. MAINTENANCE GUIDES TO MAINTENANCE 4 - 3 DUSTY WORKSITES: s follows: avoid clogging. uently. ally the starting motor and alternator, to avoid accumulation of dust. When working at dusty worksites, do a Clean the radiator core frequently to Clean and replace the fuel filter freq Clean electrical components, especi ally the starting motor and alternator, to avoid accumulation o f dust. When inspecting or changing the oil, move the machine to a place that is free of dus t to prevent di rt from getting into the oil. AVOID MIXING OIL: If a different brand or grade of oil has to be added, drain the old oil and replace all the oil with the new b rand or grade of oil.
Never mix different brand or grad e of oil. LOCKING INSPECTION COVERS: Lock inspection cover securely into p osition with the lock bar. If inspection or maintenance is performed with with inspection cover not locked in position, there is a danger that it may be suddenly blow shut by the wi nd and cause injury to the worker. BLEEDING AIR FROM HYDRAULIC CIRCUIT : en repaired or replaced and if the hydraulic hoses, pipes, etc. have been If t he hydraulic oil equipments have be een disconnected, it is necessary to bleed air from the circuit. See "CHANGE OIL IN HYDRAULIC TAN K, REPLACE HYDRAULIC FILTER ELEMENT (PAG E 4-59)". PRECAUTIONS WHEN INSTALLING HYDRA ULIC HOSES:
here there are O-rings or gasket seals, clean the mounting surface, and rget to assemble the O-rings and gaskets. When removing parts at locations w replace with new parts. When doing this, be careful not to fo When installing the hoses, do not tw ist them or bend them sharply. If they are installed so, t heir s ervice life will be shortened extremely and they m ay be damaged. CHECKS AFTER INSPECTION AND MAINTE NANCE: If y ou forget to perform the checks after inspection and maintenance, unexpected problems may occur , and this may lead to serious injury or property dama ge. Always do the following: stopped) ance points been forgotten? nce items been performed correctly?
Checks after operation (with engine Have any inspection and mainten Have all inspection and maintena Have any tools or parts been dro inside the machine and get caug Are there any leakage of coolant Have any inspection and mainten Have all inspection and maintena Have any tools or parts been dro pped inside the machine? It is particularly dangerous i f part s are dropped ht in the lever linkage mechanism. or oil? Have all nuts and bolts been tightened? Are there any leakage of coolant or oil? Have all nuts and bolts been tightened?
Check when the engine is running See "TWO WORKERS FOR MAI safety for checking when the eng Check if the inspected and maint Increase the engine speed to che See "TWO WORKERS FOR MAI NTENANCE WHEN ENGINE IS RUNNING (PAGE 2-37)" in t he sectio n on ine is running. Pay attention to safety. enance area is operating normally. ck for fuel and oil leakage. Check if the inspected and maint Increase the engine speed to che