SPRING-TORQUE 9S9003 - Caterpillar

Personal injury can result from hot coolant, steam, and alkali.At operating temperature, engine coolant is hot and under pressure. The radiator and all lines to heaters or the engine contain hot coolant or steam. Any contact can cause severe burns.Remove the cooling system pressure cap only when the engine is stopped and is cool enough to touch with your bare hand. Lift the lever on the pressure cap to relieve the cooling system pressure before removing the pressure cap.Do not attempt to tighten hose connections when the coolant is hot because the hose can come off which could result in burns.Cooling System Coolant Additive contains alkali. Avoid contact with skin and eyes.
Illustration 1 g03712697
Lift the lever on the pressure cap in order to relieve the cooling system pressure. Remove the pressure cap.
Inspect the pressure cap for damage, foreign material and for deposits.
Inspect the condition of the pressure cap seal. Replace the pressure cap if damaged. If the seal is not damaged, use a 9S-8140 Pressurizing Pump to pressure test the pressure cap. The correct cap relief pressure is stamped on the radiator cap. If the pressure cap does not hold the correct pressure, install a new cap.
Install the pressure cap.