The expansion tank on my TE630 is leaking. Not fast, but a steady drip. I took it out and filled with coolant to trace the leak and it is coming from this embedded fixing. Does anyone know how this is moulded into the expansion tank and if it's feasible to get it out and then epoxy back in to seal the leak? I'd also thought about using a sealing washer (dowty type), which would stop the leaking, but not actually fix the issue. Or see if a new expansion tank is available (my spares source here in the UK has been unavailable recently with the Coronavirus, so I don't know for now if this is available).
mine also has a leak from that hole but it doesn't bother me. the liquid level can easily remain below
I'd rather it didn't leak, so I drilled around the side of the insert with a 1.5 mm drill, cleaned it out and filled it with Devcon chemical metal. Cleaned the tank as well, it might be possible to see the level now.
