Ford F150 Pickup. Instruction - part 1711

Fig. 15: Disconnecting Vacuum Line 
Courtesy of FORD MOTOR CO. 

7. Remove the plenum chamber top. 

1. Remove the 15 screws.  

2. Remove the plenum chamber top. 

 

2003 Ford Pickup F150 

2003 HVAC Heating And Ventilation - F150 Pickup

  

Fig. 16: Removing Plenum Chamber Top 
Courtesy of FORD MOTOR CO. 

8. Remove the blend door assembly from the case.  

9. Remove the heater core. 

 

2003 Ford Pickup F150 

2003 HVAC Heating And Ventilation - F150 Pickup

  

Fig. 17: Identifying Heater Core 
Courtesy of FORD MOTOR CO. 

10. To install, reverse the removal procedure. 

z

Lubricate the coolant hoses with coolant hose lubricant or plain water only, if needed. 

 

2003 Ford Pickup F150 

2003 HVAC Heating And Ventilation - F150 Pickup

  

2003 SPECIFICATIONS

F150 Pickup 

AIR CONDITIONING 

AUTOMATIC SYSTEM 

Service Specifications 

AUTOMATIC A/C SYSTEM SPECIFICATIONS 

Application

Specification

Compressor Type

FS-10 Swashplate, 5 Double-Acting Pistons

Compressor Belt Tension

(1)

Compressor Displacement

10.4 cu. in. (170 cc)

Compressor Oil Capacity

(2)

Normal Refrigerant Discharge Pressure

(3)

 148-263 psi. (331-1813 kPa)

Normal Refrigerant Suction Pressure

(3)

 32.5-52.5 psi. (224-362 kPa)

System Oil Capacity 

(4)

9 ozs.

Refrigerant (R-134a) Capacity

33 ozs.

A/C Pressure Relief Valve Opening Pressure

550-600 psi (3792-4137 kPa)

A/C Cycling Switch

Close

42 psi (290 kPa)

Open

21-23 psi (145-159 kPa)

Orifice Tube

Color

Blue

Diameter

.067" (1.70 mm)

Pressure Cut-Off Switch

Close

230-290 psi (1586-2000 kPa)

Open

435-475 psi (2999-3275 kPa)

(1)

Serpentine belt tension is automatically adjusted by tensioner pulley.

(2)

Rotate A/C compressor shaft 6-8 revolutions while collecting oil in a clean measuring device. If 
amount of oil drained from old A/C compressor is between 3-5 ounces (85-142 ml), pour same 
amount plus one ounce (30 ml) of clean PAG Refrigerant Compressor Oil (R-134a Systems) or 
equivalent into new A/C compressor. If amount of oil that was removed from old A/C compressor is 
greater than 5 ounces (142 ml), pour same amount drained of clean PAG Refrigerant Compressor Oil 
(R-134a Systems) or equivalent into new A/C compressor. If amount of oil that was removed from 
old A/C compressor is less than 3 ounces (85 ml), pour 3 ounces (85 ml) of clean PAG Refrigerant 
Compressor Oil (R-134a Systems) or equivalent into new A/C compressor.

(3)

Specification is with ambient air temperature at 80°F (27°C) and humidity at 30-60%.

(4)

Use YN-12c PAG Refrigerant Oil (Part No. F7AZ-19589-DA).

 

2003 Ford Pickup F150 

2003 SPECIFICATIONS F150 Pickup

  

 

2003 Ford Pickup F150 

2003 SPECIFICATIONS F150 Pickup