breather; filling pump — Line; fitting; connecting block; retainer
- Working Hydraulics; Servo Hydraulics — Tank; line; oil cooling; filter; breather; filling pump — Oil cooling system
- Working Hydraulics; Servo Hydraulics — Working hydraulics — Directional valve; control valve
- Working Hydraulics; Servo Hydraulics — Working hydraulics — Hydraulic lock; line rupture valve
- Working Hydraulics; Servo Hydraulics — Pump, working hydraulics
- Working Hydraulics; Servo Hydraulics — Servo hydraulic system — Pump
- Working Hydraulics; Servo Hydraulics — Servo hydraulic system — Pressure accumulator
- Working Hydraulics; Servo Hydraulics — Servo hydraulic system — Control pressure valve, except brake valve
- Working Hydraulics; Servo Hydraulics — Servo hydraulic system — Solenoid valve, on/off function
- Working Hydraulics; Servo Hydraulics — Other hydraulic equipment — Hydraulics mounted on machine for attachments
- Mechanical Equipment/attachment — Attachment bracket, mechanical and hydraulic Quickfit
- Mechanical Equipment/attachment — Bucket, incl. possible cylinders with tubes and hoses
- Unit, Digging — General, common info about 971 – 975
- Unit, Digging — Boom with links — Boom
- Unit, Digging — Boom with links — Cylinder, boom lifting
- Unit, Digging — Dipper arm with links — Dipper arm
- Unit, Digging — Dipper arm with links — Links; link system
- Unit, Digging — Dipper arm with links — Cylinder, dipper arm
- Unit, Digging — Dipper arm with links — Cylinder, bucket
Servo Hydraulic Circuit, Working Hydraulic Circuit and Directional Control Valve
The associated entries are “Servo hydraulic system” and “Working hydraulics”.
Travel-drive pumps and working-hydraulics pumps have separate entries. Match the identified pump and circuit to the relevant branch of the contents.
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