129
MAINTENANCE NOTES
4.2.1.3
FUEL
4.2.2 NOTES REGARDING THE HYDRAULIC SYSTEM
•
Use only permanent ethylene glycol-based antifreeze with the addition of anticorrosion and antifoam products.
The antifreeze-water ratio must be 50% (50% antifreeze and 50% water).
•
The use of permanent antifreeze requires only the routine change. It is not necessary to wash the cooling circuit.
•
Use drinkable water and in any case soft water.
•
Do not use corrosion inhibitors containing soluble oil, since they damage the rubber couplings.
•
The required standards for permanent antifreeze are the following: SAE-J1034 and FEDERAL STANDARD O-A-
548D.
In case of doubt regarding the compliance of the antifreeze used with the standards, contact your Komatsu Utility
Dealer and ask for precise information.
•
Always use fuel suitable for the engine. Other fuels with different specifications may damage the engine or re-
duce its power.
•
Always refuel at the end of the work day.
•
When refuelling, make sure that there is no water on the fuel drum cover and take care not to draw the conden-
sate from the drum bottom.
•
If fuel runs out, or if the fuel filter has been replaced, it is necessary to bleed the pipes.
•
Be extremely careful when performing maintenance operations on the hydraulic system, since soon after work
the oil is very hot.
The circuit is pressurized not only during work, but also at the end of work.
•
The maintenance operations required for the hydraulic system are the following:
1 - daily check of the oil level in the tank;
2 - periodical change of the oil filter;
3 - periodical change of the oil.
•
Always bleed the circuit after changing the oil filter or the oil.
•
When a component is removed from the circuit, check the gaskets and O-rings and change them if they are
damaged.
•
When a cylinder or a component of the hydraulic circuit is removed, after reassembly bleed the circuit by pro-
ceeding as follows:
1 - start the engine and let it idle;
2 - make all the cylinders perform 4-5 movements, stopping them at approx. 100 mm from the end of their stroke;
3 - slowly make all the cylinders reach the end of their stroke for 3-4 times.
Summary of Contents for PC110R-1
Page 2: ......
Page 19: ...17 SAFETY AND ACCIDENT PREVENTION...
Page 51: ...49 THE MACHINE AND ITS OPERATIONS...
Page 126: ...124 PAGE INTENTIONALLY LEFT BLANK...
Page 127: ...125 MAINTENANCE...
Page 190: ...188 PAGE INTENTIONALLY LEFT BLANK...
Page 191: ...189 TECHNICAL SPECIFICATIONS...
Page 198: ...196 PAGE INTENTIONALLY LEFT BLANK...
Page 199: ...197 AUTHORISED OPTIONAL EQUIPMENT...
