UNIVERSAL JOINT GP 8X0307 - Caterpillar

the oil is allowed to warm-up gradually, the bearing components maintain optimum operating conditions. High speeds during a cold start-up may decrease the durability of the bearing components. During warm-up, electronic control systems on the transmission will restrict available transmission gears for certain cold oil temperature ranges. If the temperature is less than −23 °C (−10 °F), warm up the engine for approximately 20 minutes.Transmission Oil HeaterIf ambient temperature are -23° C (-10° F) the transmission owner or operator may choose to install a transmission oil heater. Heaters facilitate starting vehicles in cold climates and they reduce the warm up time needed to get a vehicle operational. The CX31 has an SAE J1926 #16 straight thread “O” ring oil sump heater port located under the converter housing. As a general rule, suppliers recommend 8 to 10 watts per quart of sump oil. Commercial heaters with and without thermostats are available in 150, 300 and 500 watt capacities that are compatible with the CX31 transmission.