BREATHER AS 8J5604 - Caterpillar

Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 1U-9169 Valve Guide Driver 1 Start By:
Remove the inlet valves and the exhaust valves. Refer to Disassembly and Assembly, "Inlet and Exhaust Valves - Remove and Install".
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 1 g00632175
Typical example
Use Tooling (A) in order to remove the valve guides from the cylinder head.
Repeat the procedure for the remaining valve guides. Installation Procedure
Table 2
Required Tools
Tool Part Number Part Description Qty
A 1U-9169 Valve Guide Driver 1
B 9U-6220 Stop Collar 1
C 157-3720 Valve Seat Cutter 1
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 2 g00632176
Typical example
Put the valve guide in position. Carefully tap the valve guide in order to start the installation. Use Tooling (A) and Tooling (B) to seat the valve guide in the cylinder head. Note: After installing the unfinished valve guides and valve seat inserts, you must ream the valve guides and valve seat inserts to the finished diameter. The valve guides and valve seat inserts are cut and reamed in one operation. This operation is performed by using the 157-3720 Valve Seat Cutter. Refer to Specifications, RENR2401, "Cylinder Head Valves" for the finished diameter of the valve guides and valve seat inserts.
Check the protrusion of the valve guides. The valve guides should protrude 14.85 to 15.15 mm (0.585 to 0.597 inch) above the valve spring recess.
Repeat the procedure for the remaining valve guides. End By:
Install the inlet valves and the exhaust valves. Refer to Disassembly and Assembly, "Inlet and Exhaust Valves - Remove and Install".