Symptoms
Temperature climbs in traffic or on slow trails, or the fan freewheels easily with a hot engine (or roars all the time).
The fix, step by step
- With the engine cold, check the fan for wobble and how it resists turning.
- Hold the pulley and undo the fan clutch from its hub, fit the new clutch and refit the shroud.
- G-luxe Travel's 'How I won the battle with my viscous fan' covers the G 500 job.
Tools & part numbers
- Fan-clutch holding tool and wrench
- replacement viscous coupling
- video: G-luxe Travel
Where to buy the parts
Fan clutch 113 200 01 22 (Sachs)FCP Euro ↗Amazon ↗
Fan clutch wrench (Baum)FCP Euro ↗Amazon ↗
Hunting a used or discontinued part? Search eBay Motors for Mercedes-Benz G-Class W463 parts →
Rated for a competent home mechanic with a decent tool kit. Confirm torque figures, fluids and procedures against the factory service manual for your VIN, support the truck on stands rather than a jack, and work at your own risk (disclaimer). Some parts links are affiliate links, which pay us a small commission at no cost to you.