17. GUIDES TO MAINTENANCE
Obey all safety precautions in this manual and Product Graphics on the machine when performing 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 hourmeter:
+ Check the service hourmeter 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 Book list as replacement parts.
Komatsu genuine oils:
+ Use Komatsu genuine oils and grease. Choose oils and grease with proper viscosities specified for ambient
temperature.
+ For details of the fluid to use, see 20. USE OF FUEL, COOLANT AND LUBRICANTS ACCORDING TO
AMBIENT TEMPERATURE.
Clean oil and grease:
+ Use clean oil and grease. Also, 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 the 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 coolant and oil:
+ Draining hot oils and coolant 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, = 20 to 40°C (68 to 104°F)
before draining it.
Checking for foreign materials in drained oil:
+ After oil is changed and/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 control lever to avoid someone who is not
aware of the circumstances from starting the engine.
Welding instructions:
+ Turn off the engine starting switch and master switch.
+ Do not apply more than 200 V continuously.
+ Connect the ground cable within 1 m (3.28 ft) from the area to be welded.
+ Avoid seals or bearings from being between the area to be welded and the position of grounding point.
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