RACE 6I6498 - Caterpillar

start by: a) remove cylinder headb) remove precombustion chambers 1. Put compression on valve spring (2) with tool (A) and remove locks (1).2. Remove tool (A), rotocoil, spring and valve. Put identification marks on the valves. Identification marks are necessary for correct installation of the valves. 3. Check the spring force with tool (B). For the specifications for the spring, see the Specifications Section.4. Do Steps 1 through 3 again for the remainder of valves.Install Valves
1. Put clean engine oil on the valve stems. Install the valve, spring and rotocoil in the cylinder head. 2. Put tool (A) in position on the valve spring and install locks (1).
The locks can be thrown from the valve when the compressor is released if they are not in their correct position on the valve stem.
3. Remove tool (A) and hit the top of the valve with a plastic hammer to be sure the locks are in their correct position on the valve.4. Do Steps 1 through 3 again for the remainder of the valves.end by: a) install precombustion chambersb) install cylinder head