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5/8 Clutch Bearing Upgrade
Installing your new 5/8 clutch bearing is no harder than
replacing
the original bearing assembly. The order of parts on the shaft is
the same for both Currie and Lashout drives.
1) Use a 6mm Allen wrench to remove the three bolts holding the
motor to the gear
housing of the drive system. Pull the motor straight out from
the housing. Note the flat
spot on the motor shaft. When re-installing the motor, be sure this flat spot is aligned
with the flat spot in
the gear at the center of the drive.
Remove the aluminum "gasket"
from between the motor and housing. (see
below)
NOTE: The aluminum "gasket" is ONLY required
when installing the "silver can"
motor shown in the picture below. All other motors (BMC, MAC, Kollmorgen)
must be installed WITHOUT this "gasket".
2) Remove the four screws holding the planetary gear set in place. (below)
3) Lift out the planetary gear and set aside. (below)
4) Locate and remove retaining clip on the chain master link. Remove chain. (below)
5) Remove the splined shaft, sprocket, and all spacers from the
housing. Install the
new 5/8" drive unit with shaft, sprocket, and spacers as
shown in the diagram
below.
NOTE: Your 5/8" kit parts have been pre-lubricated
with "Tri-Flow Synthetic
Grease with Teflon." You can buy this product at any decent bike shop. Do
NOT
use oil on any of the internal parts of the drive! Do NOT flush out the housing
with
solvents once assembled!
6) Be
sure the splined
(grooved) end of the shaft, Nylon spacer, sprocket, and steel
spacer are in the
exact order shown
above! NOTE that the pinion sprocket "teeth" are
positioned away from the splined portion of the shaft.
7) Insert the new pinion sprocket assembly back into the housing
making sure the steel
spacer remains
on the drive shaft! (it can fall of and lodge under the pinion if you're
not
careful)
8) Do NOT install the chain yet, since it
will installed last. Re-assemble the rest of the
drive unit in the same
order it was disassembled.
9) Install the chain.
HINT: The chain can be
fed through the opening on the side of the drive assembly
AFTER the drive unit
is fully assembled. Feed one end of the chain into the opening
adjacent to the
pinion gear. By turning the gear with your finger, the chain will be dragged
around the sprocket and exit the housing.