. SAFETY PRECAUTIONS FOR MAINTENANCE REPAIR WELDING 2 - 31 Welding o perations m ust always b e carried ou t by a qual ified welde r and in a place equipped with proper equipment. There is a hazard of gas, fire, or e lectrocution when carr ying ou t welding, so neve r allow any unqualified personnel to carry o ut welding. REMOVING BATTERY TERMINAL When rep airing the e lectrical syst em or when carrying o ut electrica l welding, remo ve the negative (-) terminal o f the battery to prevent th e flow of curr PRECAUTIONS WHEN USING HIGH-PRESSURE GREASE TO ADJUST TRACK TEN Grease is pumpe d into the tr ack tension adjustme nt system under h igh pressu re.
If the spe cified proced ure for ma intenance is not fo llowed wh en making ad justment, g rease drai n valve (1) may fly out and ca use serious injury or da mage. When l oosening g rease drain valve (1) to l oosen trac k tension, never lo osen it mo re than one t urn. In doing so, loosen the valve slowly. Never p ut your fac e, hands, fe et, or any ot her part of your body directly in front of grease drain DO NOT DISASSEMBLE RECOIL S PRING Never atte mpt to dis assemble th e recoils spri ng assem bly. It contains a spring u nder high pressure which se rves as a shoc k absorber for the idler. If it is disassembled b y mistake, the spring wil l fly out and cause serious injury. o the work.
serious i njury. When it b ecomes ne cessary to d isassemble it, ask you r Komatsu distributor to d