COVER AS-BODY 5S5736 - Caterpillar

Table 1
Required Tools    
Tool     Part Number     Part Description     Qty    
A     9U-7241     Valve Spring Compressor     1    
B     8S-2263     Spring Tester     1    Start By:
Remove the electronic unit injectors. Refer to Disassembly and Assembly, "Electronic Unit Injector - Remove".
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Note: The following procedure is for the removal of the inlet valve springs and the exhaust valve springs without removing the cylinder head. This procedure can be performed on only one cylinder at a time. This will prevent the inlet valves and the exhaust valves from falling into the cylinder.
Position the No. 1 piston at the top center of the compression stroke. Refer to Testing and Adjusting, "Finding Top Center Position for No. 1 Piston".
Illustration 1 g01260774
Illustration 2 g01260809
Personal injury can result from being struck by parts propelled by a released spring force.Make sure to wear all necessary protective equipment.Follow the recommended procedure and use all recommended tooling to release the spring force.
Install Tooling (A) in the electronic unit injector sleeve. Secure Tooling (A) with unit injector clamp (1) .
Tighten the full nut until valve spring keepers (3) are loose on valve (2) .
Remove valve spring keepers (3) from the valve.
Carefully remove Tooling (A) .
Remove valve rotator (4) .
Remove outer valve spring (6) and inner valve spring (5) from the valve.
Remove washer (7) from the valve guide.
Use Tooling (B) to check the valve springs (spring force). Refer to Specifications, "Cylinder Head Valves" for additional information on the valve springs.Installation Procedure
Table 2
Required Tools    
Tool     Part Number     Part Description     Qty    
A     9U-7241     Valve Spring Compressor     1    
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Lubricate the valve stems with clean engine oil.
Illustration 3 g01260809
Illustration 4 g01260774
Improper assembly of parts that are spring loaded can cause bodily injury.To prevent possible injury, follow the established assembly procedure and wear protective equipment.
Ensure that washer (7) is installed on the valve guide.
Install inner valve spring (5) and outer valve spring (6) on valve (2) .
Install valve rotator (4) on valve (2) .
The valve spring keepers can be thrown from the valve when the valve spring compressor is released. Ensure that the valve spring keepers are properly installed on the valve stem. To help prevent personal injury, keep away from the front of the valve spring keepers and valve springs during the installation of the valves.
Use Tooling (A) to compress inner valve spring (5) and outer valve spring (6). Install valve spring keepers (3) on valve (2) .
Remove unit injector clamp (1) and Tooling (A) .End By: Install the electronic unit injectors. Refer to Disassembly and Assembly, "Electronic Unit Injector - Install".