. OPERATION OPERATION OPERATION OPERATION 3 - 70 3. If th ere is no coolan t in sub tank, fill the r adiator with t he coolant whose density is i ndicated in the density table of coolant in "CLEAN INSIDE OF COOLING SYSTEM (PA GE 4-30)" through water filler ( 3) at the top of r adiator and then, fill the sub tan k with the coola 4. Check that there is no oil in the coolin g water. If the re is oil in the cooling water, there is probably s om e proble engine. Please con engine inspected. 5. Afte r adding water, tighten the cap CHECK DUST INDICAT Check that the yello indicator (1) does n w display in the ot indicate 7.5 k transparent port Pa (0.076 kg/cm2 ion of dust , 1.1 PSI).
If the red line indica tes 7.5 kPa (0.076 kg/cm2, 1.1 P SI), clean or r eplace the air cl eaner element immediately. For details of the method of c leaning the ele "CHECK, CLEAN 4-24)". After checking, cle CLEANE 3. Afte indicator (1) to retu rn the yellow displa y to its origina l position.