Dodge 2001 Ram 1500 Owner's Manual page 1402

BR/BE
INTAKE/EXHAUST VALVES & SEATS (Continued)
CLEANING
Clean the valve stems with crocus cloth or a
Scotch-Brite™ pad. Remove carbon with a soft wire
brush. Clean valves, springs, retainers, and valve
retaining locks in a suitable solvent. Rinse in hot
water and blow dry with compressed air.
INSPECTION
Visually inspect the valves for abnormal wear on
the heads, stems, and tips. Replace any valve that is
worn out or bent (Fig. 40).
Fig. 40 Visually Inspect Valves for Abnormal Wear
Measure the valve stem diameter in three places
as shown in (Fig. 41).
Fig. 41 Measure Valve Stem Diameter
VALVE STEM DIAMETER
6.96 mm (0.2740 in.) MIN
7.010 mm (0.2760 in.) MAX
ENGINE 5.9L DIESEL
Measure the cylinder head valve guide bore (Fig.
42). Subtract the corresponding valve stem diameter
to obtain valve stem-to-guide clearance.
Fig. 42 Measure Valve Guide Bore
Measure valve margin (rim thickness) (Fig. 43).
Fig. 43 Measure Valve Margin (Rim Thickness)
VALVE MARGIN (RIM THICKNESS)
0.72 mm (0.031 in.) MIN.
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