On Vehicle
WARNING: This page is about a different variant/trim than selected.
NOTE:
The intake and exhaust springs are NOT interchangeable. Mark the springs accordingly for installation. Correctly identify the part numbers for new springs being installed.
- Remove the camshafts, rocker arms and hydraulic lifters. Refer to LIFTER(S), HYDRAULIC, REMOVAL .
- Remove the spark plugs. Refer to SPARK PLUG, REMOVAL
.
- Remove the fuel pressure sensor (1) from the fuel rail.
- Reinstall the fuel injectors and fuel rail (1) to the cylinder head and tighten the bolts (2) to the proper torque specification. Refer to
TORQUE SPECIFICATIONS
.
- Install the (special tool #10224, Adapter, Valve Spring) on the (special tool #MD998772A, Compressor, Valve Spring).
- Install the (special tool #MD998772A, Compressor, Valve Spring) (1) onto the cylinder head.
- Install a spark plug adapter and the (special tool #2049200090, Regulator, Pressure Test) (2) to the cylinder being serviced. Pressurize the cylinder being serviced to 620.5 - 689 kPa (90 - 100 psi) to hold the valves in place.CAUTION:
Air pressure must be maintained as long as the valve springs are removed to prevent the valves from dropping into the cylinders.
- Using the (special tool #10224, Adapter, Valve Spring) (1), compress valve spring (3) and remove valve retaining locks (2).NOTE:
The intake and exhaust springs are NOT interchangeable. Mark the springs accordingly for installation. Correctly identify the part numbers for new springs being installed.
NOTE:If the springs are to be reused, identify their positions so that they can be reassembled into their original locations.
- Release the valve spring compression and remove the valve spring retainer (1) and valve spring (2).
- If required, remove the valve guide seal. Refer to SEAL(S), VALVE GUIDE, REMOVAL .