2013 Volvo L90C / L120C Wheel Loader Service Manual (P/N 8111858)

• Covers essential systems for the 2013 Volvo L90C and L120C wheel loaders, including engine, transmission, electrical, and cooling.
• Official OEM factory publication (Date: April 30, 2013). Part number 8111858, detailing the TD63KBE and TD73KDE engine series.
• Includes 56 technical diagrams, 16 specification tables, and 14 maintenance charts for fast referencing.
• Details the hydrostatic steering system, wet type disc brakes, Electronic Control Unit (ECU), differential lock, and Boom Suspension System.
• Explains the Automatic Power Shift (APS II), Comfort Drive Control (CDC), propeller shafts, and air conditioning unit.
• Minimizes heavy equipment downtime by providing exact factory procedures for in-house overhauls, saving your shop from costly dealer outsourcing.

Component and System Documentation

This official 754-page PDF manual organizes critical service data into logical function groups. It starts with a detailed product identification guide covering the engine, cab, transmission, and drive axles. From there, you will find extensive documentation on the hydro-mechanical power shift systems used in both loaders. To help you avoid expensive workshop visits, the guide provides step-by-step instructions for tasks like complete transmission reconditioning, hydraulic control valve overhauls, steering cylinder repacking, and full engine rebuilds. Need engine specs? The manual breaks down power plant removal, valve clearance adjustments, and injection timing verification. It also details the electrical layout—featuring full wiring diagrams, gear-shifting diagrams, timing principle drawings, fluid flow charts, electrical circuit charts, and exploded component views—plus complete cooling system teardowns like pump reconditioning and radiator service. Safety first: Always consult a certified technician and review all factory safety protocols before servicing heavy machinery.

Specification and Reference Values

Accurate technical data is the backbone of precision maintenance and any reliable repair, and this manual delivers exact factory reference values. For example, intake valve clearance is clearly listed at 0.40 mm. Need to torque the head? The guide maps out the multi-stage cylinder head bolt sequence, with final-stage values specified at 220 ±22 Nm. For the L120C, injection pump timing is set at 9° B.T.D.C. When executing a fix on these specific models, technicians should be aware of critical operational traps. For instance, if the machine is transported facing forward on a trailer, the exhaust pipe opening must be securely capped; otherwise, the turbocharger will windmill without lubrication and rapidly destroy its bearings. Furthermore, during injection timing adjustments, the pump coupling must always be rotated strictly against the direction of rotation to eliminate timing gear clearance and prevent severe performance issues. You will also find comprehensive charts detailing standard tightening torques for both metric and UNC fasteners, lubrication grades, and coolant capacities. These factory reference tables ensure component longevity and streamline your troubleshooting and diagnostic process. Learn more about how factory workshop documentation is structured to facilitate effective machine maintenance.