Fan clutch?

[Waterloo]

I had the same issue after the truck sat, hammering did nothing, building up air pressure did nothing... So, I went and found some 1/4" airline, same size that powers the clutch, put a push pull fitting on one end, and a male shop air fitting on the other end, FleetPride hooked me up, to fit my little Lowes 90 psi air compressor. I hooked it up at the solenoid by the fire wall and gave her a shot, worked like a champ. If I remember correctly I did not even have the motor running when I did this, I think it popped and I fired up the motor, no more sticky fan clutch. Anyways, it did work, and building the part was inexpensive vs a new fan clutch.