Ford F150 Pickup. Instruction - part 1003

Fig. 35: Installing Water Pump Pulley On Water Pump 
Courtesy of FORD MOTOR CO. 

4. Tighten the bolts in the sequence shown. 

 

2003 Ford Pickup F150 

2003 ENGINE Engine Cooling - F150 Pickup

  

Fig. 36: Identifying Water Pump Pulley Bolt Tightening Sequence 
Courtesy of FORD MOTOR CO. 

5. On the 4.2L engine only, install the upper radiator hose on the water pump.  

 

2003 Ford Pickup F150 

2003 ENGINE Engine Cooling - F150 Pickup

  

6. Install the drive belt. For additional information, refer to ACCESSORY DRIVE - F150 PICKUP .  

7. Install the engine cooling fan and fan shroud. For additional information, refer to COOLING FAN-

BLADE, CLUTCH & SHROUD .  

RADIATOR 

Removal 

1. Remove the fan. For additional information, refer to COOLING FAN-BLADE, CLUTCH & 

SHROUD . 

Fig. 37: Disconnecting Transmission Fluid Cooler Lines 
Courtesy of FORD MOTOR CO. 

2. On automatic transmission equipped vehicles, disconnect the transmission fluid cooler fitting. 

1. Disconnect the upper transmission fluid cooler fitting.  

2. Disconnect the lower transmission fluid cooler fitting.  

3. Disconnect the lower radiator hose from the radiator (8005). 

NOTE:

To avoid disturbing the transmission oil cooler fittings, use a backup 
wrench.

 

2003 Ford Pickup F150 

2003 ENGINE Engine Cooling - F150 Pickup

  

Fig. 38: Disconnecting Lower Radiator Hose 
Courtesy of FORD MOTOR CO. 

4. Remove the radiator. 

1. Remove the upper radiator support bracket bolts.  

2. Remove the upper radiator support brackets and the jack handle and wheel nut wrench retainers.  

3. Lift the radiator off the radiator mounting insulators (8124).  

4. Remove the radiator mounting insulators. 

 

2003 Ford Pickup F150 

2003 ENGINE Engine Cooling - F150 Pickup