RAM 3500 Truck 2WD L6-6.7L DSL Turbo (2010)
Thermostat: Service and Repair
Engine Coolant Thermostat - Removal
6.7L DIESEL
NOTE: Thermostats for the Cummins diesel, while physically interchangeable, should not be mixed and matched. For model year 2010 and
forward, the 6.7L diesel engine uses a 200° Fahrenheit thermostat. Confirm the temperature stamp on the thermostat rim prior to
removal or installation.
WARNING: Do not loosen the radiator draincock with the system hot and pressurized. Serious burns from the coolant can occur.
1. Disconnect the battery negative cables.
2. Remove the vent plug near EGR cooler.
3. Drain the cooling system until the coolant level is below the thermostat.See: Service and Repair.
4. Disconnect the exhaust gas pressure sensor electrical connector (3).
5. Remove the exhaust pressure tube (4) from the thermostat housing.
6. Remove the EGR cooler cross over tube (1).
7. Remove the radiator hose clamp and hose from the thermostat housing (1).
8. Remove the heat shield.
9. Remove the three water outlet-to-cylinder head bolts (5) and remove the water outlet connector.
10. Clean the mating surfaces of the thermostat housing (1) and clean the thermostat seat groove at the top of the thermostat housing (1).
