GEAR-RING 7G6355 - Caterpillar

When 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 is −23 °C (−10 °F), the owner of the transmission or the operator may choose to install a Transmission Oil Heater. Heaters facilitate starting vehicles in cold climates and the heaters reduce the warm-up time needed to get a vehicle operational.
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(1) PortThe CX28 has an SAE "J1926 #16" straight thread "O" ring oil sump heater port (1) located in the transmission sump. As a rule, suppliers recommend "8 to 10 W" per quart of sump oil. Commercial heaters with and without thermostats are available in "150 W", "300 W", and "500 W" capacities that are compatible with the CX28 transmission.Sump heater 330-6557 Fluid Heater As is recommended for use with CX28 transmissions in cold environments.