HOSE AS 3979832 - Caterpillar

Illustration 1 g00819698
(1) Dowel pinsThe dowel pins in the cylinder block hold the cylinder head gasket in the correct position when the cylinder head is installed. (2) Cylinder head gasket (3) The stamped marking on the cylinder head gasket must face upward. This ensures that the cylinder head gasket is installed correctly.
Illustration 2 g00819713
Put clean engine oil on the threads of the cylinder head bolts. Tighten all of the bolts finger tight. Tighten the bolts in the number sequence in Illustration 2.Tighten the cylinder head bolts to the following torque. ... 101 N m (75 lb ft) (4) Cylinder head Minimum distortion of the cylinder head ... 0.0 to 0.05 mm (0.000 to 0.002 inch) Maximum distortion of the cylinder head ... 0.12 mm (0.005 inch) Service limit ... 0.15 mm (0.006 inch)Refer to Testing and Adjusting, "Cylinder Head - Inspect" for the procedures for measuring the cylinder head.
Illustration 3 g00819738
(5) Piston height
Table 1
Piston Height Below Cylinder Block     Thickness of Cylinder Head Gasket    
-0.45 to -0.30 mm (-0.018 to -0.012 inch)    
-0.40 mm (-0.016 inch)    
-0.29 to -0.20 mm (-0.012 to -0.008 inch)    
-0.50 mm (-0.020 inch)    Note: If the cylinder head has been machined, check the valve depth below the cylinder head face. See Specifications, "Cylinder Head Valves". Before any work is done on the valve seats, new valve guides must be installed.