Fan solenoid question. (Attention @Heavyd )

2001 international 9200. Fan is running continually. The solenoid it seems to operate as it should but won’t release the clutch all the way. There are 3 lines.

1 is a feed line
1 is to the clutch
The last seems open to atmosphere?

I can’t blow air to the open one AND see where it’s

coming out? I am all alone at the shop and no one around.

many ideas?

I’m also losing air pressure quick until I flip the fan override to the “on” position. Then no more air loss.

it only leaks air while running so I can’t hear where.

I guess my question is what dose the 3 rd hose do? I believe it is orange?

Is it possible the solenoid is leaking some pressure to the clutch and causing it to engage partially and leak at the hub? Then when I energize with the switch it doesn’t leak because it’s full air pressure?

@Heavyd

 

Hub was new last year. I pressure it with shop air and it works as it should. I don’t hear any leaks like I did when the last hub went out.

When the truck starts there is pressure to the fan hub but it’s like it’s not enough to fully disengage the clutch.

 

Thanks guys.

conclusion is that the fan hub doesn’t release and leaks with truck air. It dose release and doesn’t leak with shop air.

I figured this out by artificially energizing the solenoid while the truck was off.

the hub is 14 months old. Kit master. 24 months warranty they say but I’m skeptical. Won’t be here till Friday.