2012 Ford F550 Cab Diesel Supplement 3rd Printing - Page 50

2012 Ford F550 Cab Manual

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Maintenance and Specifications Engine and secondary cooling system refill procedure The following procedure should be used when refilling the engine or secondary cooling systems after it has been drained or become extremely low. 1. Before you remove the cap, turn the engine off and let it cool. 2. When the engine is cool, wrap a thick cloth around the cap. Slowly turn cap counterclockwise until pressure begins to release. 3. Step back while the pressure releases. 4. When you are sure that all the pressure has been released, use the cloth to turn it counterclockwise and remove the cap. 5. Slowly add prediluted engine coolant to the coolant reservoir until the coolant level is within the COLD FILL RANGE as listed on the reservoir. 6. Reinstall the pressure relief cap. 7. Start and run the engine at 2,000 rpm for 2 minutes. 8. Shut engine off, and remove the pressure relief cap as previously outlined. 9. If required, add prediluted engine coolant to the coolant reservoir until the coolant level is within the COLD FILL RANGE as listed on the reservoir. 10. Engine cooling system: Repeat Step 5 until the coolant level has stabilized (is no longer dropping after each step) AND the upper radiator hose at the radiator is warm to the touch (indicating that the engine thermostat is open and coolant is flowing through the radiator). Secondary cooling system: Repeat Step 5 until the coolant level has stabilized (is no longer dropping after each step) AND the lower passenger side of the secondary radiator is warm to the touch (indicating secondary thermostat is open and coolant is flowing through the entire system). 11. Reinstall the pressure relief cap. Shut the engine off and let it cool. 12. Check the coolant level in the reservoir before you drive your vehicle the next few times (with the engine cool). 13. If necessary, add prediluted engine coolant to the coolant reservoir until the coolant level is within the COLD FILL RANGE as listed on the reservoir. After any coolant has been added, check the coolant concentration. See Engine and secondary cooling system coolant earlier in the chapter for more information. 50 2012 Diesel (67l) Supplement, 3rd Printing USA (fus)

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Engine and secondary cooling system refill procedure
The following procedure should be used when refilling the engine or
secondary cooling systems after it has been drained or become extremely
low.
1. Before you remove the cap, turn the engine off and let it cool.
2. When the engine is cool, wrap a thick cloth around the cap. Slowly
turn cap counterclockwise until pressure begins to release.
3. Step back while the pressure releases.
4. When you are sure that all the pressure has been released, use the
cloth to turn it counterclockwise and remove the cap.
5. Slowly add prediluted engine coolant to the coolant reservoir until the
coolant level is within the COLD FILL RANGE as listed on the reservoir.
6. Reinstall the pressure relief cap.
7. Start and run the engine at 2,000 rpm for 2 minutes.
8. Shut engine off, and remove the pressure relief cap as previously
outlined.
9. If required, add prediluted engine coolant to the coolant reservoir until
the coolant level is within the COLD FILL RANGE as listed on the reservoir.
10. Engine cooling system: Repeat Step 5 until the coolant level has
stabilized (is no longer dropping after each step) AND the upper radiator
hose at the radiator is warm to the touch (indicating that the engine
thermostat is open and coolant is flowing through the radiator).
Secondary cooling system: Repeat Step 5 until the coolant level has
stabilized (is no longer dropping after each step) AND the lower
passenger side of the secondary radiator is warm to the touch
(indicating secondary thermostat is open and coolant is flowing
through the entire system).
11. Reinstall the pressure relief cap. Shut the engine off and let it cool.
12. Check the coolant level in the reservoir before you drive your vehicle
the next few times (with the engine cool).
13. If necessary, add prediluted engine coolant to the coolant reservoir
until the coolant level is within the COLD FILL RANGE as listed on the
reservoir. After any coolant has been added, check the coolant
concentration. See
Engine and secondary cooling system coolant
earlier in the chapter for more information.
Maintenance and Specifications
50
2012 Diesel
(67l)
Supplement, 3rd Printing
USA
(fus)