DriveMaster Super Kit
Install a Super Kit if the bearings are running rough or if the DriveMaster Fan Drive needs to be completely rebuilt
due to excessive wear. The Super Kit consists of the parts listed and described below:
Spring Housing/Piston Assembly (#50): The spring housing/piston assembly is the internal mechanism that
engages and disengages the DriveMaster fan drive when air pressure is either removed or applied.
Fan Mounting Disc (#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.
Check the fan mounting disc for blistering or damage.
Friction Liner (#28): The friction liner is attached to the sheave on top of the spring housing assembly.
Sheave Bearings (#2): Use a 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 (see sheave illustration Step 2A on page 14). If there are spacers in 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): The bearing nut is used to hold the sheave onto the journal shaft.
Air Chamber Seal (#18)
O-Ring (#6)
Air Cartridge (#23)
Face Seal (#20)
Retaining Rings (#22, #24)
Button Head Screws (#17)
Cage Nut (#55)
T55 Torx Plus Bit (not pictured)
O-Ring Lubricant (not pictured)
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