Dodge Durango

 Service Manual

Engine » Removal and installation
Valve springs and seals

REMOVAL

(1) Remove the cylinder head cover. Refer to Cylinder Head Cover in this Section.

(2) Using Special Tool 8516 Valve Spring Compressor, remove the rocker arms and the hydraulic lash adjusters (Fig. 67).

Fig. 67 Rocker Arm-Removal

1 - CAMSHAFT

2 - SPECIAL TOOL 8516

(3) Remove the spark plug for the cylinder the valve spring and seal are to be removed from.

(4) Apply shop air to the cylinder to hold the valves in place when the spring is removed (5) Remove the camshaft. Refer to Camshaft in this section.

NOTE: All eight valve springs and seals are removed in the same manner; this procedure only covers one valve seal and valve spring.

(6) Using Special Tool 8387 Valve Spring Compressor, compress the valve spring.

NOTE: It may be necessary to tap the top of the valve spring to loosen the spring retainers locks enough to be removed.

(7) Remove the two spring retainer lock halves.

NOTE: the valve spring is under tension use care when releasing the valve spring compressor.

(8) Remove the valve spring compressor.

(9) Remove the spring retainer, and the spring.

(10) Remove the valve stem seal.

NOTE: The valve stem seals are common between intake and exhaust.

INSTALLATION

(1) coat the valve stem with clean engine oil and install the valve stem seal. make sure the seal is fully seated and that the garter spring at the top of the seal is intact.

(2) Install the spring and the spring retainer.

(3) Using Special Tool 8387 Valve Spring Compressor, compress the spring and install the two valve spring retainer halves.

(4) Release the valve spring compressor and make sure the two spring retainer halves and the spring retainer are fully seated.

(5) Install the camshaft. Refer to Camshaft in this section.

(6) Position the hydraulic lash adjusters and rocker arms (Fig. 67).

(7) Install the cylinder head cover.

Engine mounts-left and right

Engine mount-rear

Structural cover

Engine assembly

Intake manifold

Exhaust manifolds

Cylinder head cover

Rocker arms

Cylinder heads

Valve springs and seals

Hydraulic lash adjuster

Crankshaft damper

Timing chain cover

Timing chain and sprockets

Idler shaft-timing drive

Camshafts-in vehicle

Crankshaft main bearings

Oil pan 4x2 vehicle

Oil pan 4x4 vehicle

Piston and connecting rod

Crankshaft

Flexplate

Oil pump

Engine oil pressure sending unit

Crankshaft oil seal-front

Crankshaft oil seal-rear

Engine core plugs