Fan clutch bleeding

[badgerord]

I have read all the pages of the manual that cover steering system bleeding covering the turn the wheels, front lifted etc...

What I can't find is what do we do with the fan clutch itself?

It is a dead end loop in the system, if I plumb it in (with air in it) and add the hose from the Caddy valve. What bleeds the air out?

Marty

 

[ken]

If there is air in the line to the fan clutch It will compress and activate/deactivate the clutch normally. You can crack the line at the clutch and start the engine until the fluid sprays out it you like. (Normally about a second of run time before fluid sprays everywhere.) But it should work just fine with the air.

 

[rcamacho]

Old thread I know.
That said, just saw this bleed 🩸 fitting off the CV on my 1151. I don’t recall seeing one on my 998 before.

 

[Mogman]

There is no need to bleed the fan system, the "bleeder" on the later trucks would not effectively bleed the system anyway being located at the valve.
To be effective as a bleeder it would have to be located at the clutch.
I think that was put there to make it convenient to attach a gauge to monitor the pressure.

 

[Coug]

agreed; it's a dead end system, and as long as it has pressure that's all it cares about. The air will compress, and eventually it will bleed itself given enough cycles.

 

[mgFray]

There is no need to bleed the fan system, the "bleeder" on the later trucks would not effectively bleed the system anyway being located at the valve.
To be effective as a bleeder it would have to be located at the clutch.
I think that was put there to make it convenient to attach a gauge to monitor the pressure.

I never figured that it was a 'bleeder', but instead a diagnostic port to verify fluid was infact going to the clutch. On my M998, when I redid the caddilac valve and tubing, I added the 'T' and bleeder specifically so in the future I could verify things were working as expected, not because I thought removing air was necessary.