SPECIFICATIONS 67 Valve Mechanism Note: When replacing valve seats, also replace the valves.
Rocker Arms T2023980 Measurement (A) between valve head and cylinder head face Inlet 1.0 mm (0.039 inch) minimum Exhaust 1.35 mm (0.053 inch) minimum Maximum wear value Inlet 1.7 mm (0.067 inch) Exhaust 1.5 mm (0.059 inch) Valve lash (clearance) cold engine, adjustment value Inlet 0.2 mm (0.008 inch) Exhaust 0.8 mm (0.031 inch) Exhaust,Volvo Engine Brake 1.0 mm (0.394 inch) Valve lash (clearance) cold engine, check value Inlet 0.15–0.25 mm (0.006–0.009 inch) Exhaust 0.75–0.85 mm (0.029–0.033 inch) Exhaust, Volvo Engine Brake 0.95–1.05 mm (0.037–0.041 inch) Rocker arm bearing clearance 0.08 mm (0.003 inch) maximum Rocker arm roller clearance 0.1 mm (0.004 inch) maximum