SUPPORT ASSEM. 4N8501 - Caterpillar

Removal Procedure
Start By:
Remove the valve cover. Refer to Disassembly and Assembly, "Valve Cover Base - Remove and Install".
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 1 g00670986
Remove bolts (1) that hold rocker arm assembly (2). Remove rocker arm assembly (2). Place identification marks on the rocker arm assembly so that the rocker arm assembly can be installed in the same location.
Illustration 2 g00638228
Place identification marks on pushrods (4) for assembly purposes and remove pushrods (4).
Remove valve bridges (3). Identify the location of each valve bridge so that the valve bridges can be installed in the same location.
Inspect the bore of each valve bridge for roughness or wear. Be sure that the passage for lubrication in the valve bridge is not restricted.
Inspect bridge dowels (5) for roughness or wear. If removal of the bridge dowel is necessary, refer to Disassembly and Assembly, "Cylinder Head - Disassemble".