Terex 2566C, 2766C, 3066C Articulated Dumptruck Service & Repair Manual

• Official Terex Equipment Limited publication SM 991 Rev 2 (May 1998) covering 1994–1998 Terex 2566C, 2766C, and 3066C Articulated Dumptrucks equipped with ZF Powershift and Automatic transmissions.
• Features 46 exploded-view component diagrams and 12 technical torque specification tables for powertrain and chassis maintenance.
• Serves as the standardized reference for all C-series dump trucks, detailing specific updates for the heavy-duty 3066C model with the 6WG 260 transmission.

Chassis and Powertrain Documentation

This factory reference thoroughly outlines the structural data required to maintain the articulated chassis. It covers main frame beams, hood and cowl mounting, fender systems, alongside articulation and oscillation pivot assemblies. Technicians will find specific structural parameters for pivot maintenance, including crucial straightening and welding guidelines. Electrical and steering systems are documented in detail. You can efficiently trace hoist and brake systems using the specialized hydraulic circuit schematics. Because testing these components often exposes mechanics to high-pressure hydraulics, the documentation heavily emphasizes safe handling procedures to prevent fluid injection injuries during inspections. Experiencing driveshaft or articulation point issues? The manual provides precise diagnostic charts to help isolate noise and vibration sources, speeding up the identification of component wear.

Engine and Transmission Technical Data

Essential fluid capacities for engine cooling, fuel, and lubrication systems are clearly mapped out. The publication lists exact torque requirements for securing engine mounting brackets and transmission housing hardware. Inside the engine section, you will find comprehensive maintenance schedules for the Cummins 6CTA8.3-C and MTA11-C300 powerplants. These schedules cover critical intervals for oil and filter changes, belt tension adjustments, and standardized cold or hot engine check procedures. Transmission data is equally robust. It provides strict operational thresholds for the ZF 6WG series, detailing clutch pack solenoid mapping, pressure testing schedules, and turbine speed sensor reference values. When handling internal transmission components, the text highlights necessary precautions regarding fluoro-elastomer seals to avoid hazardous material exposure and skin damage.