3. INTRODUCTION 3.1 INTENDED USE This Komatsu BULLDOZER is designed to be used mainly for the following work: l Dozing l Smoothing l Cutting into hard or frozen ground or ditching. l Felling trees, removing stumps See the section “12.10 WORK POSSIBLE USING BULLDOZER” for further details. 3.2 FEATURES HIGH PRODUCTIVITY l Powerful S6D125(6D125 for D65E) engine and large-capacity blade provide high productivity. l Low drive and long truck undercarriages are extraordinarily tough and offer excellent grad- ing ability and stability. HIGH MANEUVERABILITY l Wrist control type single-lever for steering/directional change makes operations smooth and easy.
l Wrist control type single-lever for blade control with PPC (Proportional Pressure Control) and CLSS (Closed-center Load Sensing System) assures precise and responsive operation. l Hydrostatic steering system (HSS) provides extra-smooth, speedy and powerful steering. (D65EX-12 and D65PX-12) OPERATOR COMFORT l Rubber-mounted power-train and valves substantially reduce noise and vibration. l Pressurized cab with wide view and oil damper suspension offers a comfortable operating environment. l Simple hull frame and monocoque track frames with pivot shafts assure greater reliability. EASY MAINTENANCE AND HIGH DURABILITY l Unique modular design facilitates the removal of power-train components.
l Larger-sized undercarriage components extend life. 3.3 BREAKING IN THE MACHINE Your Komatsu machine has been thoroughly adjusted and tested before shipment. However, operating the machine under severe conditions at the beginning can adversely affect the performance and shorten the machine life. Be sure to break in the machine for the initial 100 hours (as indicated by the service meter.) During breaking in: l Idle the engine for 5 minutes after starting it up. l Avoid operation with heavy loads or at high speeds. l Avoid sudden starts, sudden acceleration, sudden steering and sudden stops except in cases of emergency.
The precautions given in this manual for operating, maintenance, and safety procedures are only those that apply when this product is used for the specified purpose. If the machine is used for a purpose that is not listed in this manual, Komatsu cannot bear any responsibility for safety. All consideration of safety in such operations is the responsibility of the user. Operations that are prohibited in this manual must never be carried out under any circum- stances. o-3