GUARD 8Y6708 - Caterpillar

Removal Procedure
Table 1
Required Tools    
Tool     Part Number     Part Description     Qty    
A     1U-7793     Valve Guide Driver (1)     1    
( 1 ) Part of 1U-6685 Valve Guide Tool Kit Start By:
Remove the inlet and 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.
Note: For information on the reusability of the valve guides, refer to Guideline For Reusable Parts And Salvage Operations, SEBF8218, "Specifications for Cylinder Head Asseblies 3114, 3116, and 3126 Engines" and Guideline For Reusable Parts And Salvage Operations, SEBF8162, "Procedure to Measure and Salvage Cylinder Head Assemblies and Related Components".
Illustration 1 g00745735
Typical example
Use Tooling (A) to remove the inlet valve guides from the cylinder head assembly. Use Tooling (A) to remove the exhaust valve guides from the cylinder head assembly. Installation Procedure
Table 2
Required Tools    
Tool    Part Number    Part Description    Qty    
A     1U-7793     Valve Guide Driver (1)     1    
B     1U-7792     Guide Collar (1)     1    
C     9U-6895     Valve Guide Driver     1    
D     149-4008     Guide Collar     1    
( 1 ) Part of 1U-6685 Valve Guide Tool Kit
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Note: For information on the reusability of the valve guides, refer to Guideline For Reusable Parts And Salvage Operations, SEBF8218, "Specifications for Cylinder Head Assemblies 3114, 3116, and 3126 Engines" and Guideline For Reusable Parts And Salvage Operations, SEBF8162, "Procedure to Measure and Salvage Cylinder Head Assemblies and Related Components".
Illustration 2 g00745782
Typical example
Position inlet valve guide (1) and tap on the top of inlet valve guide (1). This is done in order to start inlet valve guide (1) into the cylinder head assembly.
Use Tooling (A) and Tooling (B) to install inlet valve guide (1). Install inlet valve guides (1) until tooling (B) contacts the cylinder head.
Illustration 3 g00745672
Typical example
Position exhaust valve guide (2) and tap on the top of exhaust valve guide (2). This is done in order to start the exhaust valve guide into the cylinder head assembly.Note: Some of the early engines have inlet valves and exhaust valves that are identical in size. Use the same specifications and the same tools for both valves. Proceed to Step 4 if the valves are not the same size.
Use Tooling (C) and Tooling (D) to install exhaust valve guide (2). Install inlet valve guides (2) until tooling (D) contacts the cylinder head.End By: Install the inlet and exhaust valves. Refer to Disassembly and Assembly, "Inlet and Exhaust Valves - Remove and Install".