GAUGE AS-OIL LEVEL (DIPSTICK) 4455666 - Caterpillar

Chart B has the parts for installation in D9 Tractors, 594 Pipelayers, and D353, D379, D398 and D399 Industrial and Marine Engines. Chart C has the parts for installation in D8 Tractors and 583 Pipelayers. Chart D has the service head assemblies which are available with the new valves and guides.
The guides must have 0.038 mm (.0015") clearance. Some guides will have to be machined; other guides will not. For clearance checks, the valve stem is to be measured about 115 mm (4.50") from the keeper end.
The clearance between the valve and valve guide has an effect on the service life of the valve guide. It is necessary to have the correct clearance to stop the movement of combustion gases and the corrosion and wear which are the results.
Use the 1P7451 Valve Guide Honing Group and 5P8615 Honing Oil to get the final clearance, if necessary. The complete procedure for use of the 1P7451 Valve Guide Honing Group is given in Special Instruction, Form No. SMHS7526.
Use the 1P7430 Valve Guide Driver Assembly and the 2P2313 Valve Guide Driver Bushing to install the valve guides to the correct depth in heads for D9 Tractors, 594 Pipelayers, and D353, D379, D398 and D399 Industrial and Marine Engines. For those shops that do not have these tools, the tops of the valve guides must be 44.45 0.50 mm (1.75 .019") above the machined surface around the valve guide hole.
For D8 Tractors and 583 Pipelayers, use the 1P7430 Valve Guide Driver Assembly and the 5P1727 Valve Guide Driver Bushings to install the guides to the correct depths. The tops of the guides must be 42.93 0.50 mm (1.690 .019") above the machined surface around the valve guide holes.