Repair Kits; Drivemaster Seal Kit - Horton DRIVEMASTER Instrucciones De Instalación

Repair Kits

Horton offers several different ways to repair or rebuild your DriveMaster Fan Drive. If you've purchased a
PolarExtreme repair kit for applications requiring even greater torque, the repair procedures will be the same
as the standard repair kits.

DriveMaster Seal Kit

Install a Seal Kit if an air leak has developed inside of the DriveMaster Fan Drive. The Seal Kit consists of the
parts listed and described below:
Air Chamber Seal (#18): The air chamber seal forms an air seal between the air chamber and the spring housing/
piston assembly. The air chamber seal goes around the bottom half of the spring housing/piston assembly.
O-Ring (#6): The o-ring forms an air seal between the air chamber and the air chamber cap.
Air Cartridge (#23): The air cartridge fits inside the Journal shaft. Air pressure comes up through the center of
the shaft, into and through the air cartridge, and into the air chamber. The cartridge has a spring loaded carbon
tip that presses against the face seal and forms an air tight seal while the fan drive is spinning.
Face Seal (#20): The face seal screws into the center of the air cap and forms an air seal with the carbon tip
of the air cartridge.
Retaining Rings (#22, #24): There are two retaining rings in the seal kit. The smaller retaining ring is used to
hold the air cartridge inside the journal shaft. When installing this retaining ring, the beveled side must be facing
the air cartridge. The larger retaining ring is used to hold the air cap in place.
Button Head Screws (#17): The torx button head screws are used to attach the friction liner and the spring
housing to the sheave. Alternately and evenly tighten the screws to 80 in lbs torgue.
Cage Nut (#55): The cage nut is used to keep the spring housing/piston assembly together when removing from
the sheave. It maintains pressure on internal springs after the button head screws are removed.
T55 Torx Plus Bit (not pictured): The T55 torx plus bit is used to help remove the fan mounting disc from the
jack bolt.
O-Ring Lubricant (not pictured): Apply lubricant to the new air chamber cap o-ring and the air chamber seal
before installation.
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