The key reason for premature spring-engaged fan clutch failures is LACK OF TORQUE. There are fan blades in operation today that require more torque than current fan clutches can produce.
Our GoldTop fan clutches pack over 5,000 inch-lbs of torque. Enough to handle nearly any size fan blade.
Kit Masters’ patented Auto Lock feature will AUTOMATICALLY LOCK UP fan clutches when the friction material nears the end of its life, allowing the vehicle to finish its trip.
Repair or replace the fan clutch in your shop, at your convenience. No outside labor costs or tow bills.
Nobody knows how to rebuild a fan clutch like Kit Masters technicians. They tear down and rebuild thousands of fan clutches every year. These years of experience and our ‘better than OEM’ quality standards ensure that your professionally rebuilt fan clutch operates well beyond the 3-year/300,000 mile warranty.
Western Star / Mercedes MBE4000
98A9859, 999859, 99a9859, 989859, KMN2099859, KM N20 99859, ABPN2099859, ABP N20 99859, FLT99859, KMI99859, 3443-99859,
In order for a GoldTop fan clutch to operate properly, there must be between 90 – 120 psi of air pressure going into the fan clutch. This means the air pressure must be tested at the end of the air line, where it connects to the fan clutch. The compressor\’s pressure gauge does not accurately show how much air pressure is actually entering the fan clutch.
First, check your air pressure right at the entry point of your fan clutch. You need a minimum of 90 psi, right at the entry point of your fan clutch, in order for it to operate correctly.
If you have more than 90 psi, right at the entry point of your fan clutch, and your fan clutch still won’t disengage, the Auto Lock feature on your fan clutch has kicked in.
If you have more than 90 psi, right at the entry point of your fan clutch, and your fan clutch still won’t disengage, the Auto Lock feature on your fan clutch has kicked in. When your friction material nears the end of its life, the Auto Lock feature fully engages your fan clutch to help you get to a service shop to get your fan clutch maintained, instead of leaving you stranded on the side of the road. Your fan clutch needs to be rebuilt or replaced.
When your fan clutch won’t engage, this usually means that your GoldTop is out of friction. To test this, shut off your truck and try to spin your fan blade. If you can spin your fan blade, then you have no friction left and your fan clutch assembly needs to be rebuilt or replaced. If your fan blade does not spin, your fan clutch is properly engaged. GoldTop fan clutches engage when there is no air reaching the fan clutch.
California Residents: Prop 65 Warning
You are purchasing a Kysor-style fan clutch. When replacing a Kysor-style fan clutch, you must always replace the hub (pulley) bearings at the same time. Failure to do so will void the warranty on your fan clutch.
To determine the required bearing kit for your hub, enter the hub part number in the search field below, find the part number of the bearing kit you need on the dropdown below, or click on the 'Learn More' link below.
I don't want to purchase a hub bearing kit at this time.
Failure to install new hub bearings with your clutch will void your warranty.
This product includes a core charge. You may pre-pay for the freight to return your core during the checkout process, or ship using your own method. Core returns must be received by Kit Masters within 30 days of purchase.
Would you like to pre-pay for the return freight?
