2013 Volvo L70D Loader Factory Service Manual (OEM)

• Volvo Construction Equipment Service Information for the L70D wheel loader, dated April 24, 2013
• Covers the TD63KGE six-cylinder, 5.48 L turbocharged and intercooled diesel engine and HT90 hydro-mechanical transmission
• Documents the 24 V electrical system, V-ECU/I-ECU controls, CAN/J1939 and J1708/1587 data communication, working hydraulics, steering, brakes, axles, cooling, and air conditioning
• This supplied 150-page PDF includes factory specifications, diagnostic test data, component service procedures, system diagrams, maintenance intervals, and special-tool references

Component and System Documentation

The L70D is identified here as a four-wheel-drive articulated loader using two load-sensing variable hydraulic pumps connected in parallel. The engine section covers the TD63KGE direct-injection diesel in far more depth than routine maintenance data: bore is 98.43 mm, stroke 120 mm, displacement 5.48 L, and the listed compression ratio is 18.3:1. Factory engine data includes 595 Nm (439 lbf ft) gross torque at 1,000 rpm, 715 ±30 rpm low idle, 2,430 ±60 rpm high idle, 0.40 mm intake valve clearance, and 0.55 mm exhaust valve clearance.

The HT90 transmission is a four-speed forward/four-speed reverse hydro-mechanical unit with an XT 179A single-stage torque converter and 2.85:1 stall torque multiplication. Main and clutch pressure are specified at 1.30–1.46 MPa under the stated test conditions. The transmission section also ties into APS II electronic shift control, gear-selector logic, kick-down operation, gearshift solenoids, travel-speed inputs, and V-ECU control functions.

Axle identification is specific enough to separate several L70D builds before repair work begins. The manual lists AWB15 front and rear axle configurations, including standard units, a front axle with electro-hydraulically operated dog-clutch differential lock, and front/rear limited-slip variants. Product numbers shown include 23848, 23849, 23850, 23867, and 23865, depending on configuration. That distinction matters when ordering internal axle parts or selecting the correct repair procedure.

Hydraulic, Steering, Brake, and Fluid Data

Working-hydraulic capacity is listed at 104 L (27.46 US gal) total, with approximately 65 L specified for an oil change. The service data goes beyond capacity figures. Lift-function shock-valve pressure is 40 ±0.8 MPa, forward tilt 27.5 ±0.8 MPa, rear tilt 30 ±0.8 MPa, and third/fourth hydraulic functions 21 ±0.8 MPa. Boom Suspension System data includes a 12.0 MPa setting pressure and accumulator precharge limits of 2.0 to 6.0 MPa.

The hydrostatic steering system uses a variable-displacement nine-cylinder axial-piston pump and an OSPB 400 LS closed-center steering valve. Maximum steering pressure at low idle is 21.0 ±0.5 MPa, while the steering shock valves are specified at 28.0 ±0.5 MPa.

Brake coverage identifies dual-circuit hydraulic wet-disc service brakes and gives operating, accumulator, charging, cut-in, cut-out, and circuit-pressure values. Electronic brake-pressure monitoring and the built-in brake-test function are also described through the control-system tables.

Fluid and maintenance data includes a 40 L cooling system, 190 L fuel tank, 27 L transmission capacity, and 24 L per axle including hub reductions. Factory intervals shown in the PDF include 500-hour engine-oil changes, 1,000-hour front/rear axle oil changes, 2,000-hour transmission oil changes, and a 4,000-hour hydraulic-oil interval under the stated operating conditions. Air-conditioning specifications identify R134a, 1.9 ±0.1 kg, along with system-pressure reference ranges.

Factory Repair Procedures and Diagnostic Tools

The repair content covers work an owner or independent shop would commonly send out when factory data is unavailable. Procedures include:

• engine removal and installation; compression testing; valve adjustment; and front crankshaft-seal replacement
• fuel-system bleeding, idle-speed adjustment, injection-angle checking/adjustment, and engine stall-speed testing
• hydraulically driven cooling-fan removal and installation, plus maximum-pressure and fan-speed testing
• engine, axle, and hydraulic oil service, along with associated filter work and inspection points
• electronic diagnosis through the service display, including APS II shifting, hydraulic-fan control, brake monitoring, Boom Suspension System operation, differential lock, engine protection, and sensor inputs

Special-tool references include the 999 3721 service display unit, 999 6643 extractor and 999 8009 adapter used for compression testing, plus 999 3590 and 999 3950 tools used in engine timing and crankshaft-related service operations.

Several diagrams show the actual diagnostic depth of the factory manual rather than just component locations. Examples include Wiring Diagram 3 for engine control/start functions, the hydraulically driven cooling-fan circuit with V-ECU control and MA202 valve logic, the Communication with data buses diagram, the Principle illustration with ECUs, and the APS II mode-selector and automatic-shift condition charts.

Three service details are especially useful during major repair work. The front crankshaft-seal procedure warns against damaging the sealing-ring seat during removal. The high-pressure injector delivery pipes are prestressed and can break if they are bent or reshaped. During engine removal, the hydraulic transmission must also be supported correctly because improper jacking can deform the transmission sump.

For heavy repair work, the manual calls for locking the articulated frame joint, relieving or controlling hydraulic pressure where specified, and using proper lifting support for major assemblies. Air-conditioning connections also require care because the system is pressurized and contains refrigerant.

Coverage and Machine Identification

The supplied PDF does not state a serial-number applicability range. Instead, Volvo provides machine and component identification points for the Product Identification Number, engine model/serial information, transmission identification, and front and rear axle component numbers. Buyers should compare those plates with their machine before relying on configuration-specific procedures.