Volvo EPA2007 D13F Reference Manual page 37

Locknut, Valve Adjustment Screw
Locknut, valve adjustment screw (inlet/exhaust) .....................38 ± 4 Nm (28 ± 3 ft-lb)
or, angle tighten after contact................................................................... 60 ± 5 degrees
Locknut, Valve Adjustment Screw (Volvo Engine Brake)
Locknut, valve adjustment screw (exhaust, VEB)....................38 ± 4 Nm (28 ± 3 ft-lb)
or, angle tighten after contact.............................................................30 +1.5 -0 degrees
Note: Hold the valve bridge while tightening.
SPECIFICATIONS 31
T2022965
T2022966