Durango 2WD V8-5.7L Hybrid (2009)
Valve: Removal and Replacement
Intake and Exhaust Valves - Removal
REMOVAL
1. Remove the cylinder head See: Service and Repair/Removal and Replacement/Cylinder Head - Removal.
2. Compress valve springs using valve spring compressor tool C-3422-D and adapter 8464.
3. Remove valve retaining locks, valve spring retainers, valve stem seals and valve springs.
4. Before removing valves, remove any burrs from valve stem lock grooves to prevent damage to the valve guides. Identify valves to ensure
installation in original location.
Intake and Exhaust Valves - Installation
INSTALLATION
1. Clean the valves thoroughly. Discard burned, warped and cracked valves.
2. Remove the carbon and varnish deposits from inside of the valve guides with a reliable guide cleaner.
3. Measure the valve stems for wear. If wear exceeds 0.051 mm (0.002 inch), replace the valve.
4. Coat the valve stems with lubrication oil and insert them into the cylinder head.
5. If the valves or seats are reground, check the valve stem height. If the valve is too long, replace the cylinder head.
6. Install new seals on all valve guides. Install the valve springs and valve retainers.
7. Compress the valve springs with valve spring compressor tool C- 3422 and adapter 8464, install locks and release tool. If valves and/or seats are
ground, measure the installed height of the springs. Make sure the measurement is taken from the bottom of spring seat in the cylinder head to the
bottom surface of the spring retainer.
8. Install the cylinder head See: Service and Repair/Removal and Replacement/Cylinder Head - Installation