Thanks. I did only see shavings on the inlet side of the dryer, nothing visible on the outlet side. Do I just pull the line at the firewall and look? Or should I remove the expansion valve itself and look?
The route is compressor to condenser, to dryer, to expansion valve (with the evaporator), to evaporator, back to compressor. The expansion valve is part of the evaporator assembly under the glovebox.
Should I use compressed air to blow out the lines from compressor to condenser, condenser to dryer, and dryer to firewall (assuming I see no more shavings beyond that point)?