PISTON & ROD GP 3844314 - Caterpillar

Illustration 1 g01627678
Front view of head
Illustration 2 g01627681
Top view of head (1) Refer to Specifications, "Cylinder Head" for information that relates to the procedure for tightening the cylinder head bolts.Note: Tighten cylinder head bolts (1) before you tighten rocker arm shaft bolts (6) .Note: Apply 8T-2998 Lubricant to the ball and the ball socket of the pushrod, and the lifter bore, with a mixture that consists of 50% camshaft lubricant and 50% engine oil prior to the assembly of the valve train components. (A) Valve lash Inlet valves ... 0.38 0.10 mm (0.015 0.004 inch) Exhaust valves ... 0.76 0.10 mm (0.030 0.004 inch) (2) Torque for the adjustment screw locknut ... 30 4 N m (22 3 lb ft)Note: Recheck valve lash setting. (B) Dimensions for the rocker arm shaftBore in the sleeve bearing for the rocker arm shaft assembly after installation ... 24.803 mm (0.9765 inch)Diameter of the rocker arm shaft ... 24.752 0.013 mm (0.9745 0.0005 inch) (3) Lifter guide springs must not be used again. Always install new lifter guide springs. (C) Dimensions for the valve lifter assemblyBore in the head for the valve lifter assembly ... 27.953 0.019 mm (1.1005 0.0007 inch)Diameter of the valve lifter assembly ... 27.896 0.013 mm (1.0983 0.0005 inch)Note: Special tooling, specifications, and procedures are needed to install sleeves in the cylinder block lifter bores. Refer to Guideline For Reusable Parts And Salvage Operations, SEBF8069, "Procedure To Repair Engine Lifter Bores" for the salvage procedure of the lifter bores in the cylinder block.