3. INTRODUCTION 3.1 INTENDED USE This machine is intended mainly for the following operations. Digging operations Leveling operations Pushing operations Loading operations For details of the operating procedure, see “12.10 WORK POSSIBLE USING WHEEL LOADER”. 3.2 FEATURES 1. Easy to operate work equipment By using the kick-down switch installed to the knob on the boom control lever, it is possible to shift down from 2nd to 1st, thereby providing speedy digging and loading operations. The powerful digging force and drawbar pull make it easy to dig and scoop up loads. The large dumping clearance and reach make it easy to load dump trucks.
The excellent acceleration and production per unit of fuel make this a very economical machine. Installation of bucket corner teeth and wear plates between the teeth give the bucket a large resistance to wear. 2. Easy to operate machine The electrical transmission control provides light gear shifting, enabling finger control. The length of both the directional and speed levers can be adjusted individually. The PPC valve (proportional pressure type) provides good response when raising the boom and little operating force is required. A wrist rest is provided by the control levers to improve the ease of control. 3.
Operating comfort The sealed pressurized cab with air conditioner make pleasant operations possible. A fabric seat is used for the operator’s seat to give the operator a good ride. A low-vibration cab and viscous mount are employed. 4. High levels of safety Safety is ensured by the good visibility from the cab, the wide area around the operator’s seat, steps for getting on and off the machine, and the walk-through floor at the rear of the cab. The rear access step offers increased safety when the operator gets on and off the machine with something in his hands.
With the handrail and nonskid treatment on the top of the hood, the operator can check the radiator water level and add water to it more safely. Checks before starting and checks for abnormalities during operation can be carried out using the machine monitor. Maintenance free wet-type multiple disc brakes are used. 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:
Idle the engine for 5 minutes after starting it up. Avoid operation with heavy loads or at high speeds. 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 circumstances. 0-5