ENGINE6-6 TNV DI Service ManualIntroductionINTRODUCTIONThis section of the Service Manual describes servicing of the engine.CYLINDER HEAD SPECIFICATIONSAdjustment SpecificationsCylinder HeadModel Valve Clearance Valve Bridge Clearance(4-Valve Head Only)All except 4TNV106, 4TNV106T 0.006 - 0.010 in.(0.15 - 0.25 mm) 04TNV106, 4TNV106T 0.010 - 0.014 in.(0.25 - 0.35 mm) 0Inspection Item Standard Limit ReferencePageCombustion Surface Distortion (Flatness) 0.0020 in.(0.05 mm) or less0.0059 in.(0.15 mm)See ValveRecession onpage 6-39and 6-54.Valve Recession3TNV82A(2-Valve Head)Intake 0.0138 - 0.0217 in.(0.35 - 0.55 mm) 0.0315 in. (0.8 mm)Exhaust 0.0118 - 0.0197 in.(0.30 - 0.50 mm) 0.0315 in. (0.8 mm)3TNV84, 3TNV84T,3TNV88, 4TNV84,4TNV84T, 4TNV88(2-Valve Head)4TNV84T (4-ValveHead)Intake 0.0118 - 0.0197 in.(0.30 - 0.50 mm) 0.0315 in. (0.8 mm)Exhaust 0.0118 - 0.0197 in.(0.30 - 0.50 mm) 0.0315 in. (0.8 mm)4TNV94L, 4TNV98,4TNV98T(4-Valve Head)Intake 0.0142 - 0.0220 in.(0.36 - 0.56 mm) 0.0315 in. (0.8 mm)Exhaust 0.0138 - 0.0217 in.(0.35 - 0.55 mm) 0.0315 in. (0.8 mm)4TNV106, 4TNV106T(4-Valve Head)Intake 0.0197 - 0.0276 in.(0.50 - 0.70 mm) 0.0394 in. (1.0 mm)Exhaust 0.0276 - 0.0354 in.(0.70 - 0.90 mm) 0.0472 in. (1.2 mm)Valve Seat(2-Valve, 4-Valve)Seat Angle Intake 120° - See ValveFace andValve Seaton page 6-40and 6-54.Exhaust 90° -Seat Correction Angle 40°, 150° -
