Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD2009RV CUTAWAY 6.8 SREPAIR AND DIAGNOSISENGINE MECHANICALCOOLING SYSTEM (MECHANICAL)ENGINE COOLING SYSTEMGENERAL PROCEDURESHEATER CORE BACKFLUSHING
2009 Ford RV Cutaway 6.8 S
Heater Core Backflushing
2009 Ford RV Cutaway 6.8 SSECTION Heater Core Backflushing
SPECIAL TOOL CHART
| Flush Kit Hardware Package 164-R3658 or equivalent |
|
| Drain Kit 164-R3662 or equivalent |
- Once pressure is released, remove the pressure relief cap.
- Partially drain the cooling system. For additional information, refer to COOLING SYSTEM DRAINING, FILLING AND BLEEDING .
- Use an appropriate cooling system flusher to backflush the heater core. Use Premium Cooling System Flush VC-1 or equivalent meeting Ford specification ESR-M14P7-A.
- Fill the cooling system. For additional information, refer to COOLING SYSTEM DRAINING, FILLING AND BLEEDING .
WARNING:
Never remove the pressure relief cap while the engine is operating or when the cooling system is hot. Failure to follow these instructions can result in damage to the cooling system or engine or personal injury. To avoid having scalding hot coolant or steam blow out of the degas bottle when removing the pressure relief cap, wait until the engine has cooled, then wrap a thick cloth around the pressure relief cap and turn it slowly. Step back while the pressure is released from the cooling system. When you are sure all the pressure has been released, (still with a cloth) turn and remove the pressure relief cap.
NOTE:
Refer to the cooling system flusher operating instructions for particular vehicle hook-up.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.