Borg Warner Viscous Fan Drive
s2 m 20.03.003
Note: The Borg Warner viscous fan drive does not require any maintenance. If the fan drive is damaged, replace the unit. Do not attempt to repair it.
Notice: If the fan drive assembly is damaged, replace the unit as soon as possible. Operating a seized or otherwise damaged clutch reduces fuel economy, and could cause serious engine damage.
See of the S2 Chassis Workshop Manual for replacement instructions.
- With the engine shut down, rotate the fan at least one full turn by hand. It should have a smooth, steady drag. If it does not, replace the fan clutch.
- Check for physical damage to the fan or fan shroud.
- Check for correct drive belt alignment and tension. For specifications, see of the S2 Chassis Workshop Manual .
- Check for wear of the fan clutch bearings. There should be no side-to-side or in-and-out movement of the fan clutch.
- Do all of the checks in of the S2 Chassis Workshop Manual .
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