MAINTENANCE INFORMATION DO NOT DROP THINGS INSIDE MACHINE When opening inspection windows or the oil filler port of the tank to carry out inspection, be careful not to drop nuts, bolts, or tools inside the machine. If such things are dropped inside the machine, it may cause damage and/or malfunction of the machine, and will lead to failure. If you drop anything inside the machine, always remove it immediately. Do not put unnecessary things in your pockets. Carry only things which are necessary for inspection. DUSTY JOBSITE When working at dusty worksites, do as follows: Inspect the air cleaner clogging monitor frequently to see if the air cleaner is clogged.
Clean the air cleaner element at a shorter interval 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. When inspecting or changing the oil, move the machine to a place that is free of dust to prevent dirt from getting into the oil. AVOID MIXING LUBRICANTS If a different brand or grade of oil has to be added, drain the old oil and replace all the oil with the new brand or grade of oil. Never mix different brand or grade of oil. LOCKING THE INSPECTION COVERS Lock inspection cover securely into position with the lock bar.
If inspection or maintenance is performed with in- spection cover not locked in position, there is a hazard that it may suddenly blown shut by the wind and cause in- jury to the worker. HYDRAULIC SYSTEM - AIR BLEEDING After repairing or replacing the hydraulic equipment or after removing the hydraulic piping, it is necessary to bleed the air from the circuit. For details, see "4.9.5.a CHANGE OIL IN HYDRAULIC TANK, CLEAN STRAINER". HYDRAULIC HOSE INSTALLATION When removing parts at locations where there are O-rings or gasket seals, clean the mounting surface, and re- place with new parts. When doing this, be careful not to forget to assemble the O-rings and gaskets.
When installing the hoses, do not twist or bend them into loops with a small radius. This will cause damage to the hose and drastically reduce its service life. 157