DriveMaster® - Lesson 5: DriveMaster Parts and Repair Kits, © 2001 Horton, Inc.

LESSON 5: DRIVEMASTER PARTS AND REPAIR KITS

5.2.3 DriveMaster PolarExtreme Super Kit

INDEX

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Install a DriveMaster PolarExtreme Super Kit if the bearings are running rough or if the DriveMaster fan drive needs to be completely rebuilt due to excessive wear. If you need more power, the PolarExtreme kit also contains and ultra high-torque clutch package that delivers 2400 inch-pounds of torque. The kit consists of the parts listed and described below:

Learning Objectives:
• Describe when a DriveMaster PolarExtreme Super Kit would be used.

Sheave Bearings (#2): Use the bearing press to remove old bearings and install new bearings into the center of the sheave. The bearings are prelubricated and sealed. They also contain markings that need to be aligned for proper installation. (If there are spacers between the old bearings that were removed, reuse those spacers by positioning them between the new bearings before installation. DO NOT remove the seals and attempt to lubricate the old or new bearings.)

Bearing Nut (#4) Used to hold the sheave onto the journal bracket shaft.

O-Ring Seal (#6)

Fan Mounting Disc/Studs(#9): The fan mounting disc is the part that the fan is bolted on to. It is also the part that contacts the friction liner when the fan drive is engaged. The fan mounting disc is screwed onto the jack bolt.

Button Head Screws (#17)

Air Chamber Seal (#18)

Face Seal (#20)

Retaining Ring (#22)

Air Cartridge Assembly (#23)

Retaining Ring (#24)

Friction Liner (#28): Attached to the sheave on top of the spring housing / piston assembly.

Spring Housing / Piston Assembly (#50): The internal mechanism that engages and disengages the DriveMaster fan drive when air pressure is either removed or applied.

Cage Nut (#55)

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