Engine; Main Frame; Controls; Drum Water Spray System - Volvo DD29 Operator's Manual

ENGINE

All Models have the following features:
• Electric starting, belt driven alternator and battery are standard.
• A dry type, two-stage air cleaner system provides clean air to the engine. A dust
discharging evacuator valve is provided on the air cleaner.
• Engine RPM is controlled by the throttle lever located on the pedestal. The engine is
shutdown by either turning the ignition switch OFF or, in an emergency, by pressing
the emergency stop switch.
DD-29 / DD-31HF / DD-38HF machines use water-cooled, heavy-duty, industrial diesel
engines with 44 hp (32.8 kW) @ 2450 RPM.

MAIN FRAME

The machine consists of a front and rear frame which are connected by the swivel joint. The
front frame includes an engine with drive pump and the hydraulic tank. The rear frame includes
the seat and control console, water tank system, and fuel tank.

CONTROLS

All of the controls are positioned for operator convenience. The control panel contains the
following standard controls and indicators: drum selector switch, hourmeter, emergency stop
pushbutton, horn button, check engine light, brake test switch, and park brake switch with
indicator light. In addition to the standard controls, there are controls for three options:
pressurized water spray, driving lights, and beacon. All controls have ISO symbols indicating
their functions.
Hand rails, skid-resistant decking, and toe plates promote safety.
Refer to Section 3 of this manual for a complete description of the controls and indicator lights.

DRUM WATER SPRAY SYSTEM

A pressurized water spray system is standard. A knob located on the pedestal controls the
amount of water to the drums. The system consists of a separate pump, spray bars, and hand-
serviceable nozzles. The system can be operated in automatic mode, manual mode, or turned
OFF when water spray is not required. The flow control permits added productivity over
competitive models by allowing the operator to adjust and conserve water sprayed on the
drums, thus, avoiding costly down time.
6 DD-29/31HF/38HF Vibratory Asphalt Compactors