3116 and 3126 Truck Engines Valve Rocker Arms And Lifters

(1) Bore in rocker arm for shaft (new) … 24.808 ± 0.020 mm (0.9767 ± 0.0008 in)

Diameter of shaft (new) … 24.755 ± 0.010 mm (0.9746 ± 0.0004 in)
(2) Torque for locknut … 25 ± 7 N·m (18 ± 5 lb ft)

(3) Valve lash:

Intake Valves … 0.38 mm (0.015 in)Exhaust Valves … 0.64 mm (0.025 in)
(4) Bore in lifter arm for shaft (new) … 15.670 ± 0.012 mm (0.6169 ± 0.0005 in)

Diameter of shaft (new) … 15.620 ± 0.012 mm (0.6150 ± 0.0005 in) Tighten bolts to a torque of … 13 ± 3 N·m (10 ± 2 lb ft)

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