RT115 Tier 2 - CONTROLS 21 c00ic043a.ai c00ic042a.eps Check front of hydraulic fluid cooler for debris. Coolant Temperature Indicator This indicator lights and alarm sounds if cooling system coolant overheats. Check cooling system for low fluid level, dirty radiator, or leaks. Hydraulic Fluid Temperature Indicator This indicator lights and alarm sounds if hydraulic fluid overheats. Turn off engine and let cool. Check hydraulic fluid level. Turn off engine and let cool. CONTROL CONSOLE DESCRIPTIONS If temperature is high: If temperature is high: p