Exclusively from Kit Masters
A true FAIL-SAFE design
to get you home every time.
Spring-engaged fan clutches are designed to fail in the
engaged position in the case of a system air failure. But what
happens when you run out of friction material? The fan clutch
fails in the disengaged position.
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.
See back side of flyer for more details on how this works
Auto Lock is now available on:
• GoldTop rebuild kits
Kit part numbers: 14-256 • 14-256-1 • 14-200
• GoldTop 2-Speed rebuild kits
Kit part numbers: 24-256 • 24-256-1 • 24-200
• GoldTop Remanufactured Fan Clutches
• K-Series Remanufactured Fan Clutches
Part numbers: 8801X • 8805X
www.KitMasters.com • 800-810-9110 • 825 1st St. NE, Perham, MN 56573
DISENGAGED - Fan not spinning
Air Chamber
= Auto Lock Seal
All fan clutches can be thought of as two components:
Auto Lock Seal
One component that independently rotates with the fan
– called the driven portion.
Friction Material
One component that rotates with the pulley
– called the drive portion.
Friction material is often used to couple the two portions
together so that they spin in an engaged state.
In a spring-engaged fan clutch, spring
pressure forces the drive and driven portions
together to engage the fan clutch.
A specific internal air volume is required to
hold back the spring to keep the fan clutch
disengaged.
Air Supply to
Clutch
= Auto Lock Seal
ENGAGED - Fan spinning
When the air supply is removed from the
fan clutch, the internal spring forces the
friction material to engage with the drive
portion of the fan clutch, and the fan clutch
is engaged.
= Auto Lock Seal
AUTO LOCK ENGAGED - Fan spinning
Worn
Friction Material
As the friction material wears, the driven
portion moves closer to the drive portion
until it makes contact with the Auto Lock
seal. When this happens, the air chamber
is restricted and the fan clutch can no
longer receive enough air to overcome the
spring pressure to disengage it. It remains
engaged, allowing the driver to make it to
a repair facility of their choice.