MAINTENANCE PLAN 4.7.5 MAINTENANCE AFTER THE FIRST 50 HOURS OF OPERATION (Only for machines in which the synthetic biodegradable oil type HEES is used) The following maintenance operation must be carried out after the first 50 hours of operation, together with the maintenance operations to be carried out “EVERY 50 HOURS”. HYDRAULIC OIL DRAIN FILTER CHANGE For further details on the various maintenance operations, see section “EVERY 500 HOURS”. 4.7.6 MAINTENANCE EVERY 50 HOURS OF OPERATION 182 DANGER • Carry out this check with the machine parked on level ground and loader arm raised with engaged safety lock.
• Do not remove the radiator cap when the fluid is hot, since the fluid may be sprayed out of the radiator and cause burns. • Loosen the cap slowly to release the pressure before re- moving it. The radiator cap can be reached after opening the engine hood (See “3.5.1 ENGINE HOOD”). Remove the cap (1) and make sure that the fluid is very near the filling hole. IMPORTANT • If the level of the fluid in the radiator is low and the expan- sion tank is filled with coolant, check the tightness and make sure that there are no air leaks from the coupling that connects the radiator and the expansion tank. If the problem persists, contact your Komatsu Utility Dealer.
The brake reservoir (1) can be reached after opening the engine hood (See “3.5.1 ENGINE HOOD”). This is a visual check and the reservoir must be topped up with the prescribed fluid until reaching the MAX. mark (See “4.3 FU- EL, COOLANT AND LUBRICANTS”). IMPORTANT • Use new oil only. • If constant and considerable leakages are observed, it is advisable to contact an Komatsu Utility Dealer to have the system checked and the necessary repairs carried out.