Town & Country V6-4.0L (2008)
Valve: Procedures
Cleaning
CLEANING
1. Clean all valves thoroughly and discard burned, warped and cracked valves.
Inspection - Valves
INSPECTION - VALVES
1. Measure valve stems for wear approximately 60 mm (2.36 in.) below the valve lock grooves.
2. Compare measurement to specifications,See: Specifications/Engine Specifications.
NOTE: Valve stems are chrome plated and should not be polished.
Inspection - Valve Guides
INSPECTION - VALVE GUIDES
1. Measure valve stem-to-guide clearance as follows:
2. Install valve into cylinder head so it is 15 mm (0.590 inch.) off the valve seat. A small piece of hose may be used to hold valve in place.
3. Attach dial indicator Tool C-3339 to cylinder head and set it at right angle of valve stem being measured.
4. Move valve to and from the indicator.
5. Note dial indicator reading and compare to engine specifications.See: Specifications/Engine Specifications
NOTE: Replace cylinder head if stem-to-guide clearance exceeds specifications, or if guide is loose in cylinder head.
