YBC Offroad
Member
- 38
- 2
- 8
- Location
- Cologne, MN
So I noticed the fan is always locked in on my m925a2. I saw it wasn't normal. I also noticed the truck had like a knocking sound at idle. Like a metal on metal smacking sound. Took the serpentine belt off and it is quiet as can be. So I investigated further into the clutch as I think it is making the noise. So I took the air supply line off of the shutter valve. I spun the fan. It was locked in and spinning the entire hub. (Keep in mind belt is off). I put shop air to the air supply line and heard the faintest clunk sound from the clutch. I didnt see it move. Went to spin the fan and it spun separate from the hub. So now the fan is free wheeling. Disconnected the shop air and it still free spins. Seems like the clutch is locked up? It doesn't seem to be moving at all. Any ideas?