2019 FORD F-53 air conditioning

Vehicles driven year-round in non-extremeclimates should use prediluted coolant foroptimum cooling system and engineprotection.
Coolant Change
At specific mileage intervals, as listed inthe scheduled maintenance information,the coolant should be changed. Addprediluted coolant approved to the correctspecification. See Capacities andSpecifications (page 134).
Fail-Safe Cooling
Fail-safe cooling allows you to temporarilydrive your vehicle before any incrementalcomponent damage occurs. The fail-safedistance depends on ambienttemperature, vehicle load and terrain.
How Fail-Safe Cooling Works
If the engine begins to overheat,the coolant temperature gaugemoves toward the red zone:
A warning lamp illuminates anda message may appear in theinformation display.
If the engine reaches a presetover-temperature condition, the engineautomatically switches to alternatingcylinder operation. Each disabled cylinderacts as an air pump and cools the engine.
When this occurs, your vehicle stilloperates, however:
•Engine power is limited.
•The air conditioning system turns off.
Continued operation increases the enginetemperature, causing the engine tocompletely shut down. Your steering andbraking effort increases in this situation.
When the engine temperature cools, youcan re-start the engine. Have your vehiclechecked as soon as possible to minimizeengine damage.
When Fail-Safe Mode Is Activated
WARNING: Fail-safe mode is foruse during emergencies only. Operateyour vehicle in fail-safe mode only aslong as necessary to bring your vehicleto rest in a safe location and seekimmediate repairs. When in fail-safemode, your vehicle will have limitedpower, will not be able to maintainhigh-speed operation, and maycompletely shut down without warning,potentially losing engine power, powersteering assist, and power brake assist,which may increase the possibility of acrash resulting in serious injury.
WARNING: Do not remove thecoolant reservoir cap when the engine ison or the cooling system is hot. Wait 10minutes for the cooling system to cooldown. Cover the coolant reservoir capwith a thick cloth to prevent thepossibility of scalding and slowly removethe cap. Failure to follow this instructioncould result in personal injury.
Your vehicle has limited engine powerwhen in the fail-safe mode, drive yourvehicle with caution. Your vehicle does notmaintain high-speed operation and theengine may operate poorly.
Remember that the engine is capable ofautomatically shutting down to preventengine damage. In this situation:
1.Pull off the road as soon as safelypossible and switch the engine off.
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2.If you are a member of a roadsideassistance program, we recommendthat you contact your roadsideassistance service provider.
3.If this is not possible, wait a shortperiod for the engine to cool.
4.Check the coolant level. If the coolantlevel is at or below the minimum mark,add prediluted coolant immediately.
5.When the engine temperature cools,you can re-start the engine. Have yourvehicle checked as soon as possible tominimize engine damage.
Note:Driving your vehicle without repairincreases the chance of engine damage.
Engine Coolant TemperatureManagement (If Equipped)
WARNING: To reduce the risk ofcrash and injury, be prepared that thevehicle speed may reduce and thevehicle may not be able to acceleratewith full power until the coolanttemperature reduces.
If you tow a trailer with your vehicle, theengine may temporarily reach a highertemperature during severe operatingconditions, for example ascending a longor steep grade in high ambienttemperatures.
At this time, you may notice the coolanttemperature gauge moves toward the redzone and a message may appear in theinformation display.
You may notice a reduction in vehiclespeed caused by reduced engine power inorder to manage the engine coolanttemperature. Your vehicle may enter thismode if certain high-temperature andhigh-load conditions take place. Theamount of speed reduction depends onvehicle loading, grade and ambienttemperature. If this occurs, there is no needto pull off the road, you can continue todrive your vehicle.
The air conditioning may automaticallyturn on and off during severe operatingconditions to protect the engine fromoverheating. When the coolanttemperature decreases to the normaloperating temperature, the air conditioningturns on.
If the coolant temperature gauge movesfully into the red zone, or if the coolanttemperature warning or service enginesoon messages appear in your informationdisplay, do the following:
1.Pull off the road as soon as safelypossible and shift the transmission intopark (P).
2.Leave the engine running until thecoolant temperature gauge needlereturns to the normal position. Afterseveral minutes, if the temperaturedoes not drop, follow the remainingsteps.
3.Switch the engine off and wait for it tocool. Check the coolant level.
4.If the coolant level is at or below theminimum mark, add prediluted coolantimmediately.
5.If the coolant level is normal, restartthe engine and continue.
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ENGINE SPECIFICATIONS
6.8L EngineEngine
415 in³ (6,800 cm³)Displacement
1-6-5-10-2-7-3-8-4-9Firing order
Coil on plugIgnition system
0.039 in (1 mm) - 0.043 in (1.1 mm)Spark plug gap
9.2:1Compression ratio
Drivebelt Routing
Engines with Air Conditioning
Engines without Air Conditioning
MOTORCRAFT PARTS
Motorcraft Part numberComponent
FA-1782Air filter element
BH-31-XTBattery (F-53 stripped chassis and F-59step van ramp prep package)
BH-31-XTBattery (F-59 step van)
FL-820-SOil filter
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CAPACITIES AND SPECIFICATIONS
Capacities
WARNING: The air conditioning refrigerant system contains refrigerant underhigh pressure. Only qualified personnel should service the air conditioning refrigerantsystem. Opening the air conditioning refrigerant system can cause personal injury.
CapacityItem
7.0 qt (6.6 L)Engine oil (with oil filter)
30.6 qt (29 L)Engine coolant
Between MIN/MAX on brake fluid reservoirBrake fluid
4.1 qt (3.9 L)Rear axle lubricant(Dana M80 axle)
8.0 qt (7.6 L)Rear axle lubricant(Dana S110 axle)
7.0 qt (6.6 L)Rear axle lubricant(Dana S130 axle)
16.0 qt (15.1 L)Rear axle lubricant(Dana Spicer 107060S axle)
17.2 qt (16.3 L)1Automatic transmission fluid
Keep in FULL range on dipstickPower steering fluid
Fill as requiredWindshield washer fluid
80 gal (303 L)Fuel tank (Motorhome)
40 gal (151 L)Fuel tank (Commercial chassis)
44 oz (1.25 kg)A/C refrigerant
8.8 fl oz (260.2 ml)A/C refrigerant compressor oil
1 Approximate dry fill capacity. Actual amount may vary during fluid changes.
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