2013 Volvo A25C Articulated Hauler OEM Service & Repair Manual

This manual compiles Volvo Service Information for the 2013 A25C articulated hauler, covering 4x4 and 6x6 configurations. The service sheets are dated February 28, 2013, and organized by Volvo function group.

• Engine and fuel system: Compression checks, engine removal and installation, valve adjustment, injection-timing tests, and injector replacement.

• Cooling and fan drive: Radiator replacement, fan-motor piston-ring service, hydraulic leakage checks, and thermostat-valve testing and reconditioning.

• Transmission and dropbox: PT 1051 troubleshooting, pressure checks, control-system replacement, transmission removal, and FL652C range-control and shaft-seal service.

• Service and parking brakes: Brake-disc and pad inspection, caliper reconditioning, hydraulic bleeding, and compressed-air regulator and valve service.

• Steering and articulation: Steering-cylinder resealing, steering-valve reconditioning, joint-bearing replacement, and frame- and steering-joint clearance checks.

• Hydraulics and dump body: Pump internal-leakage and standby-pressure tests, hoist-cylinder reconditioning, dump-valve service, and load-body alignment.

• Electrical diagnosis: Serial-specific wiring diagrams, connector pin legends, Contronic display information, and charging-system and starter-motor specifications.

The procedures suit experienced heavy-equipment technicians with suitable lifting equipment, hydraulic test gauges, and the specified electrical diagnostic tools.

Engine, Fuel Injection, and Cooling Service

Engine removal and in-chassis service are included. Internal engine overhaul requires the separate Engine TD61/63, 71/73 manual referenced in the engine section.

Injector service addresses copper-sleeve cleaning and sealing-washer replacement. Fuel-system cautions explain the rupture risk from bending the preformed injection lines. Adjustments to sealed injection-pump and timing settings are reserved for Volvo- or Bosch-authorized workshops.

Cooling coverage extends to the liquid-cooled intercooler and hydraulic fan drive. Fan-motor exploded views support the piston-ring work, while separate checks distinguish motor operation, internal leakage, and thermostat-valve function.

PT 1051 Diagnosis and FL652C Driveline Service

The transmission troubleshooting material links Contronic error codes with electrical checks at connectors X1/A1 and X6/A4. Comparing these checks helps distinguish harness faults from transmission components before replacement. Service display unit 999 3721 and the required measuring equipment are identified.

The PT1051 cutaway drawing and transmission-with-retarder hydraulic diagrams explain the clutch, brake, and oil-circuit arrangements. Load-sensor adjustment receives specific attention because an incorrect setting can damage the transmission.

FL652C work covers high/low-range adjustment, differential-lock engagement, external seals, and removal and installation. Further specifications are referred to a separate dropbox service manual. Axle coverage includes hub-seal work and differential-lock checks, with additional axle specifications referred to a separate service manual.

Brakes, Articulation, and Hoist Hydraulics

Compressed-air diagrams distinguish A25C brake-system versions and the 4x4 turn-around-wheel arrangement. A25CTS 6x6 is also represented in the compressed-air diagram section.

The joint procedures distinguish the frame joint's metallic bearing from the steering joint's spherical bearings. Separate checks address clearance, shims, seals, and bearing installation.

Hydraulic descriptions distinguish engine-driven pumps from the ground-driven secondary-steering pump. The hydraulic diagrams for A25C 6x6 and A25C 4x4 with turn-around wheels show the corresponding steering and dumping circuits. Load-body work includes hoist-cylinder piston-rod seals and dump-bearing replacement.

Follow the manual's load-body support, articulation-locking, and pressure-isolation precautions when working around the raised body or pressurized systems.

Labor Planning and Workshop Tool Drawings

Volvo's Time Guide lists operation numbers and labor allowances for job estimates and bay scheduling. Component-specific torque tables, fluid capacities, lubricant recommendations, and change intervals provide the accompanying workshop references.

E-tool fabrication drawings include transmission lifting device E1057C and load-body support E1645. Differential-lock checks identify adjusting tool E1750. Identification-plate guidance supports matching the machine and components before selecting the relevant service section.

A Preview of Engine, Capacity, and Starter Data

These examples are a small selection of the engine, fluid-capacity, and electrical specifications in the manual.

The TD73KCE data lists a 17.7:1 compression ratio. The valve-adjustment procedure specifies 0.40 mm intake clearance with the engine cold. The front engine-mount diagram assigns 185 Nm (136 lb-ft) to its central fastener.

Capacity tables list 40 liters for the cooling system and 220 liters for the complete hydraulic system. Electrical specifications give starter-motor output as 5.5 kW (7.4 hp).

PDF Access and Diagram Readability

Search, navigation, and small labels: PDF text search and embedded bookmarks are not available, and some internal cross-references are unresolved. Small wiring labels require zooming; some labels in the reduced hydraulic diagrams remain poorly legible when enlarged.

Supplied as one printable English PDF with 1,180 pages. The total includes the Time Guide, workshop tool drawings, and diagram pages.