. OPERATION EXPLANATION OF COMPONENTS 3 - 14 MAINTENANCE INTERVAL MONITOR This m onitor ( 2) lights up yellow 30 hour s before the next periodic maintenance after th e previous periodic maintenance work was carrie d out, an d turns red to war n the operator tha t the set t ime has passe This return For s to the details standar of the m d working ethod of c screen. hecking t see "MAINTENANCE MOD 3-28)". If it is desired t o chang e settings for t he maintenance i nterval, have your K omatsu distributor chang e th e settings.