Ford F150 Pickup. Instruction — part 1057

Remove the balance shaft drive gear, thrust plate and engine dynamic balance shaft as
an assembly.

Fig. 138: Removing Engine Dynamic Balance Shaft
Courtesy of FORD MOTOR CO.

Installation

2003 Ford Pickup F150

2003 ENGINE Engine - 4.2L - F150 Pickup

Fig. 139: Aligning Camshaft Gear Timing Mark With Engine Balance Shaft Drive

NOTE:

If correctly aligned, the engine dynamic balance shaft keyway
will be at 12 o'clock and the camshaft keyway will be at 6
o'clock on the camshaft.

2003 Ford Pickup F150

2003 ENGINE Engine - 4.2L - F150 Pickup

Gear Timing Mark
Courtesy of FORD MOTOR CO.

1. Turn the camshaft so that the timing mark is at 12 o'clock and install the engine dynamic

balance shaft assembly into the cylinder block. Turn the engine balance shaft driven gear so
that the timing mark on the camshaft gear lines up with the timing mark on the engine
balance shaft drive gear.

2. Install the bolts.

Fig. 140: Installing Engine Dynamic Balance Shaft Thrust Plate Bolts
Courtesy of FORD MOTOR CO.

3. Install the timing chain. For additional information, refer to TIMING CHAIN -

TENSIONER .

TIMING CHAIN - TENSIONER

Removal

2003 Ford Pickup F150

2003 ENGINE Engine - 4.2L - F150 Pickup

1. Remove the timing cover. For additional information, refer to ENGINE FRONT

COVER .

2. Remove the camshaft synchronizer drive gear.

1. Remove the bolt.

2. Remove the camshaft synchronizer drive gear.

Fig. 141: Removing Camshaft Synchronizer Drive Gear
Courtesy of FORD MOTOR CO.

3. Rotate the crankshaft until the timing marks and keyways align.

2003 Ford Pickup F150

2003 ENGINE Engine - 4.2L - F150 Pickup