Tools Required
J 8062 Valve Spring Compressor This engine uses a 39 mm (1.53 in) stellite faced exhaust valve and an intake valve that is 4 6 mm 1.81 in). Intake and exhaust valves with oversize steams are available in 0.09 mm (0.03 in) and 0.39 mm 0.153 in) oversize.
1. Remove the valve keys using the following procedure :
1.1. Compress the valve springs with the J8062.
1.2. Remove the valve keys.
1.3. Remove the J 8062.
2. Remove the following components :
• The caps from the in take valves
• The rotators from the exhaust valves
• The shields
• The O-rings
• The valve springs with the dampers and the shims
3. Remove the exhaust valve seals.
4. Remove the valves.
5. Place the valves in a rack and return the valves to the original positions during assembly.
6. Drive out the prechambers with a small nylon or brass drift inserted through the injection nozzle hole. The prechambers use high temperature super alloy materials. Replace the prechambers with the correct part number for this series of engine.
