SHAFT 5F6393 - Caterpillar

Remove Inlet & Exhaust Valves
Start By:a. remove cylinder head
Typical Example1. Put springs (1) in compression with Tool (A).2. Remove locks from inlet & exhaust valves.3. Remove Tool (A), rotocoil, spring and valve. If inlet & exhaust valves can be used again, put identification on the inlet & exhaust valves for location at installation.
Typical Example4. Check the spring force with Tool (B). Spring force must be 344.7 17.3 N (77.5 3.9 lb). When the length of spring under force is 54.99 mm (2.165 in).5. Repeat Steps 1 through 4 for the remainder of the inlet & exhaust valves.Install Inlet & Exhaust Valve
Typical Example1. Put clean engine oil on the valve stem. Install spring (2), rotocoil (1) and valve.
Typical Example2. Put the spring in compression with Tool (A).3. Install locks (3) with the thick end up.
Locks can be thrown from the valve when the spring compressor is released if the locks are not in their correct position.
4. Remove compressor and hit valve with a soft hammer to be sure the locks are in their correct position.5. Repeat Steps 1 through 4 again for the remainder of the inlet & exhaust valves. For more detailed information regarding the inlet & exhaust valves, see the topic "Inlet & Exhaust Valves, Valve Springs & Valve seat Inserts" in the Specifications Module.End By:a. install cylinder head