ACTUATOR AS-BK 5217527 - Caterpillar

Start By:a. remove cylinder head assembly 1. Use Tool (A) to compress springs (1).2. Remove the locks.3. Remove Tool (A), the valve, the rotocoil, and the spring. If a valve can be used again, put identification on the valve for location at installation. 4. Use Tool (B) to check spring force. The specifications for the spring are given in Specifications Manual.5. Do Steps 1 through 4 again for the remainder of the valves.Install Valves 1105-012
1. Put clean engine oil on the valve stem. Install washer (3), spring (2), rotocoil (1) and the valve. 2. Use Tool (A) to compress the spring.3. Install locks (4) with the thick end up.
Locks can be thrown from valve when compressor is released, if they are not in their correct position on the valve stem.
4. Remove the compressor and hit the valve with a soft faced hammer to be sure locks are in their correct position on the valve. 5. Do Steps 1 through 4 again for the remainder of the valves.End By:a. install cylinder head assembly