911 Carrera Coupe F6-3164cc 3.2L (1984)
Piston: Service and Repair
Piston Cooling Spray Valve
Checking
CHECKING PISTON COOLING SPRAY VALVE
Right crankcase section looking forward in car.
Insert suitable plug (12 mm dia.) in bore for anchorage bolt.
Inject methylated spirits into oil feed bore for main bearing seat.
Apply air pressure in oil feed bore for main bearings and observe ejection pattern of spray valve.
Left crankcase section looking forward in car.
Apply air pressure in bores (arrows) on bearing seat and observe ejection pattern.
Cementing
CEMENTING PISTON COOLING SPRAY VALVE
Clean take-up bore for spray valve thoroughly and cement in a new spray valve with Loctite No.640.