Overview
The Volvo L70D Wheel Loader Service Repair Manual provides organized technical coverage for locating service information during maintenance and repairs. The contents bring together power transmission, braking equipment, steering components, and working and servo hydraulics.
Specific service subjects include fuel injection timing references, valve adjustment, differential-lock controls, hydraulic transmission controls, and lifting-frame and link-arm assemblies.
Table of Contents
Volvo L70D Manual
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01. General
- Description, Complete Machine — Product identification plates
- Specifications — Capacities, (litres)
- Specifications — Section 2 Engine
- Specifications — Section 3 Electrical system
- Specifications — Section 4 Power transmission
- Specifications — Section 5 Brakes
- Specifications — Section 6 Steering system
- Specifications — Section 8 Cab, interior fittings and machine superstructure
- Specifications — Section 9 Hydraulic system
- Specifications — Tightening torques
- Specifications — VOLVO standard tightening torques
- Specifications — Weights, (approx.)
- Transport Instruction.; Storage Instruction; Operating Instruction — Transporting the machine
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02. Standard Parts, Service
- Lubricant; Fuel; Other Fluid — Recommended lubricants
- Service — General, common info about 171 – 179 — Cleanliness in hydraulic systems
- Service — General, common info about 171 – 179 — Electric welding
- Service — General, common info about 171 – 179 — Repairing hydraulic system
- Service — General, common info about 171 – 179 — Service interval
- Service — General, common info about 171 – 179 — Starting with booster batteries
- Service — Maintenance — Axles, oil change
- Service — Maintenance — Engine, changing oil and filter
- Service — Maintenance — Hydraulic system, oil change
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03. Engine with Mounting and Equipment
- General, engine installation and its function — Specifications, general
- General, engine installation and its function — Tightening torques
- Engine — General, common info about 211 – 218 — Compression test
- Engine — Valve mechanism specifications
- Engine — Valve mechanism — Valves, adjusting
- Engine — Crank shaft; connecting rod; vibration damper; fly wheel
- Fuel System — Fuel pump; filter; strainer — Fuel feed pump specifications
- Fuel System — Fuel pump; filter; strainer — Fuel system, bleeding
- Fuel System — Injection pump; regulator; pump companion — Checking stalling speed
- Fuel System — Injection pump; regulator; pump companion — Idle speed, checking and adjusting
- Fuel System — Injection pump; regulator; pump companion — Injection angle, checking and adjusting (with injection timing tool 998 7057)
- Fuel System — Injection pump; regulator; pump companion — Injection pump specifications
- Fuel System — Injector; delivery pipe — Injector specifications
- Inlet System; Exhaust System — Turbo charger — Turbocharger, description
- Inlet System; Exhaust System — Air cleaner with connections; air pre-heater — Air cleaner, description
- Inlet System; Exhaust System — Air cleaner with connections; air pre-heater — Specifications, air cleaner
- Cooling System — General, common info about 261 – 269 — Specifications, capacities
- Cooling System — General, common info about 261 – 269 — Specifications, general
- Cooling System — Fan; fan shroud; fan coupling — Hydraulically driven cooling fan, checking and adjusting max. pressure
- Cooling System — Fan; fan shroud; fan coupling — Hydraulically driven cooling fan, checking and adjusting speed
- Cooling System — Fan; fan shroud; fan coupling — Hydraulically driven cooling fan, description
- Engine Control — Stop control — Stop solenoid, setting
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04. 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
- Starting System — General, common info about 331 – 334
- Starting System — Electric air pre-heater, excluding element
- Lighting — General, common info about 351 – 356
- Cable; Fuse; Relay — General, common info about 371 – 379 — Wiring diagram 8. Rotating beacon, direction indicators, brake lights
- Cable; Fuse; Relay — General, common info about 371 – 379 — Wiring diagram 23. Boom Suspension System (BSS), hydraulic oil temperature
- Cable; Fuse; Relay — General, common info about 371 – 379 — Wiring diagram 32. Mechanical parking brake with rider truck safety norms
- Cable; Fuse; Relay — Electrical distribution box; fuse box; junction box
- Instrument; Sensor; Warning and Information System — General, common info about 383 – 387
- Instrument; Sensor; Warning and Information System — Warning/information unit, display unit
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05. Power Transmission
- General, common info about 410 – 436 — Aps Ii
- General, common info about 410 – 436 — Troubleshooting tips
- Transmission, Hydraulic Control — Hydraulic transmission HT90 (8-speed model)
- Transmission, hydraulic control — Transmission oil pressure, checking (all)
- Front Axle; Rear Axle — General, common info about 461 – 468 — Differential carrier assembly
- Front Axle; Rear Axle — General, common info about 461 – 468 — Differential lock AWB15
- Front Axle; Rear Axle — General, common info about 461 – 468 — Planetary gear, hub
- Front Axle; Rear Axle — Front axle, installing
- Front Axle; Rear Axle — Front axle, removing
- Front Axle; Rear Axle — Rear axle 1
- Front Axle; Rear Axle — Differential lock, with control — Differential lock, adjusting
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06. Brake
- Comprehensive info about brakes — Functional description
- Wheel Brake — General, common info about 511 – 519
- Wheel Brake — Front wheel brake (wet brake) — Brake discs, front wheel brakes, checking wear
- Wheel Brake — Rear wheel brake, axle 1, wet brake — Brake discs, rear wheel brakes, changing
- Wheel Brake — Rear wheel brake, axle 1, wet brake — Brake discs, rear wheel brakes, checking wear
- Hydraulic Brake System — General, common info about 520 – 522 — Brake system, bleeding
- Hydraulic Brake System — General, common info about 520 – 522 — Checking function
- Hydraulic Brake System — General, common info about 520 – 522 — Pressure in circuit, checking and adjusting
- Hydraulic Brake System — General, common info about 520 – 522 — Retardation, functionality test
- Hydraulic Brake System — Brake valve — Brake pedal, adjusting angle
- Hydraulic Brake System — Brake valve — Foot brake valve, functional description
- Hydraulic Brake System — Brake accumulator; hydraulic pump — Accumulator, checking (removed)
- Hydraulic Brake System — Brake accumulator; hydraulic pump — Discarded accumulators
- Parking Brake — General, common info about 551 – 554 — Parking brake, adjusting
- Parking Brake — General, common info about 551 – 554 — Parking brake, electrical system, description
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07. Steering
- Comprehensive info, steering
- Steering — General, common info about 641 – 647 — Specifications, general
- Steering — General, common info about 641 – 647 — Specifications, tightening torques
- Steering — Hydraulic equipment — Hydraulic pump, description
- Steering — Hydraulic equipment — Steering cylinder, cutaway view
- Steering — Hydraulic equipment — Steering cylinder, reconditioning
- Steering — Hydraulic equipment — Steering pressure and holding pressure, checking and adjusting
- Steering — Hydraulic equipment — Steering valve, description
- Steering — Hydraulic equipment — Steering valve, reconditioning
- Steering — Supplementary steering — Secondary steering, description
- Lever Steering — Control lever SE603, checking input/output voltage
- Lever steering (CDC), electrical functions
- Lever steering (CDC), general description
- Lever steering (CDC), hydraulic system, description
- Lever steering, adjusting steering speed
- Lever steering, checking and adjusting control valve
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08. Frame; Springs; Damping; Axle Suspension; Wheel/track Unit
- Frame — General, common info about 711 – 718 — General description
- Frame — General, common info about 711 – 718 — Specifications, weight
- Frame Link — Bearings
- Axle Suspension — Pivot suspension — Rear axle suspension
- Axle Suspension — Pivot suspension — Rear axle suspension, checking play
- Wheels; Tracks; Tyre; Hub; Drum — General, common info about 771 – 775 — Tightening torques
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09. Machinery House; Cab; Exterior Trim Parts Anywhere
- Cab, Naked; Canopy — Cab suspension, description
- Cab, Naked; Canopy — Tightening torques
- Air Conditioning Unit — General, common info about 872 – 877 — Heating, ventilation and air conditioning unit, description
- Air Conditioning Unit — Cooling unit — Air conditioning, description
- Air Conditioning Unit — Cooling unit — AC operational reliability, functional description
- Air Conditioning Unit — Cooling unit — Air conditioning specifications
- Air Conditioning Unit — Cooling unit — Air conditioning, checking performance
- Air Conditioning Unit — Cooling unit — Electrical system, functional description
- Air Conditioning Unit — Cooling unit — Evaporator, cleaning
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10. Hydraulic System; Digging/ Handling/ Grading Equipm.; Misc. Equip.
- Working Hydraulics; Servo Hydraulics — General, common info about 911 – 917 — Central valve, description
- Working Hydraulics; Servo Hydraulics — General, common info about 911 – 917 — Control valve, description
- Working Hydraulics; Servo Hydraulics — General, common info about 911 – 917 — Hydraulic diagram, boom suspension system, single-action lifting function, differential lock
- Working Hydraulics; Servo Hydraulics — General, common info about 911 – 917 — Hydraulic diagram, working hydraulics, tilt, lifting, and float position function
- Working Hydraulics; Servo Hydraulics — General, common info about 911 – 917 — Hydraulic diagram, working hydraulics, 3rd and 4th functions, attachment lock
- Working Hydraulics; Servo Hydraulics — General, common info about 911 – 917 — Wiring diagram 150. 3rd hydraulic function with adjustable flow
- Working Hydraulics; Servo Hydraulics — General, common info about 911 – 917 — Working hydraulics, description
- Working Hydraulics; Servo Hydraulics — Working hydraulics — Shock valve, lift function, checking and adjusting
- Working Hydraulics; Servo Hydraulics — Working hydraulics — Shock valve, tilt function, checking and adjusting
- Working Hydraulics; Servo Hydraulics — Working hydraulics — Shock valves 3rd and 4th functions, checking and adjusting
- Working Hydraulics; Servo Hydraulics — Pump, working hydraulics — Hold (stand-by) pressure, checking and adjusting
- Working Hydraulics; Servo Hydraulics — Pump, working hydraulics — Working pressure, checking and adjusting
- Working Hydraulics; Servo Hydraulics — Servo hydraulic system — Servo pressure, checking and adjusting
- Working Hydraulics; Servo Hydraulics — Servo hydraulic system — Servo pressure, checking by spool in control valve
- Working Hydraulics; Servo Hydraulics — Other hydraulic equipment — Boom Suspension System (BSS400), checking function
- Working Hydraulics; Servo Hydraulics — Other hydraulic equipment — Boom Suspension System (BSS400), electrical system description
- Working Hydraulics; Servo Hydraulics — Other hydraulic equipment — Boom Suspension System (BSS400), general description
- Working Hydraulics; Servo Hydraulics — Other hydraulic equipment — Boom Suspension System (BSS400), hydraulic system description
- Working Hydraulics; Servo Hydraulics — Other hydraulic equipment — Hydraulic oil pressure in accumulators, unloading
- Working Hydraulics; Servo Hydraulics — Other hydraulic equipment — Precharging pressure in accumulators, checking and adjusting
- Working Hydraulics; Servo Hydraulics — Other hydraulic equipment — Pressure reducing valve (CT8) for Boom Suspension System, setting
- Working Hydraulics; Servo Hydraulics — Other hydraulic equipment — Specifications, general
- Unit, Load Handling — Lifting frame work with mounting and link arm system — Designations of loader unit bearing arrangements and links
Hydraulic Pressure Checks and Fault-Tracing References
For this subject, the index specifically identifies “Steering valve, reconditioning” and “Steering pressure and holding pressure, checking and adjusting”.
Use the named pressure-check entry for the test reference, rather than assuming that every pump or valve heading includes the same check.
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