PAN-OIL 1W5984 - Caterpillar

Remove Valves
preparatory step: a) remove cylinder head1. Using valve spring compressor (A) compress the valve spring and remove the locks (1).2. Remove the compressor, rotocoil assembly, spring and valve. If valves are not going to be replaced mark them with respect to their location in the cylinder head. 3. Using valve spring tester (B) check the spring force. Spring force should be 54.8 to 60.6 lbs. (24,8 to 27,4 kg) when the spring is compressed to 1.766 in. (44,86 mm).4. Repeat the above steps for the remaining valves.Install Valves
1. Lubricate the valve stem with clean SAE 30 engine oil. Install the valve, spring, rotocoil assembly in the cylinder head. 2. Using valve spring compressor (A) compress the valve spring and install the locks.
Locks can be ejected from valve when compressor is released if it is not properly positioned on the valve stem.
3. Remove the valve spring compressor and tap the valve (1) with soft hammer to seat the locks.4. Repeat the above steps for the remaining valves.concluding step: a) install cylinder head