How does a viscous fan work?
How Does a Viscous Fan Drive Work? In a viscous drive, the main shaft turns at RPM proportional to the engine speed, while the drive housing attached to the engine fan maintains a separate speed, set by the electronic engine control module. In other words: The fan clutch speed is independent from the engine’s RPM.
What is a viscous fan coupling?
Viscous fan couplings are located between the water pump pulley and the radiator. They: Control fan speeds to aid engine cooling. Aid in the efficiency of the engine by engaging the fan, when necessary. Reduce load on the engine.
Which way does a viscous fan undo?
All viscous fans undo in the same direction that they turn.
How do you replace a viscous fan bearing?
Remove the cir-clip. Put the flange including the LR tool back on, now support it with a piece of wood on the left (Counter Clockwise (CCW)) side of the engine bay and using different things, from wood, nuts, ratchet pipes, anything in your toolbox could do, to fill-up the space between flange and front cover.
How can I Keep my Fan bearing cold?
Get the shaft + bearing and keep it cold with some camping ice blocks. Heat-up the surroundings of the front cover where the bearing will go back-in, including the inside, with a mild flame for about 3-4 minutes, spreading the heat all of the time, so never too long at one spot.
How to wind off a fan pulley bearing?
To wind it off, hold the fan spanner and turn the shaft using the bar and hex tool CLOCKWISE as to undo the flange…Once it breaks the threadlock, wind it all the way of the shaft. This will reveal the bearing and more importantly the circlip which retains the bearing in the housing..
How long does it take for a fan bearing to go back in?
Heat-up the surroundings of the front cover where the bearing will go back-in, including the inside, with a mild flame for about 3-4 minutes, spreading the heat all of the time, so never too long at one spot.
https://www.youtube.com/watch?v=YurLot1k44s