WEIGHT AS 4P7822 - Caterpillar

Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 241-0124 Valve Spring Compressor 1
B 4C-9496 Spring Tester 1 Start By:
Remove the rocker shaft and pushrods. Refer to Disassembly and Assembly, "Rocker Shaft and Pushrod - Remove".
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Note: Place the piston at the top of the compression stroke (TC). Remove the valve springs for that cylinder. If the valves fall into the cylinder liner, then the cylinder head must be removed.
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 g01133502
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) on valve mechanism cover base (6).
Use Tooling (A) to compress inner valve spring (3) and outer valve spring (4). Remove valve spring keepers (1) from the valve.
Carefully remove Tooling (A).
Remove valve rotator (2), inner valve spring (3), and outer valve spring (4).
Remove washer (5) from the exhaust valve guide. Note: Washers are not installed on the inlet 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 241-0124 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 2 g01133502
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.
Position washer (5), inner valve spring (3), and outer valve spring (4) on the exhaust valve guide.
Position inner valve spring (3) and outer valve spring (4) on the inlet valve guide. Note: Washer (5) is not installed on the inlet valve guides.
Position valve rotator (2) on the valve stem.
Install Tooling (A) on valve mechanism cover base (6).
Use Tooling (A) to compress inner valve spring (3) and outer valve spring (4). Install valve spring keepers (1) on the valve. Ensure that the valve spring keepers are properly installed.
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.
Carefully remove Tooling (A). End By:
Install the rocker shaft and pushrods. Refer to Disassembly and Assembly, "Rocker Shaft and Pushrod - Install".