RAM 3500 Truck 4WD L6-5.9L DSL Turbo VIN 6 (1998)
Valve Guide: Service and Repair
Service Procedures
Thick Wall
Service Valve Guides-Thick Wall
Machine the cylinder head valve guide bores to 14.000 ± 0.013 mm (0.5512 ± 0.0005 inch) diameter.
Valve guides must be centered with valve seats within 0.35 mm (0.01378 inch) diameter. Valve guides must also be square with the combustion face
within 0.10 mm (0.004 inch) at 50.0 mm (2.0 inch) radius.
Lubricate the valve guides with oil and press in the guides to 12.25 ± 0.50 mm (0.4823 ± 0.020 inch) protrusion above the cylinder head.
Ream the bores to 8.029 ± 0.010 mm (0.3161 ± 0.0004 inch).
Thin Wall
Service Valve Guides-Thin Wall
Machine the cylinder head valve guide bores to 11.125 ± 0.013 mm (0.4380 ± 0.0005 inch) in diameter.
Service valve guides must be centered with valve seats within 0.35 mm (0.01378 inch) diameter. They must also be square with the combustion face
within 0.10 mm (0.004 inch) at 50.0 mm (1.9685 inch) radius.
