How to Put Together EGT Probe Thermocouple Compression Fittings

How is the EGT Probe Thermocouple Compression Fitting put together?

Answer:
Start with the compression fitting body placed on a table vertically with the large NPT thread down. Insert the compression ferrule in to the compression fitting body with the conical side down into the small thread there is a matching mating surface. This creates a perpendicular surface (flat) at the top of the compression fitting. Then the smaller shouldered washer is laid on top with the conical side pointed up. The ferrule cap is next and is screwed on to the top thread until just snug this creates a mechanical condition that is loose enough to let the ferrules move around when the probe is inserted into the cap self-aligning them allowing the probe to fit through. This cap should be tightened enough when installed to keep the probe from leaking. Do not over tighten the ferrule cap! You will destroy the ferrules and the probe body creating a leaking condition. Please talk to your mechanic they will know the proper torque for the ferrule cap.

Suggestion: Use an anti-seizing compound on the NPT thread that is threaded into the exhaust manifold. This will make disassembly much easier in the future.