Komatsu Bulldozers D65EX,PX-12 : General Maintenance

Do not carry out any inspection and maintenance operation that is not given in this manual.

Perform maintenance work on hard, flat ground.

Check service meter

• Check the service meter reading every day to see if the time has come for any necessary maintenance to be carried out.

Komatsu genuine replacement parts:

• Use Komatsu genuine parts specified in the parts list as replacement parts.

Komatsu genuine oils:

• Use Komatsu genuine oils and grease.

• Choose oils and grease with proper viscosities specified for ambient temperature.

Always use clean washer fluid

• Use automobile window washer fluid and be careful not to let any dirt get into it

Clean oil and grease

• Use clean oil and grease

• Keep containers of the oil and grease clean

• Keep foreign materials away from oil and grease

Keeping the machine clean

• Always keep the machine clean. This makes is easier to find parts causing problems. Keep in particular grease fittings, breathers and oil level gauges clean and avoid foreign matters from getting in them.

Be careful of hot water and oil

• Draining hot oils and coolants and removing their filters immediately after the engine stops are hazardous.

• Allow the engine to cool.

• If the oil has to be drained when it is cold, warm up the oil to a suitable temperature (approx. 20 - 40°C) before draining it.

Checking foreign materials in drained oil

• After oil is changed or filters are replaced, check the oil and filters for metallic particles and foreign materials.

• If large quantities of metallic particles or foreign materials are found, consult your Komatsu distributor.

Fuel strainer

• If your machine is equipped with a fuel strainer, do not remove it while fueling.

Oil change

• Check or change oils in the places where dust is scarce to keep foreign materials away from oils.

Warning tag

• Attach the warning tag to the starting switch or other appropriate one who is not aware of the circumstances from starting the engine

Obey precautions:

• During the operation, always obey the precautions on the safety label stuck to the machine

Welding instructions

• Turn off the engine starting switch

• Do not apply more than 200 V continuously

• Connect grounding the cable within 1 m from the area to be welded

• Avoid seals or bearings from being between the area to be welded and the position of grounding point

Fire prevention

• Use nonflammable cleaner or light oil for cleaning parts.

• Keep flame or cigarette light away from light oil

Clamp faces

• When O-rings or gaskets are removed, clean the clamp faces and replace the O-rings and gaskets with new ones

• Be sure to fit O-rings and gaskets when assembling

Objects in your pockets

• Keep your pockets free of loose objects which can fall out and drop into the machinery; especially when you work on the machinery while bending over it

Checking undercarriage

• When working in rocky areas, check for damage to the undercarriage and for looseness, flaws, wear and damage in bolts and nuts

• Loosen the track tension a little when working in such areas

Cleaning machine

• Do not direct a high-pressure jet directly at the radiator

• Do not splash water over the electrical equipment

Before starting work in mud, rain, snow or at seashore,

• Check plugs and valves for tightness

• Wash the machine immediately after the work to protect components from rusting

• Lubricate components more frequently than usual.

• Be sure to lubricate work equipment pins daily if they are submerged in water

When working at dusty worksites, do as follows

• Check the air cleaner for clogging more frequently

• Clean the air cleaner at shorter intervals than specified

• Clean the radiator core frequently to avoid clogging

• Clean and replace the fuel filter frequently.

• Clean electrical components, especially the starting motor and alternator, to avoid accumulation of dust

Avoid mixing oils. Never mix oils of different brands.

If you have only oil which is a different brand from the one that is used in the machine, do not add it but replace all the oil.

Precautions when opening and closing engine side cover

• If you open the engine side cover when on the track, always do so in a standing position

• When the engine side cover is open, do not open or close the cab. Before opening or closing the cab, always close the engine side cover first