Ending 'Belt Squeal' From the 6.0L Power Stroke's Water Pump Pulley
When you’re installing a Bullet Proof Diesel fan clutch adapter on your engine, you might find a glaze has formed on the water pump pulley over time. The image below shows a pump pulley with dark rings around its base; this is glaze buildup. Our technicians have found this glaze can cause slippage and squealing under heavy fan demand conditions, so it’s important to strip the glaze off for optimal performance.

Removing the glaze is as simple as scuffing up the pulley along the area where the belt rides. We’ve used a sanding disc for our example, but you could apply a heavy grit sandpaper or emery cloth by hand to get the job done if you don’t have a generator handy.

In the image above, you can see our tech is scuffing away the glaze in concentric circles. He’s also applying even, moderate force on the pulley. This assures he won’t grind the metal unevenly or take away too much of the surface with his sanding disc. You can see the finished result below: a pump pulley with a cleaned up base, right where the belt rides.

Installing a fan clutch adapter is a smooth process with the right tools, and you’ll get the most out of your water pump pulley with these small adjustments. Follow these simple fan clutch adapter installation tips from our technicians to get the best performance out of your adapter. Questions or concerns? Leave us a comment below and we’ll help any way we can. - Or be in contact at 888-967-6653 or customerservice@bulletproofdiesel.com